% -*- texinfo -*-
% @deftypefn {Function File} rgbplot (@var{map})
% @deftypefnx{Function File} @var{h} = rgbplot (@var{map})
% Plot a given color map.
% The matrix @var{map} must be a @math{M} by 3 matrix. The three columns of the
% colormap matrix are plotted in red, green, and blue lines.
%
% If an output is requested, a graphics handle to the plot is returned.
% @end deftypefn