plotDisplayColor

Gateway plotting routine for processor window color analysis

  plotDisplayColor(vci,dataType)

 The user selects a region of a display image.  This routine plot the distribution of
 color values of various types.  

  Current types of data plots

       {'rgb'}               - Digital rgb values
       {'chromaticity'}      - Display chromaticities
       {'luminance'}         - Display luminance
       {'cielab'}            - CIELAB values w.r.t the image white point
       {'cieluv'}            - CIELUV values w.r.t. the image white point.

 The selected values are stored in the userdata area of the plot window,
 that is, get(gcf,'userdata') will return the values.

 If vci is empty, then the currently selected processor data (vci) is
 used.

 Examples:
  vci = vcGetObject('vci');
  plotDisplayColor(vci,'xy'); userData = get(gcf,'UserData');

  plotDisplayColor([],'luminance')
  plotDisplayColor([],'cielab')

 Copyright ImagEval Consultants, LLC, 2005.