[Mapserver-users] bizarre raster output

[Charlton Purvis]

That's spectacular, Perry!  I'll look into libpng stats.  I can't
remember what I have offhand.  Then look for cvs gdal if necessary.

Infinite thanks!!!

Charlton

> -----Original Message-----
> From: Pericles Nacionales [mailto:nacional at cbs.umn.edu]
> Sent: Thursday, January 29, 2004 7:16 PM
> To: Charlton Purvis
> Cc: mapserver-users at lists.gis.umn.edu; Brock Murch; Jeremy Cothran
> Subject: Re: [Mapserver-users] bizarre raster output
> 
> Charlton,
> 
> Check http://hypnos.cbs.umn.edu/projects/gdal_segfault.html.  Is this
what
> it's supposed to look like?  I'm running MapServer 4.0.1 but compiled
gdal
> from cvs just a couple days ago.  PNG support was compiled using
external
> libpng version 1.2.5.
> 
> You might want to upgrade your libpng.
> 
> -Perry N.
> 
> 
> On Thu, 29 Jan 2004, Charlton Purvis wrote:
> 
> > Hi, folks:
> >
> > I've got a raster .png, 8800 x 6600, complete w/ a working .wld.
The
> > original raster has some color on the left side, and the rest of the
> > image is transparent.
> >
> > I expected to see the Pacific covered by this raster and the rest of
the
> > Eastern part left alone.  But the attached image is what I get.
> > Bizarre.  Is there a max pixel image size?  The entire PNG is a mere
> > 2MB.
> >
> > Anyone seen anything like this?  It's purty, but it ain't gunna cut
it.
> >
> > MapServer version 4.0 OUTPUT=PNG OUTPUT=JPEG OUTPUT=WBMP
SUPPORTS=PROJ
> > SUPPORTS=FREETYPE SUPPORTS=WMS_SERVER SUPPORTS=WMS_CLIENT
INPUT=EPPL7
> > INPUT=JPEG INPUT=POSTGIS INPUT=GDAL INPUT=SHAPEFILE
> >
> > gdal-1.1.8 (plain ./configure)
> >
> >   EXTENT -125 -5 -45 55
> >   SIZE 880 660
> >   IMAGETYPE PNG  # I've also tried RGBA w/ TRANSPARENCY ON
> >
> > The PROJECTIONs are the same.  Also tried stripping out everything
> > (including projections) but the raster layer.  Same results.
> >
> > Aha!  I just ran a gdalinfo, and I get a seg fault.  Anyone mind
> > checking it out?  Original raster (non-transparent) is here:
> > http://nautilus.baruch.sc.edu/~cpurvis/.
> >
> > I don't think the file is corrupt since it displays OK in Photoshop,
and
> > ImageMagick is OK w/ it, too.
> >
> > Thanks,
> >
> > Charlton
> >
> >
> >
> >
> > Charlton Purvis
> > (803) 777-8858 : voice
> > (803) 777-3935 : fax
> > cpurvis at sc.edu
> >
> > Baruch Institute
> > University of South Carolina
> > Columbia, SC 29208
> >
> >