NAME
     UCD Node Contour - Create an array of floating point RGB values, 
     one color for each node in an unstructured cell data set.
     (Replacement module for ucd contour)

SUMMARY
     Name	   UCD Node Contour

     Availability  International AVS Center

     Type	   mapper

     Inputs	   ucd structure
		   colormap

     Outputs	   field 1D 3-vector real

     Parameters	   node	data --- choice [one for each scalar nodal datatype]

DESCRIPTION
   This module is a replacement for ucd-contour as supplied by AVS Inc.
   AVS Inc's ucd-contour module turns zones of out-of-range data black,
   rather than clamping it to min and max values as the user often
   prefers.  This module is intended as a functional equivalent of
   ucd-contour, but which clamps out of range values to min and max
   colors.  This allows more detailed coloring of data within the
   absolute range of the entire UCD without turning any of it black.

   UCD Node Contour is used to create a color contour of a
   UCD structure.  Its output is passed to ucd-to-geom to produce
   a colored representation of a UCD structure. UCD Node Contour
   associates a color with each node of a UCD structure.

INPUTS

     UCD structure (required)
	  The input structure is in AVS	unstructured cell data (UCD)
	  format.

     Colormap (optional)
	  An AVS colormap. ucd contour maps node values	in the input
	  structure to colors in the colormap.  If no colormap is
	  supplied, a greyscale ramp will be used.

PARAMETERS

     node data
	  Selects which	of the node's data components to display. A set	of
	  radio	buttons	shows the label	attached to each node data
	  component. Before the	module receives	data, the default "<data
	  1>, <data 2>,	..." is	displayed.

OUTPUTS

     Color Field (field	1D 3-vector real)
	  The output field is a	1 dimensional array of color values. There
	  is one color for each	node in	the input UCD structure. Each color
	  value	is a triple of floating	point numbers representing red,
	  green, and blue.