IDL provides predefined color tables, each with an index value as shown in the following table. At any time during your IDL session, you can pull up a widget. now and explore other helpful examples for using IDL, ENVI and other products. With the COLORTABLE function, you can specify the parameters to create a ctable = COLORTABLE([[,,],[,,],[0,,0]], NCOLORS. 29 items HLS, Creates color table in Hue, Lightness, Saturation color system. MODIFYCT Procedure, Saves modified color tables in the IDL color table file.
Although you can define your own color tables, IDL provides predefined color lookup tables. (LUTs). Each color table contained within this routine is specified. IDL Color Tables 0 B-W LINEAR 1 BLUE/WHITE 2 GRN-RED-BLU-WHT 3 RED TEMPERATURE 4 BLUE/GREEN/RED/YELLOW 5 STD GAMMA-II 6 PRISM 7. IDL reads the color table at that index and obtains the red, green, and blue values that make up that particular color triple (red, green, blue).
Constructing a Color Table in IDL. QUESTION: Can you show me how to construct a color table in IDL? ANSWER: Several people have asked. How to configure a UNIX computer to work with color in IDL . red, green, and blue color values associated with that index in the color table. We see now that. Although you can define your own color tables, IDL provides 41 pre-defined color lookup tables (LUTs). Each color table contained within this routine is specified.