creates/activates a figure
h = figure(varargin)
See examples below for the input arguments
figure handle
figure() : creates a new window (property/value pairs are allowed or activates an exisiting figure :
fig('color',[1 1 1]);
fig('colormap','hot'); fig('colormap',[0 0 0;1 1 1]); fig(winNum); // activates the window winNum