GDADS data administration (D04)
Contents
1. 14 z 3 Choose the correct Shane Pronerties table name and the Shape Type POLYGON E Start Bounding Box field names for the key X Minimum 11 999808583701652 Y Minimum 18 000871999997788 and the polygon of N r Outline Dataha Table Name jsko lz Field Name shape zi ial 4 Click Apply Primary Key Name id g Map Display List Display Tae Cancel Database Manager Library Help Top Archive Manager Viewing User Tables In the Outline Database Field panel at the bottom of the interface choose Table Name the name of the table into which the polygons are to be loaded Field Name typically shape the special field into which shapes are loaded Primary Key Name the index number in the shape file will be loaded into this field Then click the Apply button 2006 Intrepid Geophysics lt 4 Back gt2. A survey boundary polygon for surveyname is also added to the database Surveyname is the key which GDADS uses to link the survey information and the location boundary polygon to actual data 1 Collate the survey data and its documentation 2 QC Check data quality completeness and detail of documentation Store quality data 3 Generate grids of all required for sale products see note below MUST be projected grids 4 GridMerge Incorporate grids into country wide GridMerge grid datasets see note below 5 Store the data in directory surveyname with for sale products organised within subdirectories 6 Generate a survey boundary polygon in the specified Datum and Projection see note below 7 Add the surveyname records to the metadata and boundary polygon tables of the GDADS database 8 Archive data 9 Ifnon confidential copy data to the Front Office computer system for customer user access 2006 Intrepid Geophysics lt 4 Back gt INTREPID User Manual GDADS data administration D04 6 Library Help Top Library Help Top 4 Back gt Important Boundary Polygons use the specified Datum and Projection The configuration file Properties txt specifies a Datum and Projection for the GDADS database That specified Projection would typically be GEODETIC GDADS performs all of its map display interface operations based on this specified Datum and Projection and so the count
3. scales Typically these tables are set up once and need no further updating or editing The process is done through the Database Manager see Adding Country and Map Sheet Records This initial setup is often part of the customisation provided by Intrepid Geophysics Map Display List Display Database Manager Archive Manager Click the Database Manager button in the lower right of the interface then click the database button and load the GDADS database 7 Database Manage OUTLINES 100k new country maces 100kodd 50k_new 250k SURVEYINFO 50k_odd T SURVEYINFO sutveyname WindyPlace ground_clearance 80 surveytitle WindyPlace Aeromaginary St sampling_interval 5 year 2000 line_spacing 200 cantractor AeroGecko tie_spacing 2500 confidential line_direction 0 magnetics V tie_direction 30 tadiometrics mag_sensor_type SingleSensor gt em full256 graviy domain ia 7 Li E Is lt lt 10 out of 10 gt gt gt Map Display List Display Add Entry Update Entry Remove Entry Database Manager j Archive Managel Viewing User Tables hee Library Help Top 2006 Intrepid Geophysics 4 Back gt INTREPID User Manual GDADS data administration D04 5 Library Help Top lt 4 Back gt 1 Main database field display panel Select the tab to display each of the user admini
4. INTREPID User Manual GDADS data administration D04 1 Library Help Top lt 4 Back gt GDADS data administration D04 Top The main tool used by the data administrator for the maintenance of the GDADS database is the Database Manager Sections Database Manager User Interface to Adding Country and Map Sheet Records Two other interfaces Map Display and List Display allow the user to view and query the database contents below Map Display User Interface GDADS default user interface is its Map Display In order to return to Map Display at any time click the Map Display button on the lower right of the interface Map Display is a map view of the surveys stored in the GDADS database together with one of a series of standard map sheets and overlain with a country outline Surveys are rendered onto the display as filled polygons The interface allows a survey or a map sheet to be selected and to query the properties of the selected object There are a number of display controls such as zooming in amp out panning and reset A database button opens a dialog box which is used to control the contents of the display which tables of the database are displayed Map Display s controls are briefly documented in the following list Note that there is a different version of Map Display in the GDADS Front Office In the Front Office the aim is to provide a simple and highly intuitive interface for a GDADS customer user with n
5. an image view of those individual surveys Instead it displays image data for the selected area by extracting a subset from a special country wide merged grid which is prepared beforehand by the GDADS data administrator These special country wide merged grids must be prepared for each type of data that GDADS is required to display such as magnetics totalcount radiometrics potassium It is recommended that high quality merged grids are prepared using INTREPID s GridMerge Since the customer user visualisation and simple map making use these merged grids and the user can zoom in to view data in detail it follows that the merged grids should retain all of the high resolution detail that exists in the best quality individual survey grids Consequently these merged grids could be very large grid files 2006 Intrepid Geophysics 4 Back gt INTREPID User Manual GDADS data administration D04 8 Library Help Top lt 4 Back gt Note that any other files can also be stored in a GDADS data archive The INTREPID format files are required for GDADS to be able to show the data but any other files can be included in the archive as well For example you can include the original contractor s located data tape format or a Geosoft database format Prepare a Survey Boundary File Arc shape file format When adding a new survey to the GDADS database a survey boundary polygon file will be needed The required file is a sta
6. directory ies another_arbitrary subdirectory All of these directories and files are arbitrary files included in the archive but are not yet_another_arbitrary subdirectory data for visualisation or delivered yet more arbitrary files with data sales products Survey2_Directory Survey3_Directory Note the mixing together of the structured organised requirements and other non structured parts of the directory tree From an archiving viewpoint anything may be included and everything will be archived On the other hand however from a visualisation and data sales viewpoint GDADS expects to find specific files in specific locations and only those files can be visualised If other grid files are present in the grids subdirectory those other grids will be delivered with data sales products but they cannot be viewed in GDADS visualisation Adding Survey Specifications to the Database SurveyInfo Table Having collated all of the data and organised it in GDADS ONLINE disk storage area there are two tables of the database which must be updated Enter the survey specifications first into the SurveyInfo table and then import the survey s boundary polygon into the Outlines table Choose Database Manager lower right corner of the GDADS interface to open the Database Manager Click the database button and load the GDADS database The Database Manager shows each of t
7. directory structure and files ONLINE GDADS Data Directory country wide GridMerge files for magnetics totalcount potassium uranium thorium em and gravity used for visualisation and map making Surveyl1_Directory magnetics linedata directory not Library Help Top INTREPID line dataset grids files magnetics amp magnetics ers plus other magnetics derived files such as 1VD RTP DEM these latter not for visualisation but all grids in this would be delivered grid products in terms of data purchasing any_other_arbitrary subdirectory ies any arbitrary files in here would be part of the archive but data for visualisation or delivered with data sales products 2006 Intrepid Geophysics 4 Back gt INTREPID User Manual GDADS data administration D04 11 Library Help Top lt 4 Back gt radiometrics lLinedata INTREPID line dataset grids files totalcount amp totalcount ers files potassium amp potassium ers files uranium amp uranium ers files thorium amp thorium ers plus other radiometrics derived files such as K_cps K_percent these latter not for visualisation but all grids in this directory would be delivered grid products in terms of data purchasing any_other_arbitrary sub
8. e Aeromaginary St sampling_interval 5 year 2000 line_spacing 200 contractor AeroGecko tie_spacing 2500 confidential line_direction 0 magnetics V tie_direction 90 radiometrics mag_sensor_type SingleSensor Set em full256 gravity domain nia X 4 gt ls lt lt 10 out of 10 gt gt gt Add Entry Update Entry Remove Entry Archive Manager Viewing User Tables be Adding Country and Map Sheet Records Library Help Top The GDADS database has several other tables which contain boundary polygon files and which are used in the Map Display Country typically has just one record which contains the polygon shape file boundary for the state or country that the GDADS database covers There are typically several map sheet tables for example 50K 100K 250K Each of these tables contain a series of records one record for each standard map sheet in the given series Again as for the survey boundary Outlines all polygons are created as polygon shape files which are geo registered to the Datum and Projection specified for the GDADS database All of these tables are virtually the same as the survey boundary Outlines table They have a key field called id and the special field used to store the boundary polygon To add a new record Add Entry or to edit Update Entry or delete a record Remove Entry is identical to the procedure described for the survey boundary O
9. e process of checking for completeness The data administrator would typically have a series of quality control procedures to examine the quality of the line data and gridded data delivered from the contractor or other data source This quality control process is fundamental to ensure the success of the overall data management strategy which GDADS facilitates The old maxim garbage in garbage out applies During this collation and QC phase the data administrator should note all of the details that will be required when adding a new record to the GDADS database such as survey specifications INTREPID Data Import Gridding and GridMerge To provide the GDADS functions of image visualisation and delivery of data GDADS uses the data processing tools of INTREPID Thus Geophysical line data must be imported and stored as INTREPID line datasets Survey gridded data used for visualisation must be in INTREPID ERMapper format All grids used by GDADS must use projected coordinates the grids cannot be in the GEODETIC longitude and latitude projection but must be projected onto some flat plane See the boxed note above for more details The visualisation of individual surveys in GDADS uses the individual grids of each specific survey However when it comes to visualising the data for a selected map sheet area there could be two or more surveys or none covering that selected sheet GDADS does not patch together
10. es for each of these four types of datasets surveyname Diamond SE ground_clearance fo surveytitle Diamond SouthEast Survey sampling_interval ff yearf19985 O line_spacing zoo tie_spacing 2500 line_direction 0 tiedirection 90 mag_sensortype SingleSensor full256 domain Nia 7 confidential magnetics V radiometrics V emf gravity The country wide grids used for visualisation whenever the user selects a standard map sheet area rather than a specific survey must be named magnetics potassium uranium thorium totalcount the four radiometrics grids em and gravity These grids must be located in the GDADS ONLINE data directory For each survey dataset all data are collated into their specific SurveyName directory Within each of those directories the following subdirectory structure must be used depending of course on exactly what types of data exist for a given survey and whether both grid and line data are available ONLINE GDADS Data Directory Survey1_Directory magnetics linedata grids radiometrics linedata grids Survey2_Directory Within the linedata sub directories will be the line data stored as INTREPID line datasets Within the magnetics grids subdirectory will be the magnetics grid named magnetics There will typically be additional grids such as DEM 1VD RTP These additional grids cann
11. he user managed tables of the database one table per tab page in an automatic form view Choose the SurveyInfo tab you can use the records navigation buttons lt lt gt gt to scroll through the SurveyInfo records To enter a new record enter a new unique surveyname which must be the same name as the directory containing that survey s data and add correct entries to all fields of the record Then click the Add Entry button You will be prompted to confirm this Library Help Top 2006 Intrepid Geophysics 4 Back gt INTREPID User Manual GDADS data administration D04 12 Library Help Top lt 4 Back gt WARNING 1 There is no clear distinction between Add Entry and Update Entry In adding a new record it is not possible to start with a blank record Therefore do use care to ensure that e Correct data entries have been made to all fields of the new record The Add Entry button is clicked and not the Update Entry WARNING 2 Don t forget to also add a corresponding survey boundary to the Outlines table 1 Load database 2 Choose SurveylInfo 3 New unique surveyname WindyPlace Aeramaginary St A m gt D Q 2 m m E ia a 5 Add this nev E entry to E database User Tables i Library Help Top 2006 Intrepid Geophysics lt 4 Back gt INTREPID User Manual GDADS data administration D04 13 Librar
12. in required grid data files naming those files correctly and organising them into a defined subdirectory structure The rules for this directory structure and naming conventions are best illustrated with an example Assume a fairly typical collection of airborne geophysical datasets containing the following types of data for viewing and for sale magnetics radiometrics em and gravity Assume also that the for sale products for each of these types can include line data and grids Then The configuration file Properties txt would contain the following entries GDADS properties buydata products magnetics radiometrics em gravity GDADS properties buydata products labels Magnetics Radiometrics EM Gravity GDADS properties buydata flavours Grids LineData GDADS properties buydata addons radiometrics options default potassium uranium thorium totalcount Library Help Top 2006 Intrepid Geophysics lt 4 Back gt INTREPID User Manual GDADS data administration D04 9 Library Help Top Library Help Top 250k 100k COUNTRY SURVEYINFO 50k OUTLINES imaces T SURVEYINFO 4 Back gt Note radiometric options defines further radiometrics grids which may be visualised and made into maps amp GeoTiffs and default is a special case allowing a ternary radiometric plot if potassium uranium and thorium are all available The GDADS database would have CheckBox type entri
13. ive Manager 7 Shape Data Read Main list display panel listing the surveys in the GDADS database Menu Item File Menu Item Options A O N a Database button Opens the dialog box used to manage the display list Drag amp Drop Panels Using the mouse select a map object from the list then drag and drop it on a chosen panel 5 Drag amp Drop Panel 1 Information Displays the database s metadata for the selected object Drag a survey and drop it onto this panel to view the survey s main specifications 6 GDADS Back Office Main Functions Buttons Allows the user to navigate to each of GDADS different GUI interfaces which provide its four primary Back Office functions 7 Status Panel Library Help Top 2006 Intrepid Geophysics lt 4 Back gt INTREPID User Manual GDADS data administration D04 4 Library Help Top lt 4 Back gt Database Manager User Interface The administrative tools needed to maintain the database are found in GDADS Database Manager The most common function is adding a new survey to the database Section Adding a New Survey This requires two tables to be updated adding metadata to the SurveyInfo table and the survey s boundary polygon to the Outlines table As noted in Section Tables in the GDADS Database in GDADS database D03 the GDADS database has several other tables such as a country table and a series of tables for each of standard map sheets
14. lygons used to define survey boundaries and map sheet boundaries must be generated in terms of that specified Datum and Projection The specific Projection defines a unit of distance In brief the grid files used by GDADS may be in any Datum and Projection provided that the Projection is not GEODETIC but is an actual projection onto a flat plane In fact different grids may use a different Datum and Projection provided that a consistent unit of distance is implied by each of the projections Thus individual small survey grids might be gridded in various different UTM zones different Projections Large grids especially the country wide GridMerge grids might use for example an Albers Equal Area Projection 2006 Intrepid Geophysics lt 4 Back gt INTREPID User Manual GDADS data administration D04 7 Library Help Top Preparation Library Help Top lt 4 Back gt Gathering Required Information and Files The process of loading a new survey into GDADS takes a few minutes The preparation to ensure that quality data are stored may take much longer An important first step is to collate all data and may include Final data delivery file s e Associated format description and contractor s detailed specifications readme files lt Final report as hard copy or preferably as a document file e Associated raw data files diurnal records for example Implicit in the collation of data is th
15. n Exit Shape Type POLYGON Start Bounding Box x Minimum 18 534159544159547 Y Minimum 23 301811965811964 Library Help Top 2006 Intrepid Geophysics lt 4 Back gt INTREPID User Manual GDADS data administration D04 15 Library Help Top lt 4 Back gt 8 Menu File Open and browse to the required Arc shape file containing the survey boundary 0 x x File File T Shane Nisnlav T Shane Nisnlav Shape Type POLYGON Start Bounding Box X Minimum 18 54383475783476 Y Minimum 23 48741168091168 Shape Type POLYGON Start Bounding Box X Minimum 18 503131054131053 Y Minimum 23 697192307692305 EA DBShape Import Tool F lol x Fie ai Shane Nisnlav Select File Save to Database and Exit to Database and Exit Shape Type POLYGON Start Bounding Box X Minimum 18 503131054131053 Y Minimum 23 697192307692305 Library Help Top 2006 Intrepid Geophysics lt 4 Back gt INTREPID User Manual GDADS data administration D04 16 Library Help Top lt 4 Back gt 10 Menu File Save to Database and Exit closes the DBShape Import Tool and returns to the Database Manager Geo Science Data Archive and Distribution System Click Add Entry User Tables Library Help Top 2006 I
16. ndard Arc shape file and must use the defined Datum and Projection specified for the given GDADS database The shape file can be generated in any appropriate manner such as digitising around a grid file in ArcView One way of generating this boundary polygon file using INTREPID is described in Creating a boundary polygon in GDADS D17 The importing of this shape file is described in Section Adding the Survey Boundary to the Database Outlines Table Organising the Data Files in GDADS ONLINE Disk Storage In order for GDADS to function effectively in terms of allowing data visualisation and purchasing of data it needs to know some details about What types of data are available for viewing What the grid file names are for each of these types of data Where those grid files can be found Details about what grid and line datasets are available for sale GDADS gets these details from the configuration file Properties txt see Software Configuration Part2 Configuration File Properties txt in Installing GDADS D02 and GDADS Back Office config file Properties txt D18 and associated fields in the GDADS database see GDADS database D03 and Modifying the GDADS database design D16 These configuration details define a systematic subdirectory structure and file naming and file location conventions as documented here Thus an essential part of adding a new survey dataset into the GDADS environment is creating certa
17. ntrepid Geophysics lt 4 Back gt INTREPID User Manual GDADS data administration D04 17 Library Help Top lt 4 Back gt 11 Back in Database Manager ensure both input fields are correct and click the Add Entry button Geo Science Data Archive and Distribution System SINNED O 12 And return to Map Display for a visual confirmation of a successful database entry Library Help Top 2006 Intrepid Geophysics lt 4 Back gt INTREPID User Manual GDADS data administration D04 18 Library Help Top lt 4 Back gt Editing and Removing Survey Database Records The Database Manager also allows the editing of any database entries including importing an alternative shape file into the survey s polygon field in the Outlines table Click Update Entry once the required edits have been applied Likewise it is possible to remove entries click the Remove Entry button Note that in the case of removing a survey ensure that the appropriate record from both the SurveyInfo table and the Outlines table are removed Geo Science Data Archive and Distribution System loj x Fie Options p Database Manager me REGION OUTLINES 100k new country maces 100kK_odd 50k_new 260k SURVEYINFO 50k_odd n T SURVEYINFO surveyname VindyPlace ground_clearance 80 surveytitle WindyPlac
18. o data administrative capability See Map Display User Interface for a detailed description of the Front Office Map Display List Display Database Manager Archive Manager m DISPLAYNAME Library Help Top 2006 Intrepid Geophysics 4 Back gt INTREPID User Manual GDADS data administration D04 2 Library Help Top Library Help Top N Oo oO FB WO lt 4 Back gt Main map display panel Use the database button 2 to change the display contents Database button Opens the dialog box used to manage the contents of the map display Mouse modes Zoom In Mouse mode Zoom Out Mouse mode Zoom to Extents Mouse mode Pan Mouse mode Select Drag amp Drop Panels 10 11 Using the mouse select a map object from the list then drag and drop it on a chosen panel Drag amp Drop Panel i Information Displays the database s metadata for the selected object Drag a survey and drop it onto this panel to view the survey s main specifications Drag amp Drop Panel Image View Drag a survey and drop it onto this panel to view the survey s main for sale image datasets This image view is made available in the Back Office but is primarily designed as the Front Office Image View tool for use by GDADS customer users See Image View GDADS Front Office D09 for details Note that from Image View the Pu
19. ot be visualised within GDADS but they are automatically included in the data delivery for purchased magnetics grid data 2006 Intrepid Geophysics lt 4 Back gt INTREPID User Manual GDADS data administration D04 10 Library Help Top lt 4 Back gt Within the radiometrics grids subdirectory will be the various radiometrics grids named totalcount potassium uranium and thorium if available All of these grids can be visualised and used for map making If all three of potassium uranium and thorium are present then there is a further visualisation option ternary radiometrics There may be additional grids for example k_cps k_percent These additional grids cannot be visualised within GDADS but they are automatically included in the data delivery for purchased radiometrics grid data Similarly for em and gravity In addition to the above structured subdirectory requirements there can be any other directories subdirectories and files of any type within the SurveyName_Directory None of these additional files can be visualised within GDADS and are not delivered with a data purchase These additional directories and files however are included in the archive of SurveyName_Directory To summarise by illustration given the above configuration file entries and assuming a typical survey having both magnetics and radiometrics data with line data and grids available for sale GDADS would expect the following sub
20. rchase Data wizard can be started but it could fail unless all of the commercial details for example prices for products are correctly set up in the configuration file These details are normally set up in the Front Office version of the configuration file GDADS Back Office Main Functions Buttons Allows the user to navigate to each of GDADS different GUI interfaces which provide its four primary Back Office functions Status Panels Latitude amp Longitude feedback from current mouse position in the map panel 2006 Intrepid Geophysics lt 4 Back gt INTREPID User Manual GDADS data administration D04 3 Library Help Top lt 4 Back gt List Display User Interface An alternative view of the GDADS database is presented in the List Display As with Map Display the user can query the database for information about the listed surveys Click the List Display button on the lower right of the interface to open this tool All surveys are simply listed using a thumbnail graphic which shows each survey s boundary outline Like Map Display this function is not extensively used in the Back Office and is only briefly described 0j x 5 List Display R Survey Name surveyOz1 surveyOz2 surveyOz4 surveyOz5 Diamond_SE Diamond Diamond_Nvy Rehoboth_Part WindyPlace 4 gt Map Display 6 List Display Database Manager Arch
21. ry and map sheet polygons and all survey boundary polygons must be defined in that Datum and Projection Important Grid Files used by GDADS must be Projected All grids that are used by GDADS for visualisation cannot be GEODETIC but must be defined in terms of projected real distance coordinates for example UTM coordinates The reason for this is that GDADS Purchase Data wizard determines how much data has been purchased on the basis of the area of a grid and those areas must be defined in terms of some conventional unit of distance rather than degrees There are some implications regarding the Projection units of distance the survey line spacing specified for each survey in the GDADS database and the unit pricing for grids and line data specified in the configuration file which are documented in Section Customising Products for Sale in Setting up the GDADS Front Office D06 and paragraph Commercial Requirements B in Modifying the GDADS database design D16 In terms of quantity for sale GDADS can only compute an area Thus it knows from the survey boundary polygon the total area of grid data for sale or for a particular map sheet GDADS can calculate the area of the intersection of a given survey with the specified map sheet It has been noted elsewhere that a specific Datum and Projection must be defined for a GDADS database specified in the configuration file Properties txt and that all po
22. stered tables Menu Item File Menu Item Options Database button Opens the dialog box used to manage the display list a Ff W N Region Outline is not a Drag amp Drop Panel instead click inside this panel Opens the Region Outline Import Tool This is an important database administrative tool used in the initial setting up of map sheet tables of a GDADS database Allows the GDADS data administrator to import an Arc shape file containing all of the map sheets for a given region layer for example the 1 250k series See Adding Multiple Map Sheets for details 6 GDADS Back Office Main Functions Buttons Allows the user to navigate to each of GDADS different GUI interfaces which provide its four primary Back Office functions 7 Status Panel Adding a New Survey Checklist Library Help Top There are three components to data stored in GDADS Survey data stored in a directory on the system s hard disk Survey description specifications describing the survey stored in the database Survey location a survey boundary polygon also stored in the database These three components are linked together by a unique identifier the surveyname Thus every survey must first be assigned a unique survey name A surveyname directory is created in GDADS ONLINE storage area and all survey files are written into that directory A new record is added to GDADS database containing brief survey specifications for surveyname
23. us polygons due to small isolated pockets of grid cells Take care to select the correct polygon With the correct shape selected and displayed Choose menu File Save to Database and Exit Even though this text is save to database there is still one further step Back in Database Manager with the correct shape now displayed in OUTLINE Enter the correct surveyname in the Survey_Name field 2006 Intrepid Geophysics lt 4 Back gt INTREPID User Manual GDADS data administration D04 14 Library Help Top lt 4 Back gt 6 Click the Add Entry button You will be prompted to confirm this The newly added survey may be inspected visually by returning to GDADS Map Display view of the database WARNING 1 Again there is no clear distinction between Add Entry and Update Entry In adding a new record it is not possible to start with a blank record Therefore do use care to ensure that Correct data entries have been made to both fields of the record The Add Entry button is clicked and not the Update Entry Geo Science Data Archive and Distribution System Click the displayed Sannin SURVEYINFO 50k OUTLINES IMAGES shape to open the DBShape Import tool outline surveyname surveyOz2 7 Click the displayed shape in order to open the DBShape Import Tool EBoashape Import Took TATE Save to Database and Exit Select File Ope
24. utlines table 2006 Intrepid Geophysics lt 4 Back gt INTREPID User Manual GDADS data administration D04 19 Library Help Top lt 4 Back gt Adding Multiple Map Sheets 1 Click Region Outline Since the loading of multiple map sheets is hardly practical if done one at a time using the Add Entry button the Database Manager provides a special tool for loading a whole series of map sheet polygon shapes First create the Arc shape file containing multiple polygons one polygon for each map sheet A shape file may contain any number of polygon shapes These polygons must be defined on the Datum and Projection specified for the GDADS database Then click the Region Outline panel button on the top right of the Database Manager interface This opens a new interface which is similar to the other shape file import interfaces but has some additional data entry fields to define Use the File button to browse to the polygon shape file containing the multiple polygons for the entire map sheet series or choose Menu File Open When the shape file is opened the list of polygon shapes in the file is shown in the top left panel the Shape ID List The shape for the current selection is displayed in the top right panel and information about the shape in the middle panel Geo Science Data Archive and Distribution System 10 x File Options REGION OUTLINE
25. y Help Top lt 4 Back gt Adding the Survey Boundary to the Database Outlines Table Library Help Top The addition of the survey boundary is simple Prepare a shape file of the survey boundary which must be geo registered to the Datum and Projection specified for the GDADS database In the Database Manager choose the OUTLINES tab again you can use the records navigation buttons lt lt gt gt to scroll through the OUTLINES records To enter a new record enter the same new surveyname as used in the SurveyInfo record and which must be the same name as the directory containing that survey s data The next steps are not particularly intuitive 1 Left click in the existing polygon outline This will open the DBShape Import Tool Select menu File Open Browse to the shape file for the new survey being added The new shape will be displayed in the DBShape Import Tool Note that a shape file can contain multiple polygons in which case the shape ID will be listed in the Shape ID List left hand panel of the DBShape Import Tool If there are more than one step through the list and ensure that the correct polygon is selected and displayed The process of creating a shape file described in Creating a boundary polygon in GDADS D17 generates polygons which encircle grid cells Whilst the process always generates a correct polygon which encloses the whole survey grid it can also generate one or two spurio
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