[pdl-commit] [SCM] pdl branch, master, updated. v2.4.9_010-25-g1fce6d4

[Craig D. <zo...@us...>]

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- Log -----------------------------------------------------------------
commit 1fce6d43ac87bca690e8581c6291a55af235020f
Author: Craig DeForest <zowie@Clio-2.local>
Date:   Sat Nov 19 23:30:04 2011 -0700

    Fixes bug 3299611 - obscure fits I/O bug.  Replaced a simple "clump(-1)" operation with
    a slightly-more-expensive "->copy->reshape($p->nelem)" operation, which forces
    regularization in memory.  Since disk I/O is (thought to be) slower than memory operations,
    and since clump often copies memory anyway, this seems a small price to pay.  The alternative
    would be to dive into XS and access the dimincs fields of the subject pdl directly, but
    it is not clear there would be a significant performance advantage in the usual case.

commit 6dfce88bd66b88381198381413296d54fb12023d
Author: Craig DeForest <zowie@Clio-2.local>
Date:   Sat Nov 19 23:12:22 2011 -0700

    Fixes bug 3428356: PDL::Transform::map output FITS header is slightly off
    The problem was an operation order:  a half-pixel coordinate offset (used to
    find the pixel coordinate of the corner of the outermost image pixels) was
    happening *before* the subsample scaling operation (a multiplication) rather
    than *after* it.  Fixed.
    
    Thanks to Derek for finding and reporting this.

-----------------------------------------------------------------------

Summary of changes:
 IO/FITS/FITS.pm            |    2 +-
 Lib/Transform/transform.pd |    4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)


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