pturner@ogccse.ogc.edu (Paul Turner) (09/16/89)
Announcing the availability of grtool, a data/function plotting program
for Sun's running SunOS 4.0. I'm calling this release a Beta test.
Features:
o Linear and polynomial regression
o Running averages
o Histograms
o Numerical integration and differentiation
o Fourier spectrum (DFT by FFT or by definition)
o Auto and cross correlation
o Transformations *,/,-,+,^, +built in functions & constants
(using this and linear regression gives exponential and power
fits). Uses a yacc grammer. Like y=(x+1)*cos(2*PI*x/10)+1
o Labels (x-axis, y-axis, title, subtitle)
o Legends - placed anywhere on plot
o Strings, rotated, sized (but not typed on the canvas).
Subscripts, superscripts, and special symbols (I used
the Hershey fonts).
o Boxes and lines
o Parameter files for saving a given plot setup
o Batch mode for unattended plots
o 15 sets, size limited by memory - easy to add more,
15 is about all I've ever needed.
o Linear, log-linear, linear-log, log-log plots
o Many symbols, grid lines, spikes for spectral plots
Sets can have both symbols and linestyles.
o Linestyles, and thickness (in lieu of color).
o Adjustable tick mark density, inward or outward pointing.
o Autoscale
o Flip x <-> y
o Locate, delete individual points
o Set world and viewport
o Pan and zoom
o Can use mouse to set viewport
o Locator (reports mouse position in world coordinates)
o Reads ASCII data - X Y 1 point per line,
X Y1 Y2 ..., and from pipes.
o reports Mean, std. dev., min, max of each set
o Error bars, equal or unequal, one or two sided, along X or Y
(max 7 sets with error bars).
Hardcopy support is HPGL and PostScript. There is a hack for HP laserjets
using rasterfiles. Grtool is quite capable of producing (and has produced
many) publication quality graphs (which isn't saying much, I know).
Thanx to Jim Hudgens for the PostScript driver.
In all modesty, I believe grtool to be nearly as functional as TempleGraph
and with the inclusion of source code perhaps more so. Grtool has a distinct
price advantage.
Grtool may be acquired via anonymous ftp from cse.ogc.edu [129.95.40.2] in
pub/grtool/grtool.tar.Z (set type binary). If you don't have Internet
access I'd be happy to send a shar archive, tapes for hardship cases only
please.
I call this version V1.0 Beta test, it will not run under SunOS 3.5 or less.
Comments regarding this program would be appreciated.
--Paul
Paul J. Turner
Department of Environmental Science and Engineering
Oregon Graduate Center
19600 NW von Neumann Dr.
Beaverton, OR 97006-1999
pturner@ese.ogc.edu
(503) 690-1043
--
Paul J. Turner Department of Env. Sci. and Eng.
tektronix!ogccse!pturner Oregon Graduate Center
pturner@cse.ogc.edu 19600 NW Von Neumann Dr.
(503) 690-1043 Beaverton, OR 97006-1999