Map Legend Editor (T45f)
Contents
1. Intrepid MapComposition To E in Choose the type and number of entries then OK INTREPID will create a legend according to your specifications in the Legend Editor window Note You cannot use histogram legends with vector datasets Specifying the grid dataset or Z field 5 If Where possible INTREPID automatically loads the grid dataset or vector dataset field from the context and shows its name as the Z Field at the top of the Legend Editor window If this is satisfactory go to step 6 You are composing a grid dataset and wish to specify the grid dataset associated with the legend OR You are composing a vector dataset and wish to specify the Z field associated with the legend Use Specify ZField in the ZField menu to choose the grid dataset or Z field you require Legs he Leyg Histegram Enhancement SEY MinMax Specifying histogram stretch 6 If you are composing a grid dataset and you wish to use a histogram stretch on the data choose Histogram Enhancement from the ZField menu INTREPID displays the Stretch type dialog box Otherwise go to step 7 Intrepid MapComposition Tool 3 1 Stretch Type Stretch Parameters 2012 Intrepid Geophysics 4 Back gt INTREPID User Manual Map Legend Editor T45f 5 Library Help Top 4 Back gt 7 Select the histogram stretch type you require specify its parameters then choose OK Editing data values and attribute values 8 If you are ed2. gt gt To edit a data value in a legend Directly edit the data value in the corresponding text box gt gt To automatically set the data values in a legend to equally divide the range of existing data Choose MinMax from the ZField menu Leg Levd Histogram Enhancement SEY vinntax INTREPID will redistribute the data values 2012 Intrepid Geophysics 4 Back gt INTREPID User Manual Library Help Top Map Legend Editor T45f 6 lt 4 Back gt gt gt To edit an attribute value in a legend Double click the attribute value you wish to change INTREPID displays the corresponding Fixed Attribute Value dialog box for that attribute See Specifying map attribute values T45e for details Select the attribute value you require and choose OK Possible editing operations for each legend type The following table shows the possible data value and attribute value editing operations for each legend type Legend Manual editing of Type cutoff data values Histogram Futile INTREPID always recalculates them Yes usually essential Reset to equal range distribution using MinMax Futile INTREPID always recalculates them No Do not use MinMax here it Manual editing of attribute values Yes for fixed colour images and colour contours Not advisable for pseudocolour grey scale false colour sun angle images INTREPID uses carefully prepared colours or shades from
3. a lookup lut table will destroy your lookup data values Supported numbers of legend entries levels You can use the Legend Editor to specify level range and lookup legends for use with vector dataset fields with 4 8 16 or 32 levels instead of 8 While editing the legend for a vector dataset field choose New from the File menu INTREPID displays the New Vector Legend dialog box Number of entries for Vector Cc 4 fo 8 C 16 C 32 OK Specify the legend type and number of levels and choose OK Library Help Top 2012 Intrepid Geophysics 4 Back gt INTREPID User Manual Map Legend Editor T45f 7 Library Help Top lt Back gt INTREPID displays the New Grid Legend dialog box when you are creating a new legend for a grid Grid dataset legends can have 32 or 256 levels Intrepid MapCom Style C Level C Range Histogram C Lookup Grid no of entries oe 256 0K Specifying lookup tables palettes Until recently you could specify a lookup table Lut file containing an attribute value usually colour or grey scale palette for a grid dataset s legend by including a lut statement in the MAPCOMF file We are phasing out this method and have ceased to support it The method will still work for the time being The Legend Editor now enables you to specify a lookup table for any legend for either erid or vector datasets It uses the lookup table to
4. INTREPID User Manual Map Legend Editor T45f 1 Library Help Top 4 Back gt Map Legend Editor T45f Top Legends are defined and described in full in Map legend files R23 The interactive Legend Editor in this chapter enables you to perform the most common legend selection creation and editing processes interactively The Legend Editor enables you to interactively Select an existing legend for a composition Edit the data values and attribute values in an existing legend Configure an automatically created Level legend for displaying a vector dataset Z field Configure an automatically created Histogram legend for displaying a grid dataset Create a new legend specifying the type and the number of levels INTREPID selects the legend attribute automatically according to the context Launching the Legend Editor Library Help Top INTREPID displays the Legend Editor on the following occasions When you are specifying the display of a grid dataset and you choose a Legend button in the dialog box See Including or editing filled images from grid datasets in Including datasets in a map composition T45b and Including or editing contours from grid datasets in Including datasets in a map composition T45b When you are specifying the attributes for a Z field of a vector dataset and you choose Variable in a Fixed or Variable Attribute Value dialog box See Including or editing point datasets in Including data
5. create the attribute value for each of the 4 8 16 32 or 256 legend entries After creating the values INTREPID does not retain a link with the lookup table file To specify a lookup table file for a legend choose Load Colour Palette from the File menu in the Legend Editor Intrepid MapComposition Tool 3 2a UGE 2Field New Load SaveAs Load Colour Palette Specify the lookup table Lut file you require Clip values and scales for Level legends Library Help Top You can specify clips and logarithmic and exponential stretches for Level legends with the Legend Editor When you choose MinMax from the Zfield menu INTREPID displays the Clip and Scale Type dialog box Min 1958 932983 Wax 2006 137579 Linear Scale Logarithmic Scale C Exponetial Scale OK Cancel INTREPID automatically calculates attribute values for the legend using the clip values and the scale method Linear Logarithmic Exponential you specify Note Do not use the Clip and Scale Type dialog box for Histogram type legends You can only configure Histogram legends using the Histogram Enhancement dialog box and by specifying a lookup table 2012 Intrepid Geophysics 4 Back gt
6. iting a Level Range or Lookup legend modify the data values and attribute values as required See Editing data values and attribute values for instructions 9 Repeat or go back over steps 2 8 as required until you are satisfied with the legend specifications 10 If you wish to save the legend using a name of your choice choose SaveAs from the File menu and specify the file name for the legend If you do not wish to choose the file name INTREPID will save the current legend after you choose OK 11 If you wish to create or edit on another legend repeats steps 2 10 If you are creating or editing legends for purposes outside the current context make sure you create or load the legend required for the current context immediately before you exit from the Legend Editor 12 When you have completed your work with Legend Editor choose OK If you have not already saved the current legend under a name of your choice INTREPID will save the legend under a default file name untitled99 leg where 99 is one or two numeric digits 1 2 e g untitled5 leg INTREPID will specify the current legend for the current context in the open Map Composition dialog box Editing data values and attribute values Library Help Top You can edit the data values and attribute values in some legends For some legends you can also automatically set the data values to divide equally the range or set of data values in the grid dataset or Z field
7. ppropriate legend type and number of levels You can create and edit one or more legends during the Legend Editor session based on the current dataset or some other dataset INTREPID will return and use the legend that is current at the time that you exit to Map Library Help Top Composition 2012 Intrepid Geophysics 4 Back gt INTREPID User Manual Map Legend Editor T45f 3 Library Help Top lt 4 Back gt gt gt To use the Legend Editor Intrepid MapComposition Tool 3 1 7 File ZField ZField gridl Legend untitled2 Levels 256 Style MinMax High Clip Low Clip 1 Choose A Legend button from a grid dataset composition dialog box OR e Variable from a Fixed or Variable Attribute Value dialog box INTREPID displays the Legend Editor window with a default legend specification according to the context Create new legend or load existing legend INTREPID will create a new default legend as soon as it displays the Legend Editor window 2 If you wish to load an existing legend file choose Load from the File menu Fite ZField Library Help Top 2012 Intrepid Geophysics 4 Back gt INTREPID User Manual Library Help Top Library Help Top Map Legend Editor T45f 4 lt 4 Back gt If you wish to start a new legend perhaps of a different type choose New from the File menu INTREPID displays the new legend dialog box
8. sets in a map composition T45b and Including or editing line datasets in Including datasets in a map composition T45b and Specifying map attribute values T45e When you are specifying the legend file for a legend object you simply specify the name of an existing legend file rather than use the Legend Editor See Including or editing a legend object in Including and editing map annotations T45c 2012 Intrepid Geophysics 4 Back gt INTREPID User Manual Library Help Top Default legend types Map Legend Editor T45f 2 lt 4 Back gt When INTREPID first displays the Legend Editor it will create a new legend appropriate to the dataset and display style concerned The following table lists the default legend types and corresponding attributes for each case Grey Scale Histogram Fixed Colour Histogram Grid Sun Angle Histogram False Colour Histogram including intensity Histogram Symbol size Level Display style Legend Type Point Legend Attribute lt colour gt lt colour gt lt colour gt lt colour gt lt number gt lt colour gt lt colour gt lt markersize gt lt symbol gt lt colour gt 256 levels are only used as a guide INTREPID interpolates between the levels to create a continuous gradation Using the Legend Editor When you start the Legend Editor from Map Composition INTREPID will if possible load it with the grid dataset required and choose an a
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