DATEM - 10 August 2001
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plot_pgm

	The "c2grads" directory contains a Fortran 90 program
	that will convert the merged measured and predicted
	files output from the "statmain" program to GrADS
	format.  In addition, the program also creates all
	required GrADS control files.  GrADS can then be used
	to contour the measured and model results.

	The model predictions and measurements can be displayed for 
	any sampling period by using the merged output file created by
	the statmain program with the -o flag set.  GrADS (Grid 
	Analysis and Display System) formatted is created by c2grads.
	GrADS is distributed free http://grads.iges.org/grads).  An 
	"X" server is also required.  Versions of GrADS are available 
	for UNIX, Linux, PCs running Windows 95/NT or DOS. 


GrADS conversion steps

1) Convert Merged Station file to Grads format:

	c2grads [-d{directory} -m{variation} -t{tracer}]

	Creates:	merged.dat	->grads binary file
			merged.ctl	->grads definition file
			merged.gs	->specific plot script
			dummy.ctl	->dummy file for gridding

2) Run stnmap from command line to created merged.map file:

	stnmap -i merged.ctl


3) Start Grads and then from the command line:

	ga-> exec makeplot.txt
	ga-> wi merged.gif		or: ga-> print  (to merged.mif)
	ga-> quit

4) Additonal print options from command line:

	gxps -i merged.mif -o merged.ps -c [color option]