* +-======-+ 
*  Copyright (c) 2003-2007 United States Government as represented by 
*  the Admistrator of the National Aeronautics and Space Administration.  
*  All Rights Reserved.
*  
*  THIS OPEN  SOURCE  AGREEMENT  ("AGREEMENT") DEFINES  THE  RIGHTS  OF USE,
*  REPRODUCTION,  DISTRIBUTION,  MODIFICATION AND REDISTRIBUTION OF CERTAIN 
*  COMPUTER SOFTWARE ORIGINALLY RELEASED BY THE UNITED STATES GOVERNMENT AS 
*  REPRESENTED BY THE GOVERNMENT AGENCY LISTED BELOW ("GOVERNMENT AGENCY").  
*  THE UNITED STATES GOVERNMENT, AS REPRESENTED BY GOVERNMENT AGENCY, IS AN 
*  INTENDED  THIRD-PARTY  BENEFICIARY  OF  ALL  SUBSEQUENT DISTRIBUTIONS OR 
*  REDISTRIBUTIONS  OF THE  SUBJECT  SOFTWARE.  ANYONE WHO USES, REPRODUCES, 
*  DISTRIBUTES, MODIFIES  OR REDISTRIBUTES THE SUBJECT SOFTWARE, AS DEFINED 
*  HEREIN, OR ANY PART THEREOF,  IS,  BY THAT ACTION, ACCEPTING IN FULL THE 
*  RESPONSIBILITIES AND OBLIGATIONS CONTAINED IN THIS AGREEMENT.
*  
*  Government Agency: National Aeronautics and Space Administration
*  Government Agency Original Software Designation: GSC-15354-1
*  Government Agency Original Software Title:  GEOS-5 GCM Modeling Software
*  User Registration Requested.  Please Visit http://opensource.gsfc.nasa.gov
*  Government Agency Point of Contact for Original Software:  
*  			Dale Hithon, SRA Assistant, (301) 286-2691
*  
* +-======-+ 
function vpage (args)

*************************************************************
*****                                                   *****
*****  Usage:  vpage xloc yloc xmax ymax <ytop>         *****
*****                                                   *****
*************************************************************

xloc = subwrd(args,1)
yloc = subwrd(args,2)
xmax = subwrd(args,3)
ymax = subwrd(args,4)
ytop = subwrd(args,5)
if( ytop = "" )
ytop = 0.5
endif

'set vpage off'
'getinfo page'
pagex = subwrd(result,1)
pagey = subwrd(result,2)-ytop


 'set mproj latlon'
*'set mproj scaled'
*diff  = (pagex-pagey/1.75)*0.5
*pagex = pagey/1.65

dx = pagex/xmax
dy = pagey/ymax

x1 = (xloc-1)*dx
x2 = (xloc-0)*dx
y2 =  pagey - (yloc-1)*dy
y1 =  pagey - (yloc-0)*dy

if( x1 < 0 )
x1 = 0
endif
if( y1 < 0 )
y1 = 0
endif
if( x2 > pagex )
x2 = pagex
endif
if( y2 > pagey )
y2 = pagey
endif

say 'vpage 'x1' 'x2' 'y1' 'y2
'set vpage 'x1' 'x2' 'y1' 'y2
'set grads off'