Announcing the release of PDL-2.016 to CPAN.
It should be appearing at a mirror near you
shortly. This release fixes some bugs, adds
some features and addresses some build problems
that emerged since PDL-2.015 last November.
It would not have happened without the work
of some diligent PDL developers and users with
special acknowledgement to contributions from
Derek Lamb, Craig DeForest, and kmx.
Enjoy!
The PDL Development Team
v2.016 2016-05-30 10:22:04-04:00
General Notes:
* This is version 2.016 of the Perl Data Language.
* Bugs fixed:
417 Perl 5.22: + GSL 2.1 fails to build
408 PDL::GSL::RNG set_seed minor improvement
407 Build failures with GSL 2.1
416 PDL::PP creates .pm & .xs files before pp_done is called
414 ccNcompt (i.e. cc4compt and cc8compt) breaks with byte data type
Highlights:
* All collapse operators now have "<name>over" equivalent names.
This ends an API wart in which most, but not all, of the collapse
operators had a short form that did full collapse and a long form
that did 1-D collapse only (e.g. "and" collapses to a point,
while "andover" collapses by one dimension). The exceptions are
left in for legacy code, but now have regularized "-over" forms
as well:
average -> avgover
daverage -> davgover
maximum -> maxover
maximum_ind -> maxover_ind
maximum_n_ind -> maxover_n_ind
minmaximum -> minmaxover
minimum -> minover
minimum_ind -> minover_ind
minimum_n_ind -> minover_n_ind
* PDL::Transform image resampling now handles bad values in
images. In particular, the `h' and `j' (optimized filter)
resampling methods properly skip bad values in the image,
marking output pixels bad if more than 1/3 of the weighted
values associated with that output pixel are bad.
* PDLs with dataflow can now be reshaped. The dataflow
connection gets severed by the reshape operation.
* PDL::IO::FITS now works better with RICE-compressed FITS
images, such as are produced by NASA's SDO project.
- The NAXIS* header keywords are now replaced by their
ZNAXIS* equivalents, so the NAXIS fields in the header
are correct after the image is read in.
- The Z*, TFIELDS, TTYPE*, and TFORM* keywords are now
deleted from the header object, so that the uncompressed,
loaded image does not have leftover compression headers.
* The language preprocessor PDL::PP now does not automatically
call pp_done for modules that do not call pp_done themselves.
This new, stricter behavior requires module authors to call
pp_done at the end of their PDL::PP file. This prevents
partially-complete .xs and .pm files from being written if
there is a module build error.
* PDL::GSLSF modules have several fixes/improvements to support
building against GSL 2.0:
- New calling convention for gsl_sf_ellint_D.
- New functions gsl_sf_legendre_array
and gsl_sf_legendre_array_index.
- Deprecated gsl_sf_legendre_Plm_array
and gsl_sf_legendre_sphPlm_array.
- New tests for new legendre functions.
- Test requires all PDL::GSLSF modules
to successfully load.
* PDL::GSL::RNG now allows chaining for the set_seed() method:
e.g. $rng = PDL::GSL::RNG->new(..)->set_seed(..)
* PDL::Image2D's ccNcompt connected-component analysis code now
returns types that are >= long, to avoid common overflow errors.
* PDL::whichND returns PDLs of Indx type, to avoid overflows.
* Empty piddles are handled slightly differently now by
PDL::info and `help vars'. Empty piddles are different
from null piddles, and now generate different info strings.
(null piddles lack data or dimensions; empty piddles have
at least one dimension of size 0).
* PDL::Fit::LM:
- Documentation has been clarified relating to input
data uncertainties and weighting of the fit.
- A small test suite has been added.
* There is now a .gitattributes file so GitHub repo language
stats are more accurate.
* The PDL SF/GitHub deveolpment workflow is integrated into
the DEVELOPMENT docs.
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