addcolor add new colors to the current colormap

## Syntax

    new=addcolor(c)

## Arguments

new

  ids of the colors defined in c in the new color table.

c

  matrix with 3 columns, RGB color definition.

## Description

`addcolor` adds new colors given in the `c` argument to the current colormap. `c` must be a matrix with 3 columns `[R G B]``R` is red component, `G` is green component, `B` is blue component). Each entry in `c` must be a non negative number less or equal to 1.

The ids of the new colors are returned into `new`.

If a color defined in `c` is already present in the current colormap it is not added.

## Examples

    plot3d();
    h = gcf();
    h.color_map = jetcolormap(16);
    addcolor(name2rgb('grey')/255);

plot3d(); h = gcf(); h.color_map = jetcolormap(16); addcolor(name2rgb('grey')/255);

## See also

- colormap
- name2rgb