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PGPLOT version 5.2.0
This version includes bug fixes, improvements in existing routines, new
routines, and new device drivers. All changes are intended to be compatible:
existing programs should run unchanged and produce the same output (except
for a few bug fixes).
Tested Systems
Version 5.2.0 has been tested with the following operating systems and
compilers. Drivers tested include: GI, GL, NU, PG, PP, PS, TT, TK, VT, WD,
X2, XM, XW (but not all combinations of drivers and systems have been tested
exhaustively).
* Solaris 2.5.1 (SunOS 5.5.1), Sun Fortran (f77) 3.0.1, Sun C (cc) 3.0.1
(tested on SPARC Ultra-1) [sol2 f77_cc].
* Solaris 2.5.1 (SunOS 5.5.1), GNU Fortran (g77) 0.5.18, GNU C (gcc)
2.7.2.1 (tested on SPARC Ultra-1) [sol2 g77_gcc].
* SunOS 4.1.3, Sun Fortran (f77), GNU C (gcc) (tested on Sun SPARCStation
2) [sun4 f77_gcc].
* OpenVMS AXP V6.1, DEC FORTRAN V6.2, DEC C V4.0, DECwindows Motif 1.1
(tested on DEC 3000/M600).
* OpenVMS VAX V6.1, DEC FORTRAN V6.2, DEC C V4.0, DECwindows Motif 1.2
(tested on VAXstation 4000-90).
New PGPLOT routines
The following routines are documented in the list of subroutines, and will
be explained more fully in the manual.
pgaxis
Draw a linear or logarithmic axis (more options will be added in later
versions).
pgconf
Shade area between two contours.
pgerr1
Draw a single error bar (useful for systems which cannot pass a scalar
to a routine that expects an array).
pgpt1
Draw a single graph marker (useful for systems which cannot pass a
scalar to a routine that expects an array).
pgsclp, pgqclp
Set/query clipping status (used by PGBOX and PGAXIS to ensure that axes
are not clipped against the viewport).
pgqdt, pgqndt
Inquiry routines used to determine the list of device types available
in a PGPLOT installation; useful for building menus, etc.
pgscrl
Scroll a rectangular region of the screen; useful for making animated
displays without redrawing the whole screen; currently only supported
on X Window and related devices.
pgtick
Used by pgaxis to draw single labelled tick mark; may be called
directly, e.g., for special non-linear axes.
Modified PGPLOT routines
Internal changes that do not affect the API are not listed. Several routines
have been modified to improve their descriptions or improve speed.
pgctab
The behavior of the arguments "brightness" and "contrast" has been
changed slightly. The color indices set by this routine will be
slightly changed from earlier versions of PGPLOT, except when these
arguments have their "default" values (0.5 and 1.0). The routine is
designed for use in an interactive environment in which the user can
explore the effect of changing these parameters; in the new version
they behave somewhat more as one might expect.
pgqinf
Added ability to determine whether a device supports pgscrl.
New device drivers
pgdriv (device type /PGMF)
Creates a disk file in a private PGPLOT Metafile format. This is a
portable file format using only printable ASCII characters. It is
intended to replace the old metafile (created by MFDRIV) which uses a
binary, machine-dependent format. Subroutines are being prepared to
allow a PGPLOT program to read and display files written in this format
(an example program is provided in directory pgplot/pgmf). The driver
uses only standard Fortran-77 and so should be portable to all
operating systems on which PGPLOT is supported.
tkdriv (device type /XTK)
For plotting in PGPLOT TCL/Tk widgets under the X Window System (UNIX
systems only). An example program is included. Feedback on this driver
would be appreciated: send e-mail to Martin Shepherd
(mcs@astro.caltech.edu).
Modified device drivers
lxdriv
LaTeX picture environment driver. Fixed bug: picture size can now be
adjusted with PGPAP. (Note: The PostScript driver gives much better
results than this one, if your LaTeX environmant allows PostScript
files to be included in LaTeX documents.)
xmdriv
Motif widget driver. Added support for scrolling; improved cursor
handling; bug fixes.
xwdriv
X Window driver. Added support for scrolling; bug fixes. The PGPLOT
cursor can now be moved horizontally and vertically with the keyboard
arrow keys, which can be more precise than using the mouse. Each
keystroke moves the cursor by one pixel, or 10 pixels if the SHIFT key
is depressed.
Deprecated drivers
The following drivers are probably no longer useful, and their use is
discouraged. They have been moved from pgplot/drivers to pgplot/drivers/old.
If you still need any of these drivers, please contact Tim Pearson.
imdriv, vidriv
Imagen printers.
irdriv
Silicon Graphics workstations: use the X-window drivers instead.
svdriv
Sun workstations running SunView: use the X-window drivers instead.
Changes to installation procedures
The installation instructions have been rewritten. There are two changes you
should be aware of:
1. All the UNIX configuration files (pgplot/sys_*/*.conf) have been
modified to add new parameters that may be required for the new widget
drivers. If you have made modifications to configuration files and
haven't sent them back to Tim Pearson, you will need to change them
again.
2. If you need to modify a configuration file for your system, it is now
recommended that you make a new configuration file called "local.conf"
in the build directory, by editing a configuration file for a related
system. makemake will now read this file if you do not specify a
configuration on the makemake command line.
New and modified demonstration programs
pgdemo1
Now uses new routine pgpt1 when a single marker is to be drawn.
pgdemo2
Modified text-sample page.
pgdemo3
Added demo of new routine pgconf. Demo of pgvect has been moved to
pgdemo15.
pgdemo4
Demo of pgimag: modified to use slightly more realistic transformation
matrices, to show the use of pgctab, and to show how the color palette
may be modified interactively.
pgdemo6
Now uses new routine pgpt1 when a single marker is to be drawn.
pgdemo13
Now uses new routine pgpt1 when a single marker is to be drawn.
pgdemo15
New demo for routine pgvect (formerly in pgdemo3).
pgdemo16
New demo for bar and column charts. This uses a general-purpose
subroutine that may get included in a future version of pgplot,
although not exactly in this form.
pgdemo17
New demo, from Dr Martin Weisser, showing animated rotation of a
molecular structure.
Changes to C binding
The program that creates the PGPLOT C binding (pgbind) can now generate a
binding for MS-Powerstation (Windows).
----------------------------------------------------------------------------
Tim Pearson, California Institute of Technology, tjp@astro.caltech.edu
Copyright 1997 California Institute of Technology
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