- San Diego State University
Contents
1. Introduction 1 INSTALLATION Map Screen Launch New Map Add Layer to Map Adding A XY Layer to the map USER MANUAL OF Creating new Hot Spots GLOBAL WARMING INFORMATION TOOL Adding Pictures to Hot Spots MAP BASED TEACHING TOOL Custom Web Page Print the Map Help Menu Image Paths Figure 5 12 User Manual 5 4 CUSTOM WEB PAGE This section describes the custom web page made for this project This page gives detailed information on global warming climate shift etc as shown in Figure 5 13 This was developed using XHTML CSS and Java script The web page contains the following links e Global Warming Info contains various links on global warming and its affects all over the world e Controversies contains links to some of the controversial theories surrounding global warming e Play Games contains links to some very informative online games regarding global warming e Videos contains links to online videos related to global warming e Quiz Time contains links to various online quizzes Students can take the quiz to check and enhance their information on global warming e How to use GWIT this links to the user manual page 33 GWIT GLOBAL WARMING GWIT Global Warming Info Tool An Audio Visual Map based Tool for Teaching Provides information about Global Warming and variety of topics related to it Uses interactive maps audio and visual to facilitate quic2. Figure 5 8 Add Pic Dialog Box 30 Some Facts about this place Comparison of photographs taken in 1948 50 to those taken in 1999 2000 of the area between the Brooks Range and the Arctic coast show an increase in shrub abundance in tundra areas and an increase in the extent and density of spruce forest along the treeline The increased vegetation growth is attributed to increasing air temperatures in Alaska on average 1 8 F 1 C per decade over the last three decades Reference Alaska Regional Assessment Group 1999 Preparing for a changing climate The potential consequences of climate variability and change Alaska Center for Global Change md Arctic System Research University of Alaska Fairbanks a 4K Stem MC Racing and K Tana 2001 Incraosina shruh Figure 5 9 Information Dialog The text can also be converted into audio form by clicking the Listen button which converts the text to speech using the Java speech API 5 3 3 4 HELP MENU One requirement of this project was to build a detailed help menu that will make the tool easy to learn and use for the students of the high schools This is accomplished in two parts A detailed web based user manual is created which is discussed in the next section Also a help menu is integrated into the map screen which gives information on all the tools available to the user The help menu and help dialog are shown in Figures 5 10 and 5 11 Welcom
3. Figure 4 4 Class Diagram for XY Feature Layer Separated Value CSV files which are represented by the FileBean class CSVFileHandler is the class which reads and updates the CSV files represented as FileBeans The class diagram for the hotlink identify functionality is depicted in Figure 4 5 The Hotlmage class extends the javax swing JDialog class This represents the dialog that opens up when the user clicks on any hotspot on the map The information 1s read from the FileBean representing the CSV file using the CSVFileHandler object The classes used to implement the AddPic tool are shown in Figure 4 6 The AddPic tool changes the cursor icon and allows the user to click on any hotspot over the map in edit mode The AddImageDialog class extends the javax swing JDialog class This allows the user to browse to any image that needs to be added to the clicked hotspot The CSV file 19 B Hotlink Attributes Operations public Hotlink GloballnfoMap o E Hotimage package Image image package String bluggee Attributes package String fileName package ArrayList rows package File csv package String opt package double ab Figure 4 5 Class Diagram for Hotlink Identify tool package String file package String desc package String nm package JButton ok new JButton OK package JButton cancel new JButton Cancel package JButton browseFileBT new JButton Browse package JTe
4. FEATURES This chapter focuses on the implementation of the project development environment used and the various features implemented 5 1 DEVELOPMENT ENVIRONMENT NetBeans 15 was used as the integrated development environment IDE to develop this project The reasons to choose NetBeans as the development platform were as follows NetBeans is one of the largest development IDE s available for building Java based applications It provides support for building standalone desktop based as well as web based applications Integrated support to develop GUI based java swing applications Swing Application Framework was used as the framework to develop this GUI based application NetBeans already comes integrated with this framework and can be used easily to create desktop based applications Easy integration with Map Objects Java Edition MOJO MOJO is the GIS component architecture provided by ESRI that was used to provide GIS support in this project NetBeans was easily integrated with MOJO libraries which further enhanced the development capabilities Inbuilt profiling tools in NetBeans help to monitor the applications for memory leaks optimizations etc This proved to be really helpful during the development of this project NetBeans provides great drag and drop features for GUI development which was a major part of this project Complex swing based designs can be easily accomplished using this feature without having to bother abo
5. distributed highly scalable reliable secure and have as few implementation and system dependencies as possible Java is currently one of the most popular programming languages due to its wide range of use in application based software desktop based applications and distributed web applications 10 Few of the features and advantages of Java are captured below e Object Oriented programming support Java is an object oriented programming language All the code written in Java is written in the form of classes This helps developers to write re usable modules and components Existing classes can be easily reused adding additional features as and when required Concepts like inheritance encapsulation abstraction and polymorphism all make Java a strong object oriented programming language 8 Due to this feature most of the classes built as part of this project are reusable and can be easily extended by other GIS applications in future e Architecture Neutral Java is an architecture neutral language 8 Not only is it platform independent but 1t works on wide variety of hardware architectures and operating systems The Java compiler generates a set of byte code instructions that are platform operating system hardware independent 8 This byte code can be interpreted on any system by the Java Virtual Machine JVM Platform independency was a big requirement for this thesis project e Java is easy to learn and use This makes java code easi
6. en wikipedia org wiki Swing_Application_Framework accessed September 2010 n d WORKS CONSULTED Climategate Conservapedia http www conservapedia com Climategate accessed September 2010 n d Climate Research Unit email controversy Wikipedia http en wikipedia org wiki Climatic_ Research_Unit_email_controversy accessed September 2010 n d Global cooling Wikipedia http en wikipedia org wiki Global_cooling accessed September 2010 n d Global warming articles Science Daily http www sciencedaily com articles earth_ climate global_warming accessed September 2010 n d Global warming Early warning signs Union of Concerned Scientists http www climate hotmap org accessed September 2010 n d Global warming Wikipedia http en wikipedia org wiki Global_warming accessed September 2010 n d United States Environmental Protection Agency Climate change http epa gov climatechange kids index html accessed September 2010 n d
7. nameOfPlace public ArrayList getFileNames return fileNames public void setFileNames ArrayList fileNames this fileNames fileNames public ArrayList getFileDesc E return fileDesc public int getLineNum return lineNum public void setLineNum int lineNum this lineNum lineNum 5 3 3 2 ADD PIC TOOL This tool implements the functionality of dynamically adding pictures and description to the hotspots on the map Clicking on this tool changes the cursor icon This is shown in Figure 5 7 Clicking on the hotspot opens up a dialog box as shown in Figure 5 8 The users can browse to the desired image and add description related to it The Add Pic Tool dynamically updates the CSV file which contains the hotspot A copy is made of the original image and stored in the project folder 5 3 3 3 CUSTOM IDENTIFY ICON The custom identify icon allows user to click on any hotspot and obtain more information regarding it On clicking this tool the cursor changes to the identify cursor and the user can then click on any hotspot Clicking the hotspot results in an information dialog as shown in Figure 5 9 This dialog contains images and descriptions regarding the hotspot as specified in the CSV file Figure 5 7 Add Pic Tool LE Add Image to Point Selectthe Image and enter some description File Path caucasus jpg re vese eneimasenesamnd ox cm
8. user the ability to clear any selected tools Allows user to go back to the original cursor icon and deselects any selected tools Also clears the lines created on the map by the Measure tool Measure Allows the user to measure distance between any two points on the map A line can be drawn between any two points on the map by dragging the cursor after clicking this tool The distance is displayed both in kilometers and miles near the foot of the map Add Layer Allows the user to add map layers on the map in the form of shape files Opens up a dialog box using which the user can browse to the desired shape file Any number of layers can be added at a time on the map XY tool This is a custom tool to add XY Feature Layers on the map as shown in Users can load custom layers on the map using this feature Identify This is a custom identify icon This allows the users to interact with the hotspots on the map to gain information regarding them Help Menu This opens up a help menu dialog box Gives sufficient help on all the toolbars available to the user Add Pic Tool Allows users to dynamically add new pictures and descriptions to existing hotspots on the map Source 4 Advantages of Java IBM http publib boulder ibm com infocenter aix v6r1 index jsp topic com ibm aix prftungd doc prftungd advantages_java htm accessed September 2010 n d 5 3 3 1 XY LAYER AND HOTSPOTS A hotspot is de
9. ED QUEUE UPDATED QUEUE_EMPTY QUEUE NOT EMPTY QUEUE EMPTIED ENGINE RESUMED ENGINE PAUSED Figure 2 4 State diagram for a speech synthesizer Source 17 Speech Synthesis Java Speech API Programmer s Guide Sun Microsystems Inc http java sun com products java media speech forDevelopers jsapi guide Synthesis html accessed September 2010 n d This project utilizes the features provided by JSAPI to incorporate text to speech support JSAPI allows developers to integrate speech technology with any java based desktop or web start application The API provides a cross platform interface to speech synthesizers 12 10 This project uses an open source third party implementation of the speech synthesizer available on Sun s website with the name FreeTTS 1 2 6 This is a speech synthesis system written entirely in Java language and utilizes the javax speech API provided by Sun itself 11 CHAPTER 3 REOUIREMENT SPECIFICATION This chapter focuses on the reguirement gathering phase All the reguirements gathered from the end users are explained in this chapter One of the most important phases of software development is reguirement gathering This phase occurs during the beginning of any project that is being developed for a customer During this phase all the requirements are gathered from the customer and analyzed in detail The requirements are mainly analyzed from a feasibility
10. GLOBAL WARMING INFORMATION TOOL A MAPBASED TEACHING AID A Thesis Presented to the Faculty of San Diego State University In Partial Fulfillment of the Reguirements for the Degree Master of Science in Computer Science by Gaurav Mathur Fall 2010 SAN DIEGO STATE UNIVERSITY The Undersigned Faculty Committee Approves the Thesis of Gaurav Mathur Global Warming Information Tool A Map Based Teaching Aid Carl Eckberg Chfir Department of Computer Science Department of Computer Science edo Piotr Jankowski Department of Geography Approval Date Copyright O 2010 by Gaurav Mathur All Rights Reserved 111 DEDICATION I would like to dedicate this thesis to all my family members who have always encouraged and supported me Thank you for everything 1v ABSTRACT OF THE THESIS Global Warming Information Tool A Map Based Teaching Aid by Gaurav Mathur Master of Science in Computer Science San Diego State University 2010 In today s computer age the focus of high school teachers is slowly shifting to more interactive teaching methodologies as opposed to a typical lecture format Computer aided teaching enables teachers to engage the students to the subject material in a more successful manner and also increases kid s desire and motivation to learn One challenge faced by some teachers is the need of interactive teaching software that is easily customizable config
11. ND FUTURE ENHANCEMENTS nee 37 BIBLIOGRAPHY osa 39 viii LIST OF TABLES Table LE Custom I k00 KAE EEEE E dida E 26 1X LIST OF FIGURES PAGE Figure 1 1 Concept Oof hotS pota ii Aed ails das 2 Figure 2 2 Application and ApplicationContext class interaction 6 Figure 2 3 JSR 296 architecture Application and ApplicationContext singletons 7 Figure 2 4 State diagram for a speech synthesizer ss 9 Ergure 3 1 Profeco e e LE St 11 Figure 4 1 High Level Architecture diagram ii vallal i ait aaa 15 Figure 4 2 Class diagram for application level component oooocnoocccnoccccnonanononccononcnonanacinnnccnns 16 Figure 4 3 Global Info Map Class fe mur ds 17 Figure 4 4 Class Diagram for XY Feature Layer iii ii dat BAe 18 Figure 4 5 Class Diagram for Hotlink Identify too 19 Figure 4 6 Class Diagram for Add Pic tooLuciuninon ici is 19 Figure 4 7 Class Diagram for Helper Classes ii da 20 Figure SL POO Dats snm a a Muid di us 23 Figure 5 2 700m Pan Tool BAN id 24 Fig re 5 3 Selection TOAL Baltic 25 Figure 5 4 Custom Toolbar asii iptables 26 Figures CSV File Formats toie ieu a A a ae 27 Figure 5 6 A Sample CSV Pl al Re 27 Figur 5 7 Add PIC TOGO iaa li lia 29 Fistire gt Add Pic Dialog Bo o dia a 29 Preure 5 9 Information AA A aa 30 figure 310 He MEU AA A IE t 31 Figure S LL Help Dialog a DE ne E tent Io 31 Figure 3 12 User Mantal viii is 32 Figure 5 13
12. Tool An Audio Visual Map based Tool for Teaching cames Figure 6 5 Games page Contains links to some very informative links on the internet 37 CHAPTER 7 CONCLUSION AND FUTURE ENHANCEMENTS This thesis project has been developed in accordance to the reguirements collected at the beginning of the project as described in chapter three of this report All the requirements have been fulfilled to a large extent The major focus from a development point of view has been reusability of code extendibility of the underlying architecture and ease of use for the end users These objectives and how they were achieved in this project are discussed below Easily customizable and configurable This application meets this criterion and the users can easily configure and customize the tool The teachers can prepare various study units and use this tool to teach them Easily deployable This application has an executable JAR file This makes the tool easily deployable and executable by simply double clicking the JAR file Extendable The various functionalities implemented are in the form of reusable java classes Other similar applications in future can reuse these classes and extend the functionality Platform and Browser independence This application is system and platform independent and has been tested on a variety of operating systems like Windows 7 Windows XP Windows Vista and Mac OS The webpage incl
13. WebPage for th project A sia ne 33 Eigure 6 1 Home screen of GWI nan se tii iii 34 Figure 6 2 World map VW ii ras 35 Figure 6 3 New map view This is initially blank and can be customized by the user Add Pic tool is activated in this VIE Wes ta 35 Figure 6 4 Video page Contains links to online videos regarding global SM AU TINUED Deets aed alee RAE O EE 36 Figure 6 5 Games page Contains links to some very informative links on the A aleaveaiaaseaseassaeeinsaunse 36 xi ACKNOWLEDGEMENTS I would like to thank Dr Carl Eckberg for his support and help during this thesis I would also like to thank Professor Tao Xie and Dr Piotr Jankowski for being a part of my thesis committee I would also like to thank Ms Debra Byrd Science Teacher at Helix Charter High School for her support and suggestions during the project CHAPTER 1 INTRODUCTION 1 1 BACKGROUND AND MOTIVATION In modern times keeping high school students interested in the course material is one challenge faced by many teachers Students get bored easily reading course books and usually loose motivation In today s computer age focus is slowly shifting to more interactive methodologies of teaching students in high schools as opposed to typical lecture formats Computer aided teaching helps in engaging the students to the subject material and also increases their motivation and desire to learn One challenge faced by some high school teachers is the need of an int
14. ability to zoom out of any previously zoomed in state e Pan This gives user the ability to drag the map in any direction required This helps in uncovering areas on the map that were earlier not visible e Pan One Direction This is an abstract form of the pan tool Gives user a set of options to pan the map in a particular direction e Identify This is the information tool Clicking this changes the cursor to an identify icon The users can now click on any area of the map to get more information about it 5 3 2 Selection Tool Bar This toolbar gives user the ability to select features on the map write spatial queries search places on the map etc Figure 5 3 shows the various tools available in the Selection Pan Tool Bar Most of these tools are disabled or grayed out initially A map layer needs to 25 Buffer Select Featu res 7 Attributes Find Query Builder Clear All Selection Figure 5 3 Selection Tool Bar be selected to enable these tools The usage of each tool as learnt from 4 is summarized below Swing Find Allows user to search information related to the selected layer The user can Zoom or Pan to the results returned easily This is extremely useful in locating places on a map Query Builder Allows user to write queries related to various fields like names area in a region etc The results returns can be easily highlighted on the map Sele
15. all the components will be designed and programmed according to this HLA Any non functional reguirements like scalability have to be addressed at this stage of development 7 The HLA for this thesis project is shown in Figure 4 1 The architecture is broken down into the following high level components 1 Application Lifecycle Component This component defines the application lifecycle and its management It defines the framework that will be used to manage the steps like startup launch resource management and exit of the application The home screen is a part of this component as it acts as a central place to access rest of the application Application Level Component This layer defines two major components of this tool e Map Screen This defines the various map views that can be launched from the home screen The views available will be World North America South America Africa Asia Europe and a new blank map Each view will be launched with preloaded map layers and custom layers created for hotspots e Custom Web Page This defines the web component of this application and how the information will be provided in the form of online links games guizzes and videos regarding climate shift and global warming Map Components The Map Components shall consist of the various toolbars provided by Map Objects Java Edition and all the custom tools that will be created to help users interact with the maps to gain useful inform
16. aphic data allowing the users to interact with maps perform spatial queries and geometric operations on spatial information and customizing map views according to user requirements 5 Key features regarding MOJO as described in 4 14 that made it a perfect choice for this thesis project are summarized below e This gives users the ability to combine variety of data sources together in a single application This feature allows users to combine personal data sources with various data sources available on the internet to create custom map layers 14 e Map Objects Java edition provides users with a wide range of GIS capabilities to interact with the maps and spatial information related to it Few of the features include labeling maps creating custom point s layer zoom capabilities creating layers dynamically by selecting features on the map guerying spatial data statistical analysis panning multiple layers measuring distances etc 14 e Easy integration with IDE s Integrated Development Environments Map Objects can be easily integrated with any Java IDE NetBeans IDE was used for the development of this thesis project Map Objects library was easily imported in the NetBeans IDE e Dr Carl Eckberg s course on GIS and the book prepared by him on using Map Objects Java Edition 4 has been a major source of inspiration and motivation behind this project It provides all the programming help required to get started with devel
17. at is easy to learn and use by the students of high schools The user interface shall use attractive and informative images to capture the interests of the students The custom web page being designed for the project will have an attractive user interface and use large and attractive fonts The platform requirements are as follows 1 The tool shall be platform and operating system independent The major platforms it should be tested before delivery are Mac OS and Windows This tool shall be easily deployable and executable to facilitate ease of use for teachers and students 13 3 To make the tool platform and system independent the tool shall be developed in Java which is a platform independent technology Map Objects Java Edition provided by ESRI will be used in this project All the technologies used are described in detail in the chapter two of this report 14 CHAPTER 4 DESIGN AND ARCHITECTURE Any software is as efficient as its underlying design and architecture This chapter focuses on the higher level architecture and design of this thesis project 4 1 HIGH LEVEL ARCHITECTURE A high level design defines the various components of the software being developed A High Level Architecture diagram HLA tries to represent and analyze all the reguirements finalized in the previous phase and constructs an architecture that can fulfill all the requirements This is a very important step in the development cycle as
18. ation These components will be discussed in detail in later chapters 15 Application Lifecycle Component Application Level Components Map Components Figure 4 1 High Level Architecture diagram 4 Custom Helper Components This layer defines all the low lever helper components that will be developed They include integrating text to speech support into the Map Component collecting relevant data regarding global warming in the form of hotspots downloading all the required map files creating custom help menu user manual and creating a configuration file for the project 4 2 DESIGN OF THE PROJECT Once the architecture 1s in place and all the components have been identified the next phase is to design each component This consists of determining the functionality of each component relationship between them identifying any component dependencies and also identifying any inter component interactions Class Diagrams are often used to represent various parts of the application A class diagram is a basic building block of the application It helps in creating a conceptual and 16 visual model of the components defined by the architecture The classes represent the various real world objects the application is composed of This helps in defining the relationships and dependencies between the classes The class diagrams that were designed for this project are depicted in Figure 4 2 El Global WarminginfoTool App E Global War
19. ct Features Allows user to select any area on the map in the form of a rectangle line circle or a polygon The selected areas are highlighted on the map The user can now create a new layer out of this selection using the Create layer from Selection menu item Clear All Selection This helps in clearing any previous selections on the map that may have been created by the select tools Buffer Gives user the ability to create a buffer around any selected feature on the map The user can specify the buffer distance radius in miles Attributes Opens up the attribute table corresponding to the selected features on the map 5 3 3 Custom Tools Figure 5 4 depicts some of the custom tools created using the MOJO API and Java The main uses of these tools are summarized in Table 5 1 4 Some of these tools and their implementation will be discussed in detail later on in this chapter The implementation of few of these tools is learnt from 4 26 Arrow Add Layer identify 0 User Manual Add Pic Tool Print Measure XY Layer Help Figure 5 3 Custom Toolbar Table 4 1 Custom Tools Tool Function User Manual This launches an html web page that contains the user manual created for this tool Print Gives user the ability to print the map Currently both the table of contents and the map screen are printed Arrow Gives
20. d Java SE downloads Oracle http www oracle com technetwork java javase downloads index html accessed September 2010 n d Java programming language Wikipedia http en wikipedia org wiki Java_ programming_ language accessed September 2010 n d Java Speech API Introduction Java Speech API Programmer s Guide Sun Microsystems Inc http java sun com products java media speech forDevelopers jsapi guide Introduction html 7408 accessed September 2010 n d Java Speech API Oracle http java sun com products java media speech accessed September 2010 n d J O Conner Using the swing application framework Sun Java http java sun com developer technicalArticles javase swingapptr accessed September 2010 July 2007 Map Objects Java edition ESRI http www thaigis com Support document mo_java_bro pdf accessed September 2010 n d 40 15 NetBeans IDE for Java developers NetBeans http netbeans org downloads index html accessed September 2010 n d 16 Speech engine Java Speech API Programmer s Guide Sun Microsystems Inc http java sun com products java media speech forDevelopers jsapi guide SpeechEngine html accessed September 2010 n d 17 Speech Synthesis Java Speech API Programmer s Guide Sun Microsystems Inc http java sun com products java media speech forDevelopers jsapi guide Synthesis html accessed September 2010 n d 18 Swing application framework Wikipedia http
21. dio fashion also to further capture the interest of the students vi TABLE OF CONTENTS PAGE ABSTRACT alasid aul a a mda aial v LISTOR TABLES e doo viii LIST OF FIGURES 5 nn a ix ACKNOWLEDGEMENTS ennemie nn tt nantes aies xi CHAPTER L ANTRODUCTON criei iene aad ate aa aaa alamaa 1 1 1 Background and MOV AO sis in etes 1 AS E AAA le la ein a e a a s 1 A A SA E SMD DS STT 2 1 3 1 HOS POU ui ta 2 IE AE ER ae el cata lta DS aaa at ca ta ea ac ae 3 1 3 3 ES AUTE ot ad 3 1 4 About this Docus tt 4 2 gt TECHNOLOGY iris 5 A A a T T T a de 5 2 2 Swing Application Framework iii A aa 6 2 3 Map Objects JAVA Editio iia e ten E EE 7 24 Java Speech APT cin nn na en ka E rte 8 REQUIREMENT SPECIFICATION as 11 4 DESIGN AND ARCHITECTURE a aO n A aianei aa e 14 4 1 High Level Architecture suscitaron tsn nn ia 14 AD D sisw of h PO aaa E Ran 15 5 PROJECT IMPLEMENTATION AND FEATURES one 21 5 Development Environment nan kaak aa aal 21 5 2 Swing Application framework ss 22 5 3 Using The MOJO Too Bats venida dieetant etienne 22 33 1 Zoom Pan Tool Bata a LT ne dt in 23 5 32 Selection Tool Balas ra 24 e E Toolse Ge nalia uisutama aata ale ala 25 53 21 XX Mayer and Hotspots MAKSA GUS 26 3 2 Add BIS TOO AS a E E aa a 28 5 3 3 3 CUstom Id ntify LOOM Teriaki es nu inio ika ka 28 5 3 9 A Help MERU ii dana kohanedes 30 3 32 User MAMI A leia al A 32 5 4 C stom WiC LA lt 32 6 SCREENSHOTS rattal 34 7 CONCLUSION A
22. e to GWIT Help Menu Click on any tool to get help on it Enjoy Custom Buttons A EME NE Print and Distance Tools la Selection Tool Bar III ale Zoom Pan Tool Bar Add Layer Geographic data is represented on a map as a layer A layer might represent a particular type of feature such as lakes highways etc A layer defines how to display the geographic data it references and where that data is located in your database A layer references the data stored in geodatabases shapefiles and so on rather than actually storing the geographic data To Add a Layer to the map 1 Click the Add Layer Icon on the tool bar or go to File menu gt Add Layer 2 In Shape file name field navigate to the folder that contains the layer For Example C gt ESRI gt MOJ23 gt Samples gt Data gt USA gt uslakes shp 3 Click the layer and click open 4 In Select a layer window click Ok The new layer appears on your map Figure 5 11 Help Dialog Cor 31 32 5 3 3 5 USER MANUAL User Manual is a web based manual for the users of the tool This gives detailed information including introduction installation instructions and how to use the tool The manual is broken down into chapters has navigation buttons as shown in Figure 5 12 Ofile E Latest HelixCharter GlobalWarminginfoTooldUserManual index htmi Table of Contents _ Start Back Next End Page 1 of 19
23. er to learn write compile and debug 1 e Other features include robustness security multi threading support and reliability All the above mentioned features make Java a popular programming language and a good choice for this project 2 2 SWING APPLICATION FRAMEWORK The Swing Application Framework is a Java specification that aims to provide a simple application framework for Java swing applications 18 The purpose of this framework is to manage the lifecycle of swing applications in an efficient and reliable manner and to provide basic resource management required for java swing applications The main emphasis of this framework is to allow programmers to quickly get started with swing applications and to adopt best practices common to every application 13 The Application base class defines the application lifecycle most importantly the startup and shutdown procedures A single instance of this class is created at startup of the application 3 The Application subclass and all its functionality are supported by the ApplicationContext base class Both these classes together manage the swing application and have a one to one relationship 13 as shown in Figure 2 2 Figure 2 2 Application and ApplicationContext class interaction Source 13 J O Conner Using the swing application framework Sun Java http java sun com developer technicalArticles javase swingapptr accessed September 2010 July 2007 The Application Co
24. eractive map based teaching tool that fits the need of both students and teachers is easy to learn and use and easily configurable This was the major source of inspiration for this thesis project This project attempts to provide a solution for one topic in a way that can be easily transferred to various other topics in future This thesis report discusses the project in detail how it was developed in accordance to the requirements gathered from high school teachers and how it focuses on teaching the students at high schools 1 2 OVERVIEW The study unit being prepared as part of this thesis gives detailed information on global warming it s affects all over the world controversial theories surrounding it and various online multimedia links to games videos and quizzes regarding climate shift and global warming Global Warming Information Tool GWIT is an audio visual map based Geographic Information System GIS tool that facilitates learning in a more interactive manner It attempts to engage the students to the course material by providing information overlaid on various maps that the students can interact with and make changes dynamically It provides a teaching environment where teachers can easily extend the tool to prepare various study units in future and also distribute research assignments to students 1 3 CONCEPT This section introduces some of the concepts used in this thesis project This includes hotspots Geographic Informat
25. fined as any point displayed over the map This tool gives user the ability to create custom hotspots and add them to CSV files that can then be loaded on to the map using the XY tool The format of the hotspot is shown in Figure 5 5 27 E format be 2 Latitude Longitude Name of the Hotspot path to the image description Figure 5 5 CSV File Format A sample CSV file is shown in Figure 5 6 northamerica csv 155 665857 19 898682 Hawaii E Data NorthAmerica costarica jpg Description Here 4 154 493062 63 588753 Alaska D Gaurav info png Comparison of photographs taken Figure 5 6 A Sample CSV File The following code snippet describes the FileBean class which represents the above mentioned hotspot in forms of java code public class FileBean public int lineNum public double lat public double lon public String nameOfPlace public ArrayList fileNames public ArrayList fileDesc public FileBean this lat 0 0 this lon 0 0 this nameOfPlace this fileNames new ArrayList lt String gt this fileDesc new ArrayList lt String gt public double getLat return lat public void setLat double lat this lat lat public double getLon lt return lon public void setLon double lon 28 this lon lon public String getName return nameOfPlace public void setName String nameOfPlace this nameOfPlace
26. ge of computers for people with physical limitations 11 JSAPI Java Speech APT uses the concept of speech engine Speech engine 16 is any system that is capable to deal with speech input and output The above discussed speech recognizers and speech synthesizers are instances of speech engine The parent package that provides all the classes and interfaces to define a speech engine is javax speech javax speech synthesis and javax speech recognition packages extend the functionalities of the basic engine with support for speech recognition and synthesis 16 This thesis project uses the speech synthesis package to provide text to speech support The four basic steps involved in all speech synthetic applications as shown in 17 are summarized below Create In this step the application grabs the instance of the speech synthesizer by calling the createSynthesizer method A particular language can be reguested at this moment using the SynthesizerModeDesc argument Allocate and Resume This allocates the system resources and puts them in a resumed state Generate This step facilitates the generation of synthesized speech from a given string Deallocate This step frees up the synthesizer resources This is important as the caller is blocked until the synthesizer is in the QUEUE_EMPTY state i e until the text is being spoken The diagram in Figure 2 4 illustrates the various synthesizer states a ALLOCATED QUEUE UPDAT
27. igureWindow java awt Window root public static GlobalWarmingInfoToolApp getApplication return Application getlnstance GlobalWarmingInfoToolApp class public static void main String args launch GlobalWarminglnfoToolApp class args parseCfgFile The rest of the attributes and operations defined in this class are shown in the class diagram for this class Figure 4 2 in chapter four 5 3 USING THE MOJO TOOLBARS MOJO provides a set of toolbars that can be included in any GIS project These toolbars are provided as part of the com esri mo2 ui tb package A toolbar is a collection of various tools that give users the capability to interact with the maps and perform other map 23 related tasks like zoom pan etc This section discusses the toolbars used in this project The toolbars are shown in Figure 5 1 ZoomPanToolBar Custom Tool Bar SelectionToolbar Figure 5 1 Toolbars Following code snippet shows how to add the ZoomPanToolBar and SelectionToolBar to a GIS application as learnt from 4 import the mojo toolbar classes import com esri mo2 ui tb ZoomPanToolBar import com esri mo2 ui tb SelectionToolBar public class GloballnfoMap extends javax swing JFrame public GlobalInfoMap declaration Map map ZoomPanToolBar zptb SelectionToolBar stb instantiation map new Map zptb new ZoomPanToolBar stb new SelectionToolBar set
28. ion System GIS overview of the features of this application and some information regarding this document 1 3 1 Hotspots Hotspots are places that have shown some evidence of climate shift or global warming over the past few decades This tool identifies over 100 such hotspots all over the world These hotspots are dynamically overlaid over the map and the students can interact with them to get audio and video information regarding global warming effects in the area of the hotspot Students have the capability to research new hotspots and add them to the map They can also add pictures or information to already existing hotspots dynamically Figure 1 1 shows the hotspots that were identified for North America and how they are overlaid on the map Hotspots are the small green dots on top of the map Figure 1 1 Concept of hotspot The architecture of the project and concept of hotspots are easily extendable This concept can be used to create new study units in future A hotspot can be anything it just represents a point on the map its significance is in the information it provides 1 3 2 GIS GIS abbreviates Geographic Information System 4 GIS is any system capable of displaying location based data and capable of performing analysis on the spatial data An example would be display of information using maps 4 Few of the biggest GIS software available to the users are ArcGIS and ArcView that are developed by ESRI This thesis pro
29. ject utilizes the GIS component architecture by the name Map Objects Java Edition MOJO The main advantage of using component software like MOJO is that it can programmed to customer reguirements using the libraries provided and Java technology Another motivation for choosing MOJO as the GIS software is the detailed documentation provided by Dr Carl Eckberg at San Diego State University and his course on GIS 4 MOJO is discussed in detail in chapter two of this report 1 3 3 Features The main features of Global Warming Information tool GWIT that will be discussed in detail in the following chapters are summarized below e GWIT provides a map based teaching environment tailored to give detailed information on global warming e This tool uses the MOJO component architecture as the GIS software and programmatically enhances it according to the needs of the user e This tool provides a generic architecture that can be enhanced or reused in various study units e Users have the ability of creating custom layers on the map in the form of points file They can dynamically add pictures and information to these points e This tool integrates the Java Speech API with the MOJO component to incorporate text to speech support to further capture the interest of the students This feature can be enhanced in future to include better quality audio voices e This tool is accompanied by a custom web page that contains links to various information sou
30. k learning Figure 5 13 Web Page for the project 34 CHAPTER 6 SCREENSHOTS This chapter contains some of the screenshots of this application Most of the screenshots have already been covered in previous chapters The remaining screenshots are presented here using Figures 6 1 6 5 P RE Wa File Help Helix Q Global Warming Information Tool World North America Africa Asia Europe South America New Map wc provides information about Global Warming and its effects all across the world Click on any link on the left for more Figure 6 1 Home screen of GWIT File Theme LayerControl ee J Figure 6 2 World map view GWIT Global Warming In File Theme LayerControl Figure 6 3 New map view This is initially blank and can be customized by the user Add Pic tool is activated in this view 35 36 Home Global Warming Info Controversies Play Games Videos Quiz Time Ho GWIT Global Warming Info Tool An Audio Visual Map based Tool for Teaching Click on the following links to watch videos regarding Global Warming o NATIONAL GEOGRAPHIC More Videos PLAY VIDEO HS 00 00 00 00 Share 4 Figure 6 4 Video page Contains links to online videos regarding global warming Global Warming Info Controversies MW Videos Quiz Time How to use GWIT GWIT Global Warming Info
31. minginfoTool View Attributes public Sring NORTHAMERICA SHPFILE PATH gublic Sring NORTHAMERICA XYLAYER SHPFEE PATH m e Sring SOUTHAMERICA SHPFLE_PATH sie Sring SOUTHAMERICA XYLAYER_SHPFLE_PATH gublic Sring EUROPE SHPFILE PATH public String EUROPE XYLAYER SHPFILE PATH aile Sring ASIA SHPFILE PATH public String ASIA XYLAYER SHPFILE PATH ste Sring AFRICA SHPFLE PATH m c Sring WORLD _SHPFILE PATH 7 Public String WORLD XYLAYER SHPFILE PATH TH Figure 4 2 Class diagram for application level component The class diagram shown in Figure 4 2 represents two high level classes of this project GlobalWarmingInfoToolApp class extends the SingleFrameApplication class which provides the functionality of managing the lifecycle of any swing application On startup it instantiates the GlobalWarmingInfoTool View class which represents the home screen that the users see on the startup of the application This class implements functionality to launch 17 the various map views according to the configurations file The actual map view is depicted by the GloballnfoMap class shown in Figure 4 3 E Global InfoMap package Map map package boolean fullMap package Legend legend package Layer layer package Acetatelayer acetlayer package Layer activelayer package int activelayerindex package JMenuBar mbar package File currDir package String dir package JMenultem attribitem package JMenultem createla
32. ntext class acts as a wrapper over the Application Class and provides access to session storage resource manager task manager local storage etc 3 as shown in Figure 2 3 This thesis project utilizes the above architecture to create a standalone java swing desktop application based on the Swing Application Framework The lifecycle of the project including startup resource and memory management error logging shutdown etc are managed by calling the appropriate methods of the SingleFrameApplication and Application classes ApplicationContext LocalStorage SessionStorage Application launch startup ActionManager exit ResourceManager ApplicationActionMap shutdown ResourceMap ApplicationAction ResourceConverter Action Resource TaskService Task M TaskMonitor Figure 2 3 JSR 296 architecture Application and ApplicationContext singletons Source 3 An introduction to the swing application framework API JSR 296 Java net https appframework dev java net intro index html accessed September 2010 n d 2 3 MAP OBJECTS JAVA EDITION Map Objects Java Edition MOJO is a collection of various map based java components that can be used to create variety of web based and desktop GIS applications 5 This allows for creation of both client side GIS applications and server side constructs to integrate with internet based applications anywhere in the world Some of the main features include displaying dynamic real time geogr
33. oping a GIS application using this technology e A rich set of java swing components are included with Map Objects that help to create applications with attractive User Interfaces Various dynamic dialogs map views toolbars intelligent legends can be created easily 14 Easy integration of Map Objects with the Swing Application Framework facilitated creation of a desktop application that manages the whole application lifecycle error handling resource management etc which reduces the burden on the developer e Developing web based GIS applications Even though this feature is not used in this project but it provides a very useful future enhancement Any application developed using Map Objects Java Edition can be easily distributed over the internet using Sun Java Web Start technology 14 2 4 JAVA SPEECH API The Java Speech API provides a platform independent easy to use and integrate interface to the speech technology via speech recognition and speech synthesis 11 Speech recognition facilitates speech to text 1 e it enables computers to process audio speech input and convert it to text 11 Speech synthesis on the other hand is referred to as text to speech technology which enables computers to produce synthetic speech from text 11 These technologies are widely used in various software applications like voice generated response applications dictation systems and online tutorials Such applications also help in increasing the usa
34. r all the continents of the world This tool shall identify hot spots in each continent that have shown some impact of global warming and give detailed audio and visual information regarding each of these spots This tool shall be created so that students can easily identify and relate various places all over the world This tool shall have a custom web page that will provide detailed information on global warming its impacts controversial theories surrounding it and various online links to games videos and quizzes to capture interests of the students towards global warming and climate shift This tool shall give users the ability to edit the content and pictures of the existing hotspots This tool shall have a customizable architecture so that various study units can be prepared for teaching various courses in the future This tool shall provide students the ability to research new points and add their own pictures and content to existing or new points This can be used by the teachers to distribute research based assignments and homework to the students This tool shall have detailed help menus to guide users through all aspects of the tool and its correct usage This tool shall be accompanied by detailed documentation and tutorial on how to customize the tool to prepare new study units in the future The look and feel requirements regarding the user interface are as follows 1 The user interface shall be designed in a way th
35. rces on the internet regarding global warming and various quizzes videos and games related to it to capture the interests of the students e This tool is easy to learn and use and is accompanied by a very informative help menu and a detailed web based user manual to guide the students and teachers through various features of this tool 1 4 ABOUT THIS DOCUMENT This document is prepared in seven chapters Chapter one provides an overview of the thesis project and the motivation behind the project Chapter two gives details on all the technologies used during the development of the project Chapter three and four concentrate on the initial phases of software development life cycle They include requirement gathering and analysis and design of the project in the form of architecture diagram and various class diagrams Chapter five gives detailed information on all the features implemented as part of this thesis including code snippets wherever required Chapter six contains few screenshots of the application and chapter seven concludes this report by presenting a conclusion and some suggestions regarding future enhancements CHAPTER 2 TECHNOLOGY This chapter focuses on various technologies used in the development of this thesis project 2 1 JAVA Java is an object oriented cross platform programming language that is intended to let application developers write once run anywhere 10 It is designed to be general purpose concurrent
36. stand point Figure 3 1 depicts the overall lifecycle of the project Plan Analyze Design Implement Requirements Deliver Figure 3 1 Project life cycle Source 2 Analysis World Strategize Analyze Architect Analysis World http analysisworld com RequirementsGathering aspx accessed September 2010 n d GWIT Global Warming Information Tool has been made under the guidance of Dr Carl Eckberg of Computer Science department San Diego State University and Ms Debra Byrd of Helix Charter High School This tool is designed to facilitate teaching in high schools with the use of interactive maps The study unit being prepared under this thesis project is tailored to give detailed information on global warming all over the world The main users of this tool would be the students of high schools which made it even more important to carefully collect and analyze the requirements so that the project is made in a manner that is useful to the students The main requirements regarding the features and final deliverables of the project as discussed with Ms Debra Byrd at the start of the project are summarized below The functional and data requirements of the project are as follows 10 11 12 To create an audio visual map tool to facilitate teaching in high schools in an interactive manner The study unit being prepared as part of the thesis shall give detailed information on global warming This tool shall cove
37. ted to a hotspot Another feature could be to allow users to embed videos corresponding to the hotspots 1 2 3 4 5 6 7 8 9 10 11 12 13 14 39 BIBLIOGRAPHY WORKS CITED Advantages of Java IBM http publib boulder ibm com infocenter aix v6r1 index jsp topic com ibm aix prftungd doc prftungd advantages java htm accessed September 2010 n d Analysis World Strategize Analyze Architect Analysis World http analysisworld com ReguirementsGathering aspx accessed September 2010 n d An introduction to the swing application framework API JSR 296 Java net https appframework dev java net intro index html accessed September 2010 n d C Eckberg CS 537 Component GIS Architectures Lecture notes on MapObjects Java Edition San Diego State University San Diego CA Fall 2007 D Falkman Review ESRI MapObjects Java Edition 2 Javaboutique http javaboutique internet com reviews ESRI accessed September 2010 n d FreeTTS 1 2 A speech synthesizer written entirely in Java programming language Sun Microsystems Inc http freetts sourceforge net docs index php accessed September 2010 n d High level software design Target http www the software experts de e_dta sw design high level htm accessed September 2010 n d Java features Roseindia net http www roseindia net java java introduction java features shtml accessed June 2010 n
38. ting the toolbars on the map zptb setMap map stb setMap map getContentPane a getContentPane a zptb dd dd stb Any additional tools can be added on a custom JToolBar which is part of javax swing package The JToolBar can be added to the map in the same way as shown above 5 3 1 Zoom Pan Tool Bar The Zoom Pan Tool Bar provides a wide variety of tools enabling users to perform activities like zoom pan change the extent of the map etc Figure 5 2 shows the various tools 24 Zoom To Full Extent Zoom Out Pan One Direction Next Extent Previous Extent identify Zoom To Active Layer Zoom In Figure 5 2 Zoom Pan Tool Bar available in the Zoom Pan Tool Bar The icons used are pretty common and self descriptive to a large sense The usage of each tool as learnt from 4 is summarized below e Previous Extent All the displays of the map keep getting saved Previous extent helps user to go back to an old display of the map e Next Extent Allows the user to go forward to the next display of the map e Zoom to Active Layer Allows the user to zoom to the active selected layer e Zoom to Full Extent Gives user the ability to zoom to the fullest extent of all layers on the map Helps user to return to the original view of the map e Zoom In Gives user the ability to zoom in to any area on the map e Zoom Out Gives user the
39. uded with the application supports all popular browsers Ease of use Considering that majority of the users of this application would be students in high schools ease of use were a major requirement This application fulfils this requirement to a large extent The application is easy to learn and use intuitive and is accompanied by a detailed web based user manual and help menu to guide the users at all times Although the requirements set at the beginning have been fulfilled a lot of scope exists to further extend this application to implement more functionality Few suggestions for future enhancements are presented below A lot more features can be implemented to enrich the user experience even more Some examples would be adding animations and games in the tool itself to further capture the interests of the students The application can be made web based using the Java Web Start technology The application can deployed on a central server and made accessible via a URL This would remove the requirement of installing the application separately on each machine and would definitely increase the usability 38 The text to speech support is very basic in this application A lot more speech API s can be researched to incorporate variety of voices in the application Various different languages can be used in the future to make this a multi lingual teaching tool The Add Pic tool can be extended to incorporate multiple photo albums rela
40. urable to fit the needs of both teachers and students and also supports creativity This thesis project attempts to find a solution for one topic in a way that can transfer to some other topics A Map Based Teaching Aid is an audio visual map based GIS tool that facilitates teaching through the use of interactive maps It attempts to engage the students to the subject by providing information overlaid on various maps that the student can interact with The current unit being prepared as part of this project is tailored to give information on Global Warming and its affects all over the world Various places that have shown some evidence of global warming are identified as hotspots by this tool These hotspots are dynamically overlaid as points over the map and the students can interact with the hotspots to get audio and visual information regarding global warming effects in the area The students have the capability to research and add new hotspots and also dynamically add pictures to the existing hotspots This tool is accompanied by a custom web page that provides detailed information on global warming its impacts controversial theories surrounding it and various online links to games videos and quizzes to capture interests of the students towards global warming This tool also integrates the Java Speech API with the MOJO Map Objects with Java Edition tool provided by ESRI This enables all the information regarding hotspots to be delivered in an au
41. ut various layouts and other dependencies NetBeans provides a UML modeling tool which was used to create the class diagrams shown in chapter four To summarize following tools and technologies were used to develop this project NetBeans IDE available at 15 Java SE Development Kit downloadable at 9 Map Objects Java Edition installation CD obtained from Dr Carl Eckberg Computer Science Dept San Diego State University 22 e FreeTTS 1 2 speech synthesizer for java applications available at 6 5 2 SWING APPLICATION FRAMEWORK The merits of using Swing Application framework are discussed in the technology section in chapter two This section describes how the framework was used and some java code snippets are provided GlobalWarmingInfoToolApp is the base class which extends the SingleFrameApplication class The following code snippet represents the standard functions provided by this class The startup method launches the GlobalWarmingInfoTool View class which represents the home screen The getApplication method returns the single static instance available for this class The main function calls the launch function to start the application and calls the custom function to parse the configuration file prepared for this project public class GlobalWarmingInfoToolApp extends SingleFrameApplication Override protected void startup show new GlobalWarminglnfoToolView this dOverride protected void conf
42. xtField fileName new JTextField Enter image path 25 package JTextField fileDesc new JTextField Enter image description 25 fetchEditBean Attributes package String fileName package ArrayList rows package File csv Figure 4 6 Class Diagram for Add Pic tool handler manages the updates to the CSV file bean 20 Figure 4 7 depicts the class diagrams for the various helper classes developed during the development of the project Blabber class imports the javax speech package to implement text to speech functionality HelpMain class implements the help menu created to enrich the user experience E Blabber Abribudes ublic S i c desc public Synthesizer synth S DistanceTool Altributes package int startx package int starty package int endx package int endy package int currx package int curry package Point init Point j Point Attributes private JButton back private JButton forward private JButton zoomTo private JButton zi private JButton zo private JButton full private JButton pan private JButton pand private JButton identify private JButton find private JButton query private JButton select private JButton buffer private JButton attributes package File currDir package String dir package JPanel myjp package JPanel myjp2 package JButton prtjb package JButton addlyrjb package JButton ptrib F eJ Figure 4 7 Class Diagram for Helper Classes 21 CHAPTER 5 PROJECT IMPLEMENTATION AND
43. yeritem package JMenultem promoteitem package JMenultem demoteitem package JMenultem printitem package JMenultem addlyritem package ZoomPanToolBar zptb package SelectionToolBar stb ESS Bir Figure 4 3 Global Info Map Class This class extends all the features toolbars and other reguired functionalities from the com esri mo2 package which is part of the standard Map Objects Java Edition API as provided by ESRI The classes providing the XY feature support are depicted in Figure 4 4 This functionality is inspired from 4 AddXYtheme and XYfeatureLayer class provide the functionality of adding custom layers on the maps The XY points are read from Comma 18 E XYfeatureLayer Aribules Alributas package String fileName package ArrayList rows package File csv package String opt package double ab 0 75 package BaseFields fields private Vector featureVector Operations public XYfeatureLayen BasePointsArray bpa Map map d createF eaturesAndFields BasePointsArray bpa Map map ma opt CSVFileName mFile Bean E FileBean Alribulas public int lineNum public double lat public double lon public String nameOfPlace public ArrayList fileNames public ArrayList fileDesc Operations public FileBean public double getLat public void setLat double lat package JFileChooser jfc new JFileChooser package BasePointsArray bpa new BasePointsArray
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