`prism`

Colormap that repeats the six colors red, orange, yellow, green, blue and violet.

Category: Graphics > Formatting and Annotation

Syntax

map = prism

Returns a prism colormap with the default number of rows.

map = prism(m)

Returns a prism colormap with m rows.

Description

The sequence of six spectral colors is repeated until m rows are filled. Because neighboring values get very different colors, the map exposes small differences and bands in data, such as the contour lines of a smooth surface, but it is not suitable to show magnitudes.

Input arguments

m: Number of colors, a nonnegative integer.

Output arguments

map: m-by-3 matrix of RGB values between 0 and 1.

Example

Four colors

prism(4)

Output

ans = 4×3

    1.0000         0         0
    1.0000    0.5000         0
    1.0000    1.0000         0
         0    1.0000         0

prism