PGPLOT version 5.0.3

Tested Systems

Version 5.0.3 has been tested with the following operating systems and compilers. Drivers tested include: GI, GL, NU, PP, PS, TT, VT, WD, X2, XW (but not all combinations of drivers and systems have been tested exhaustively).

HP-UX version A.09.01, HP Fortran/9000 (fort77), HP C (c89).
OpenVMS AXP V6.1, DEC FORTRAN V6.2, DEC C V4.0 (tested on DEC 3000/M600).
OpenVMS VAX V6.1, DEC FORTRAN V6.2, DEC C V4.0 (tested on VAXstation 4000-90). Note: the PGDISP server cannot be compiled on this system.
Solaris 2.4 (SunOS 5.4), Sun Fortran 2.0.1, Sun C 2.0.1 (tested on SPARCstation 10).
SunOS 4.1.4, Sun Fortran 1.3.1, cc (tested on SPARCstation IPX). Note: the C-binding cannot be compiled with this non-ANSI C compiler.
SunOS 4.1.4, Sun Fortran 1.3.1, GNU gcc v2.7.0 (tested on SPARCstation IPX).
IRIX 6.0.1, Power Indigo2, f77 -mips4, cc -64 (reported by Tomasz Plewa).

Changes in Version 5.0.3

Routine PGQCS has a new option to determine the character height in world coordinates, and a bug that would give wrong values on devices with non-square pixels has been corrected.

Routine PGTBOX has a new option `X' to label the HH field modulo 24. Thus, a label such as 25h 10m would come out as 1h 10m.

Graphical output from the GIF and PPM drivers can now be directed to the standard output by specifying a file name ``-'', e.g., ``-/gif''. This allows output to be piped to a viewing program, e.g., ``pgprog | xv -''. This will only work for single-page plots.

In this version I have started work to change the character coding of PGPLOT text strings from US-ASCII to ISO Latin-1. Unfortunately I do not have digitized versions of most of the required glyphs, so this work is not complete. Programs which use characters with decimal codes in the range 128-255 will now display differently: in most cases, the glyph will be an approximation to the ISO Latin-1 character (e.g., an unaccented letter instead of the correctly accented one).

A new escape sequence, \., has been added for a centered dot (·).

A bug has been fixed that affected PostScript and possibly some other drivers: they would ignore a change to the color-representation of the currently selected color index.

Some changes have been made in the way PGPLOT writes BoundingBox comments in PostScript files.

Two bugs in polygon fill have been fixed: PGPOLY would issue an error message about a polygon with less than 3 vertices on some occasions when a polygon was completely outside the viewport; and polygon fill was ignored completely on some devices if the y-axis ran downwards instead of upwards.

There is one new driver (HGDRIV), for HP-GL/2 devices.

Minor corrections have been made in several other subroutines and text files.

pgplot

aaaread.me: Changed version number to 5.0.3.
copyright.notice: Changed version number to 5.0.3.
drivers.list: Added HGDRIV.
install.txt: Updated.
makehtml: This is a perl script used for making the html documentation file. Some systems had trouble executing this script. I have now modified it to invoke perl by the #! mechanism. You may have to modify the first line of the script to specify the location of perl on your system.
makemake: Now includes the ``non-standard'' routines in the documentation files (pgplot.doc, pgplot.html). Also modified the non-standard routines to get cross-references to their aliases in the HTML file. The list of include file dependencies is now generated by searching the code. Special code for the Motif widget has been added. Added HGDRIV.
ver503.txt: (New file.) Release notes.

pgplot/drivers

hgdriv.f: (New file.) Driver from Colin J. Lonsdale for HP-GL/2 devices. I have not tested this. It is an alternative to GLDRIV: you should probably not include both in your PGPLOT configuration.
lxdriv.f: Removed a non-standard DATA initialization.
psdriv.f: Changed interpretation of environment variables PGPLOT_PS_BBOX and PGPLOT_PS_DRAW_BBOX; see the documentation.
xwdriv.c: Fix an error in display of large images.
gidriv.f, ppdriv.f, wddriv.f: Added comments to indicate what must be changed on operating systems like OSF/1 that use 64-bit addresses.

pgplot/examples

pgdemo1.f: Fixed error in scatter plot, and rewrote random number routines.
pgdemo2.f: Exercise a few more escape sequences.

pgplot/src

grdtyp.f, grldev.f: Changed to totally ignore a PGPLOT driver that reports a zero-length device type. This is to allow for stub drivers (more to come on this).
grfa.f: Fix bug: polygon fill was ignored on devices for which fill must be emulated in PGPLOT if the y-axis was reversed.
grfa.f, grrec0.f: Changed to avoid use of a real variable as a do-loop index (not allowed by some compilers).
grscr.f: Fix bug that affected some drivers: if you change the color representation of the current color, these drivers did not notice.
grsyds.f: Changed to allow 304 = 256+48 characters in a font rather than 128+48 (the `48' are the greek characters). Added \. escape sequence.
grsymk.f: Changed to allow 304 = 256+48 characters in a font rather than 128+48. This is in preparation for using the ISO-Latin-1 character set rather than US-ASCII. Unaccented glyphs have been assigned for most of the ISO-Latin-1 accented characters.
pgcl.f: Under rare circumstances could crash with both arguments to atan2 equal to zero. [This is an internal routine used by PGCONL].
pgpoly.f: Fixed a bug in the clipping algorithm that affected some polygons that lie entirely outside the viewport.
pgqcs.f: Added option UNITS=4 to determine the character height in world coordinates, and fixed a bug that would give wrong values on devices with non-square pixels.
pgqhs.f: Corrected comments (arguments are output, not input).
pgqinf.f: Changed version number to 5.0.3. Changed cursor test to determine whether the driver reports a cursor, rather than assuming that all interactive devices have cursors.
pgtbox.f: New option `X' to label the HH field modulo 24 [Neil Killeen].
pgimag.f: Minor changes to header comments.
pgswin.f, pgwnad.f: These routines now check whether a window of zero width or zero height has been requested, in order to prevent a nasty divide-by-zero error.
pg*.f (many files): Many of the top-level PG routines have been modified to issue a warning message (by calling PGNOTO) if no device is open. This is in preparation for multiple open devices.

pgplot/sys

grfileio.c: Recognize file name ``-'' as standard output.

pgplot/sys_dos

msdriv.f: Revised device driver for PCs running DOS with Microsoft Fortran 5.0, from Harry Lehto. This replaces msdriv.f, msdriv.koyama, and msdriv.lehto.

pgplot/sys_linux

aaaread.me: Add notes on use of Gnu g77 compiler [Brian Toby].
g77_gcc.conf: (New file.) Configuration file for Gnu g77 compiler [Brian Toby].

pgplot/sys_mac

(New directory.) Macintosh OS, LS Fortran 2.1. See file aaaread.me.

pgplot/sys_msdos

aaaread.me: Added information about a serious bug in the Microsoft Powerstation Fortran compiler [from C. T. Dum].

pgplot/sys_osf1

aaaread.me: Added notes about the 64-bit address problem: some PGPLOT device drivers must be modified to be used with this operating system.
grgmem.c: This is a variant of pgplot/sys/grgmem.c that returns the pointer as an INTEGER*8 (64-bit-address).

pgplot/sys_sun4

*.conf: Changed shared library version number from 1.6 to 1.7.

pgplot/sys_vms

grfileio.c: Now recognizes file name ``-'' as standard output.