colormap

View and set current colormap.

Syntax

• colormap(map)
• colormap(target ,map)
• cmap = colormap()
• cmap = colormap(target)

Input argument

• map - colormap name, 'default' or RGB triplets (matrix).
• target - Target: figure or axes.

Output argument

• cmap - Colormap values: RGB triplets (matrix).

Description

colormapallows to view and set the colormap used into a plot.

Examples

f = figure()
x = linspace(-1, 1, 1024)' * ones(1, 1024);
y = x';
Z = exp(-(x .^ 2 + y .^ 2) / 0.4);
imagesc(Z);
colormap('summer')

f = figure()
x = linspace(-1, 1, 1024)' * ones(1, 1024);
y = x';
Z = exp(-(x .^ 2 + y .^ 2) / 0.4);
imagesc(Z);
colormap('gray')

f = figure()
x = linspace(-1, 1, 1024)' * ones(1, 1024);
y = x';
Z = exp(-(x .^ 2 + y .^ 2) / 0.4);
imagesc(Z);

map = [0 0 0.3;
    0 0 0.4;
    0 0 0.5;
    0 0 0.6;
    0 0 0.8;
    0 0 1.0];
colormap(map)

See also

rgbplot.

History

Author

Allan CORNET