Spring 1993 Material from Tom Worlton

[.GPLOT]
1-June-1993
GPLOT is a library of high-level subroutines for use with DEC GKS graphics.
You will need DEC GKS 5.0A full-function software to develop programs using
this library.  DEC GKS 5.0A is incompatible with older versions of DEC GKS,
but should be quite compatible with DEC GKS on Alpha.  If you are still
using DEC GKS 4.X, you may need to use an older version of Gplot.  DEC GKS
Version 5.0A combines DEC GKS and DEC GKS 3D.  The Fortran binding include
file name has been changed. 

New features added to GPLOT with this release include a new color setup
routine and a print screen routine for use with the Motif workstation.
There is also support for Workstation type 233 (Motif Widget).  To use
workstation type 233 you need to create a Motif widget and define the
logical "MYWIDGET" to point to that widget ID number. See DEFCONID.FOR and
VMSLIB.FOR for information on using these logicals.  DEFCONID is a new
routine for setting the output device.  In previous versions of GPLOT the
GKS$CONID logical name was defined after selecting the workstation type. 
In DEC GKS 5.0A you cannot use this logical name if you are going to open
more than one workstation since GKS$CONID is interpreted when GKS is
opened.  A GKS escape function is now used to set the workstation
connection. Executables developed with this GPLOT library can only be run on
systems with DEC GKS 5.0A full development or run-time licenses. 

EZPLOT is an interactive plotting program which uses this library.  It was
written by one of our users and is made available here in executable form
only.  Two sample EZPLOT plots (type *. SAV) ire included in [GPLOT]. 
GKSPOST is a postprocessor for plotting GKS metfiles. 

GPLOT includes the following types of routines:
	Linear and logarithmic axis routines
	routines for drawing curves with/without error bars
	curve interpolation routines
	Legend creation routines
	Enhanced text output routines (superscript, font-switching, etc.)
	contour plot routines
	3D-surface plot routines
	routines for vectors with arrowheads
	bar chart routines
	Device-selection menu routines/automatic printing
	Routine for interpreting GKS metafiles


[.MODIFY]
15-DEC-1992
This version of MODIFY has been revised to run on Alpha-AXP OpenVMS
systems and contains some improvements over the initial version which has
been part of the VMS startup set.  It allows longer record lengths (up to
512 bytes) and has an F77 qualifier for changing Fortran source code
format from tab code to standard and replacing exclamation point comment
delimiters and debug statement delimiters, and/or removing all comments. 

There was a bug in the detabbing of F77 files in the version of modify on 
the 1991 DECUS tape.  The bug has been fixed in this version.

	
	Tom Worlton
	Intense Pulsed Neutron Source Division
	Argonne National Laboratory
	Argonne, IL 60439

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