# getColorMap

Return default k-Wave color map.

## Syntax

    cm = getColorMap()
    cm = getColorMap(num_colors)

## Description

`getColorMap` returns the default color map used for display and visualisation across the k-Wave Toolbox. Zero values are displayed as white, positive values are displayed as yellow through red to black, and negative values are displayed as light to dark blue-greys. If no value for `num_colors` is provided, `cm` will have 256 colors.