	This Module recalculates the xoffset, yoffset and scale of the color
legend accoding to the size of the graph. An optinal field is ported in to
allow the users to reset of range of color legend according to the max/min 
value of the field.

	This module belongs to a group of modules submitted to the Inter- 
national AVS Center for displaying points, lines and polygons over a map of the
United States. The group of the modules includes:

	AFSextract: 	 	Extracting AFS Format Data
	AMSextract:		Extracting AMS Format Data
	LBFextract:		Extracting Link Base Mobile Data
	field_to_points:	Plot 3D points with color mapping
	field_to_lines:		Plot 3D lines with color mapping
	field_to_polygons:	Plot 3D polygons with color mapping
	getmap:			Plot political boundary of states and
				countys in the United State
	geomreset:		Reset and normalize the geometry viewer
				automatically
	zoomer:			A driver to allow zoom in and out to a 
				particular geographical area
	resetlegend:		To reset the position and size of ithe color 
				legend if used


	An example network is shown below:

		       zoomer
			||||
			-------------	
generate colormap       ||||    |||||
   |			|||| 	|||||
   |    	reset legend	getmap
   |            | | | 		   |
   ------------	color legend       |	
		     |		   |
	             -----------geometry viewer
				   |
	 			geom reset 


	Contact person: Jeff Wang, MCNC/NCSC, (919)-248-9242
