PGPLOT version 5.1.1

Tested Systems

Version 5.1.1 has been tested with the following operating systems and compilers. Drivers tested include: GI, GL, NU, PP, PS, TT, VT, WD, X2, XM, XW (but not all combinations of drivers and systems have been tested exhaustively).

SunOS 4.1.3_U1, Sun Fortran (f77) 1.3.1, GNU C (gcc) 2.7.0 (tested on SPARC 5).
Solaris 2.5 (SunOS 5.5), Sun Fortran (f77) 3.0.1, Sun C (cc) 3.0.1 (tested on SPARC IPX).
Solaris 2.5 (SunOS 5.5), Sun Fortran (f77) 3.0.1, GNU C (gcc) 2.7.2 (tested on SPARC IPX, SPARC Ultra-1).
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).

Changes in Version 5.1.1

All changes are bug fixes or minor improvements. The most notable bug fixes are:

PGOPEN, PGBEG: a device specification like '? ' (question mark with one or more trailing spaces) causes PGOPEN to issue a blank prompt for device specification. This was an unintended change in 5.1.0, and has been fixed in version 5.1.1.
PGBEG: in version 5.1.0, the ordering of panels changed from row order to column order. The way the sign of the NXSUB argument was interpreted was precisely the opposite of the documented interpretation (NXSUB > 0 should give row order, and < 0 should give column order). PGSUBP has always been wrong, but PGBEG acquired the incorrect behavior in version 5.1.0. Both PGBEG and PGSUBP now behave as documented.
The PostScript driver was ignoring environment variables used to set the paper size. It now recognizes these variables. In addition, it will accept requests via routine PGPAP to change the paper size, even if the size requested is larger than the default size. (You can still set the default size with environment variables PGPLOT_PS_WIDTH and PGPLOT_PS_HEIGHT.) There are two side-effects of this change: (1) When PGPAP is used, a portrait-mode graph is placed in the lower left corner of the paper (offset by the amount specified by environment variables PGPLOT_PS_HOFFSET and PGPLOT_PS_VOFFSET; a landscape-mode graph is placed in the same corner of the paper, but in this case it appears to be the top left corner! (2) When PGPAP is used, the bounding-box cannot be guessed when the file is opened, so you should not use the PGPLOT_PS_BBOX environment variable; if you do not set this variable, a correct bounding box will be written in the file trailer (see the discussion in the note on the PostScript printer driver).

List of Changes

pgplot

aaaread.me: Revised for version 5.1.1.
copyright.notice: Version number changed.
makemake: It now issues a message encouraging the installer to read the appropriate README file.
ver511.txt [new file]: List of changes (this file).

pgplot/drivers

psdriv.f: Bug fixes: PGPLOT_PS_HOFFSET and PGPLOT_PS_VOFFSET were not decoded correctly (bug introduced in v5.1.0); bounding box could be incorrect (probably only on systems with non-static allocation of Fortran variables). Driver now honors all requests to change the paper size with PGPAP. Optimization: suppressed attempts to draw zero-length continuation line segments (thanks to Remko Scharroo).
vtdriv-vms.f: This is an alternative to vtdriv.f. It uses VMS-specific Fortran, but may work better than vtdriv.f on VMS systems.
xwdriv.c, pgxwin_server.c: Bug fix: images were displayed incorrectly on (some?) X-servers with more than 8 bits per pixel.

pgplot/examples

pgdemo2.f: Added example of Cyrillic text on page 3.

pgplot/src

grdtyp.f, grpars.f: Bug fix: improved minmatch routine for device types to allow, e.g., /HPGL even if /HPGL2 is also an option.
grpocl.f: Bug fix: (this is a support routine for polygon fill with PGPOLY, etc.) A polygon with one vertex exactly aligned with the edge of the window was not clipped correctly (thanks to Remko Scharroo for the bug fix).
pgopen.f: Bug fix and improvement in header comments. V5.1.0 introduced a bug: a device argument of '? ' with one or more trailing spaces did not issue the correct prompt.
pgqinf.f: Change version to 5.1.1.
pgsave.f: Correction in header comments.
pgsubp.f: This routine was interpreting a negative NXSUB argument incorrectly. According to the documentation, positive NXSUB should step through the panels in row order, while negative NXSUB should step through them in column order; but the routine was interpreting positive NXSUB as column order and negative as row order. The behavior has been corrected to match the documentation. (In version 5.1.0, pgbeg was changed to call pgsubp, thus introducing this bug in pgbeg as well.)
pgtbox.f: The positioning of labels relative to the axis has been improved; the displacement of labels from the axis should now be the same as in PGBOX. Problems were most noticeable when a large character size was requested. (Thanks to Neil Killeen for the fix.)
pgvect.f: The routine was ignoring the first row and column of the array when finding the scale-factor for the vector length. (Thanks to David Singleton for pointing this out.)

pgplot/sys_arc

F77/ACDriver: Revised to allow a concurrent hardcopy device (Dave Crennell).
F77/GRexecAC: Correct typo (Dave Crennell).

pgplot/sys_fujitsu

This new directory replaces sys_vp2200. The files are from David Singleton.

aaaread.me: Revised.
uxpm_frt_cc.conf: Configuration file for Fujitsu UXP/M, frt FORTRAN compiler and /usr/ucb/cc compiler.
uxpv_frt_cc.conf: Configuration file for Fujitsu UXP/V, frt FORTRAN compiler and /usr/ucb/cc compiler.

pgplot/sys_hp

*.conf: Added support for compiling the Motif driver (xmdriv) [mcs].

pgplot/sys_linux

aaaread.me: Added notes on Linux variants and problems.
g77_elf.conf [new file]: Configuration file for Linux systems that use ELF binaries.

pgplot/sys_sol2

aaaread.me: Added notes about use of Sun f90 compiler and GNU g77 compiler. Added note about problem with the ucb version of "ld".
f90_cc.conf [new file]: For Solaris f90 1.1 Fortran compiler (from Ricardo Piriz).
g77_gcc.conf [new file]: For GNU g77 Fortran compiler (with gcc).

pgplot/sys_vp2200

Directory removed.

pgplot/sys_vms

aaaread.me [new file]: Includes some notes on incompatibilities between versions of Motif, C compiler, and VMS.
grlgtr.f: This has been rewritten: it now treats logical names as case-insensitive, and uses $TRNLNM instead of obsolete $TRNLOG.
makedoc.com [new file]: A DCL command procedure to extract the documentation from the source code.