$Id: bsc_help4.txt,v 1.1.1.2 1992/05/12 22:10:06 carr Exp $
PV-WAVE BASIC FUNCTIONS DEMONSTRATION

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SECTION 4.   (4-D DATA DISPLAY)
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In this section of the demo, two "ASCII Unformatted" data
files are used, each containing a 60x40 grid of Z values.

The PV-WAVE code to read these data files into PV-WAVE
variables is as follows :

   ;*************************************************************
   elev_data = Fltarr(60, 40)
   Openr, 1, !!Data_Dir + 'pikeselev.dat'
   Readf, 1, elev_data
   Close, 1

   snow_data = Intarr(60, 40)
   Openr, 1, !!Data_Dir + 'snowpack.dat'
   Readf, 1, snow_data
   Close, 1
   ;*************************************************************

The following are some permutations of the PV-WAVE "Shade_Surf"
command that can be used to display a 3-D surface shaded by a
fourth variable.

   ;*************************************************************
   Shade_Surf, snow_data, Shades=elev_data
   Shade_Surf, elev_data, Shades=elev_data
   Shade_Surf, elev_data
   ;*************************************************************

