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Loading Default Color Tables

IDL uses color tables to associate pixel values in indexed images with specific RGB color values.

To define a color table in graphics functions such as IMAGE and MAP, use the RGB_TABLE property. If no color table is defined, these graphics display in gray scale. The color tables on the right are ColorBrewer schemes.

IDL provides predefined color tables, each with an index value as shown in the following table.

	Name	Sample			Name	Sample
0	Black-White Linear			41	CB-Accent
1	Blue-White Linear			42	CB-Dark2
2	Green-Red-Blue-White			43	CB-Paired
3	Red Temperature			44	CB-Pastel1
4	Blue-Green-Red-Yellow			45	CB-Pastel2
5	Standard Gamma-II			46	CB-Set1
6	Prism			47	CB-Set2
7	Red-Purple			48	CB-Set3
8	Green-White Linear			49	CB-Blues
9	Green-White Exponential			50	CB-BuGn
10	Green-Pink			51	CB-BuPu
11	Blue-Red			52	CB-GnBu
12	16 Level			53	CB-Greens
13	Rainbow			54	CB-Greys
14	Steps			55	CB-Oranges
15	Stern Special			56	CB-OrRd
16	Haze			57	CB-PuBu
17	Blue-Pastel-Red			58	CB-PuBuGn
18	Pastels			59	CB-PuRd
19	Hue Sat Lightness 1			60	CB-Purples
20	Hue Sat Lightness 2			61	CB-RdPu
21	Hue Sat Value 1			62	CB-Reds
22	Hue Sat Value 2			63	CB-YIGn
23	Purple-Red + Stripes			64	CB-YIGnBu
24	Beach			65	CB-YIOrBr
25	Mac Style			66	CB-BrBG
26	Eos A			67	CB-PiYG
27	Eos B			68	CB-PRGn
28	Hardcandy			69	CB-PuOr
29	Nature			70	CB-RdBu
30	Ocean			71	CB-RdGy
31	Peppermint			72	CB-RdYiBu
32	Plasma			73	CB-RdYiGn
33	Blue-Red 2			74	CB-Spectral
34	Rainbow 2
35	Blue Waves
36	Volcano
37	Waves
38	Rainbow 18
39	Rainbow + White
40	Rainbow + Black

Also see Color Tables in Direct Graphics.