rgbplot - Plot colormap - MATLAB (original) (raw)

Main Content

Syntax

Description

rgbplot([map](#d126e1559172)) plots the red, green, and blue intensities of the specified colormap.

example

Examples

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Plot a Predefined Colormap

Plot the parula colormap, and display a colorbar as a visual reference.

rgbplot(parula) hold on colormap(parula) colorbar('Ticks',[])

Plot a Custom Colormap

Create a custom colormap and plot it. Then display a colorbar as a visual reference.

r = (0:.1:.9)'; g = r.^1.8; b = r.^2.1; mymap = [r g b]; rgbplot(mymap) hold on colormap(mymap) colorbar('Ticks',[])

Input Arguments

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map — Colormap

three-column matrix of RGB triplets

Colormap to plot, specified as a three-column matrix of RGB triplets. An RGB triplet is a three-element row vector whose elements specify the intensities of the red, green, and blue components of a color. The intensities must be in the range [0, 1]. For example, here is a colormap that contains five colors:

map = [0.2 0.1 0.5 0.1 0.5 0.8 0.2 0.7 0.6 0.8 0.7 0.3 0.9 1 0];

This table lists the RGB triplet values for common colors.

Alternatively, you can create the matrix by calling one of the predefined colormap functions. Call the function as the input argument to thergbplot function. For example, this command plots the parula colormap.

Data Types: double | single

Version History

Introduced before R2006a