The following issues have been reported with this version of PDL:
- If you have a pre-existing PDL install in your perl @INC path,
mysterious failures have been observed in some tests due to
unintentionally pulling in a previous version of PDL. The
'perl Makefile.PL' stage now checks for this and warns you.
NOTE: many tests for modules with external dependencies now
check if the module was actually built before running the
tests. The warning is left in as a reminder until all module
test files have been so updated.
- The PDL build process also checks for white space in the build
directory as that is known to cause problems for some modules
and asks you if you wish to continue [default is yes].
NOTE: You can avoid the interactive prompts by setting the
environment variable PERL_MM_USE_DEFAULT to true (e.g., 1).
- The Perl debugger for perls 5.10.1 through 5.12 has a new
"feature" leading to false fails for lvalue subroutines when
run under the debugger. If you need to debug such code with
an affected perl version, the work around is to use an
intermediate temporary variable assignment as in:
$piddle->slice('0:10') .= 100; # original slice code
($tmp = $piddle->slice('0:10')) .= 100; # work around perl -d "feature"
The problem is understood and it is hoped that an official
fix will become available. NOTE: the work around is 100%
effective---but ugly.
- Multiline q'' constructs in the pdl2 shell now work correctly
but you'll need to avoid using the q abbreviation for quit
in pdl2 (at least until the multiline plugin in Devel::REPL
can be updated appropriately. If you do get "stuck" in a q
quit attempt, just type Ctrl-D to exit the shell.
- The demo 3d and 3d2 windows do not close (can not be closed)
after the demo finishes. You need to exit the perldl shell
to have the window close.
- When you close a TriD graphics window with the frame widget
the whole process exits including the perldl shell.
- PDL::FFTW is based on version 2 of the FFTW API. The current
release of the FFTW library is version 3.2.2. To use PDL::FFTW
you will need to install FFTW version 2.1.5, use the built-in
PDL::FFT routines instead, or (better yet) submit a patch to
update PDL::FFTW to the version 3 API.
- Extremely verbose but not particularly helpful text output from
the configure-build-test process.
- Directory completion in the interactive PDL shells (perldl and pdl2)
using Term::ReadLine::Perl adds a space after each directory expansion.
To continue to complete, one must delete the space before typing <TAB>
again. The problem has been reported as a Term::ReadLine::Perl bug.
- PDL on Cygwin has (by default) a 300MB process memory limit which can
cause out of memory crashes with large data sets. See the cygwin users
guide: http://www.cygwin.com/cygwin-ug-net/setup-maxmem.html for how
to increase the memory limit.
- minimum/maximum/min/max inconsistently handle NaN values.
NaN's for the first element of a pdl will propagate to the
result while if the first element is a number, then the
result will be a number. The answer for max/min should not
depend on the order of the input values.
- The following SourceForge bugs are outstanding at time of the
PDL-2.4.8 release:
3234141 max() fails on nan
3190227 PDL build fails with parallel GNU make -j3 -j3
3161459 online docs don't link to functions in other PDL modules
3080505 PLplot segfaults on plshades call on OS X
3059083 Problems with FITS header handling
3018731 NiceSlice affects code where it should not
2995500 perl -d chokes on lvalue functions
2153898 default PDL build output too long
1994584 PDL Has no signed 8-bit integer data type
1507054 closing TriD window kills perldl shell
1435189 Installation with cpan2rpm
1205359 PGPLOT Window does not store full state info
For more information on these and other PDL issues, and for
submissions of patches (bug patches are always welcome!),
see the PDL mailing lists. Links to archive list discussions
and how to register for the mailing lists can be found at
http://pdl.sourceforge.net/maillists/ .
