Return the RGB values for symbols in a theme's legend

Summary

This document provides a sample Avenue script that will create a table containing the labels and RGB values for each classification in the active theme.

Procedure

1. Open a new script window.
   
   
   A. Activate the Project window.
   B. Click the Scripts icon.
   C. Click New.
   
   
2. Copy the following code into the new script window.
   
   

   Code:
   theview = av.getactivedoc 
   thetheme = theview.getactivethemes.get(0) 
   theleg = thetheme.getlegend.clone 
   
   aFilename =Filedialog.put("rgb.dbf".asFilename, "*.*", "Create Attribute Table") 
   thevtab = vtab.makenew(afilename, dbase) 
   
   thelblfld = field.make("AVlabel", #FIELD_CHAR, 20, 0) 
   therfld = field.make("R", #FIELD_DECIMAL, 5, 0) 
   thegfld = field.make("G", #FIELD_DECIMAL, 5, 0) 
   thebfld = field.make("B", #FIELD_DECIMAL, 5, 0) 
   thevtab.seteditable(true) 
   thevtab.addfields({thelblfld, therfld, thegfld, thebfld}) 
   thenum = (theleg.getnumclasses - 1) 
   for each i in 0..thenum 
   thevtab.addrecord 
   thelist = theleg.returnclassinfo(i) 
   thelbl = thelist.get(0) 
   thesym = thelist.get(2) 
   thevtab.setvalue(thelblfld, i, thelbl) 
   thergblist = thesym.getcolor.getrgblist 
   thevtab.setvalue(therfld, i, thergblist.get(0)) 
   thevtab.setvalue(thegfld, i, thergblist.get(1)) 
   thevtab.setvalue(thebfld, i, thergblist.get(2)) 
   end 
   thevtab.seteditable(false) 
   thetable = table.make(thevtab) 
   thetable.getwin.open 
   av.purgeobjects 
   

   
   
3. Click the Compile button.
   
   
4. Make the View and desired Theme active.
5. Make the Script window active.
6. Click the Run button.