Great! Glad to know I wasn't going crazy ;) Cheers, Mike
Wayne E. Harlan wrote: > By the time I did the update it was at 3931 but it works just fine. I > inserted the 6"x8" picture into swriter and it shows up at 6"x8". > Thank you very much ! > > Wayne > > Michael Droettboom wrote: >> Wayne E. Harlan wrote: >>> Michael: >>> >>> Both r3927 and r3929 resulted in the smaller png file that's just >>> transparent background. >> >> The point of interest is r3926, before this change. r3927 and r3929 >> are identical on the trunk. >> >> It turns out there was a peculiarity with how image files are saved in >> the GtkAgg backend that was triggering this bug. That should now be >> fixed in r3930. Please try that and let me know how that works for you. >> >>> It's roughly 20% of the size of the file I get with the latest >>> release, 0.90.1, which opens fine (but has the wrong dpi). That >>> tells me that on my system, some stuff just isn't getting written to >>> the file. I have attached my matplotlibrc and will read the docs to >>> see how to save a raw image and attach that, too. I don't have >>> ImageMagick, but can download and compile it later today. I tried a >>> 300 dpi jpg with r3929 and the image saves OK but has the wrong dpi >>> (72). The .raw image is also attached. It was over 17 MB so I >>> bzipped it. I'm surprised it ended up at 700 bytes ! >> >> That raw file is fully white and transparent also. >> >> Hope that helps, >> Mike >> >>> Wayne >>> >>> Michael Droettboom wrote: >>>> Unfortunately, I'm not able to reproduce this here with the .py you >>>> attached. Both SVN r3926 (before the PNG resolution change) and SVN >>>> r3927 (after the PNG resolution change) work for me. Are you >>>> comparing those two SVN revisions, or SVN vs. 0.90.1? >>>> >>>> I can confirm that the PNG you attached is all white and fully >>>> transparent. >>>> >>>> Just for information, my machine (RHEL4) has libpng 1.2.7. >>>> >>>> Can you send a copy of your matplotlibrc? Also, can you save out a >>>> .raw image? (If you rename it to foo.rgba, you can display these >>>> images with the ImageMagick command "display -size 1800x1200 -depth >>>> 8 foo.rgba") That would help determine whether the problem is in the >>>> PNG-writing code or something higher up. >>>> >>>> Cheers, >>>> Mike >>>> >>>> Wayne E. Harlan wrote: >>>>> Michael: >>>>> >>>>> I tried a complete checkout for comparison (3929). In the >>>>> meantime, my libpng is 1.2.18 (installed from source as is >>>>> everything - this is an LFS/BLFS system.) Yes, the plot was >>>>> working before the change and I can send you some png's from that >>>>> if you need to see them, or I can backtrack to 0.90.1 and repeat >>>>> this. Please bear in mind that the plot displays (and always has) >>>>> quite correctly on screen - it's just the saved file that consists >>>>> of just background. I have attached the script, the resulting png >>>>> and a saved screenshot from the Gimp. Attachments are gzipped. >>>>> >>>>> Wayne >>>>> >>>>> Michael Droettboom wrote: >>>>>> Hmmm. I'm very surprised that this change could cause that. All >>>>>> it does is add an additional metadata chunk to the PNG file, which >>>>>> shouldn't have any affect on the image data itself. >>>>>> simple_plot.py works fine for me in GIMP 2.0.5 both before and >>>>>> after this change. Can you verify that this plot was working >>>>>> before the change to save the resolution in the PNG file? If so, >>>>>> can you send me the source for your plot and the PNG file? Also, >>>>>> what version of libpng are you using? (pkg-config --version libpng >>>>>> should display this on most recent Linux distros). >>>>>> >>>> >> -- Michael Droettboom Science Software Branch Operations and Engineering Division Space Telescope Science Institute Operated by AURA for NASA ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
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