On Tue, Nov 15, 2011 at 7:01 PM, Bill Janssen <bill.jans...@gmail.com> wrote: > Are there any spkgs elsewhere in Sage which require libjpeg? If so, > what version of it? I know that scipy has an imread function; anyone > know what does it do for JPEG? > > Again, installing libjpeg.dylib and/or libpng.dylib into $SAGE_LOCAL/ > lib has bad side effects on OS X, due to the use of DYLD_LIBRARY_PATH > in the Sage framework overall. So, maybe make it an optional spkg, > but having it as a required or standard spkg would be bad.
We already install libpng.dylib standard in all copies of Sage on OS X. There were issues, but they got sorted out a while ago. -- William > > Bill > > On Nov 15, 6:49 pm, William Stein <wst...@gmail.com> wrote: >> On Tue, Nov 15, 2011 at 6:01 PM, kcrisman <kcris...@gmail.com> wrote: >> >> > On Nov 15, 5:34 pm, William Stein <wst...@gmail.com> wrote: >> >> On Tue, Nov 15, 2011 at 2:10 PM, Bill Janssen <bill.jans...@gmail.com> >> >> wrote: >> >> > On Nov 15, 1:02 pm, "Georg S. Weber" <georgswe...@googlemail.com> >> >> > wrote: >> >> >> Some people buidling >> >> >> Sage from source do *want* a libjpeg on their system to be taken into >> >> >> accont by their PIL in Sage! >> >> >> > Really? Do you have user studies or other evidence of that I could >> >> > look at on that? It's surprising to me; I'd think that one build of >> >> > libjpeg would be much like any other build. >> >> >> Georg surely just meant that with the current setup where libjpeg is >> >> not included in Sage, they would want PIL to be able t use libjpeg if >> >> they have it installed on their system. Of course if you include >> >> libjpeg in Sage, then this argument vanishes. >> >> > So are you not-so-subtly hinting >> > thathttp://trac.sagemath.org/sage_trac/ticket/7344 >> > should be a standard spkg? Just checking. >> >> Yes. A standard function in matlab is imread [1], which can read in >> jpg images. I'm sure Mathematica can too. Given the Sage mission >> statement, which is to be a viable alternative to Matlab, Mathematica, >> etc., it would make a lot of sense to include jpeg support standard in >> Sage. >> >> [1]http://www.mathworks.com/help/techdoc/ref/imread.html >> >> >> >> > -- >> > To post to this group, send an email to sage-devel@googlegroups.com >> > To unsubscribe from this group, send an email to >> > sage-devel+unsubscr...@googlegroups.com >> > For more options, visit this group >> > athttp://groups.google.com/group/sage-devel >> > URL:http://www.sagemath.org >> >> -- >> William Stein >> Professor of Mathematics >> University of Washingtonhttp://wstein.org > > -- > To post to this group, send an email to sage-devel@googlegroups.com > To unsubscribe from this group, send an email to > sage-devel+unsubscr...@googlegroups.com > For more options, visit this group at > http://groups.google.com/group/sage-devel > URL: http://www.sagemath.org > -- William Stein Professor of Mathematics University of Washington http://wstein.org -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
