Re: [Matplotlib-users] Matplotlib & Basemap / What is the Best Graphical Back-end for Raster Data Display (.png) ?
Dear colleagues, Yes, I've downloaded the latest stable image of Matplotlib source from the pypi repository matplotlib-1.5.1.tar.gz, running the commands: sudo python setup.py build and sudo python setup.py install. When executing larger plots, the Agg crashes with a segmentation fault message. My guess is that the c header files are not compiled with the correct platform setting (s390x). Is there a way to rebuild the c prerequisites used by the embedded Agg framework? Thanks in advance for your advice. Regards, Claude Falbriard Certified IT Specialist L2 - Middleware Phone: 55-13-99662-5703 | Mobile: 55-13-98117-3316 E-mail: clau...@br.ibm.com From: Benjamin Root <ben.v.r...@gmail.com> To: Claude Falbriard/Brazil/IBM@IBMBR Cc: Matplotlib Users <matplotlib-users@lists.sourceforge.net> Date: 03/03/2016 11:44 Subject: Re: [Matplotlib-users] Matplotlib & Basemap / What is the Best Graphical Back-end for Raster Data Display (.png) ? Matplotlib will not work at all without AGG. Even the AGG-less backends still use AGG for image handling (imshow() and such). We can not guarantee that matplotlib would work with agg 2.5, as that is the GPL'ed version. We develop against a patched 2.4 branch of AGG (which is BSD-licensed), which is distributed with our source, and is built as part of our build process. Have you tried building matplotlib directly from our source without a system install of AGG? Cheers Ben Root On Thu, Mar 3, 2016 at 6:34 AM, Claude Falbriard <clau...@br.ibm.com> wrote: Dear colleagues, I like to receive an advice about the best back-end choice for Matplotlib & Basemap to generate large .png images in a background processing mode. Having issues with the pre-compiled "Agg" package which does not work under my machine architecture. Also not able to recompile the Agg 2.5 package as its build throws an error at the build script autogen.sh. Error: ./configure: line 15546: syntax error near unexpected token `$SDL_VERSION,' ./configure: line 15546: `AM_PATH_SDL($SDL_VERSION,' When bypassing this line it runs into another dependency which is blocking the make install process. libtool: link: cannot find the library `../src/platform/X11/libaggplatformX11.la' or unhandled argument `../src/platform/X11/libaggplatformX11.la' Makefile:1166: recipe for target 'aa_demo' failed make[1]: *** [aa_demo] Error 1 make[1]: Leaving directory '/data/Downloads/agg/agg-2.5/examples' Makefile:481: recipe for target 'install-recursive' failed make: *** [install-recursive] Error 1 I do not plan to use any interactive access, so my guess is that excluding X11 libraries should work OK. My test showed that the "Cairo" package is working fine, but its quality (vector oriented) is not as good compared to the Agg raster display. Case the "Agg" is not able to install on my machine, is there an alternate graphical back-end available under SuSE environments? Regards, Claude Falbriard Certified IT Specialist L2 - Middleware Phone:55-13-99662-5703 | Mobile:55-13-98117-3316 E-mail: clau...@br.ibm.com -- Site24x7 APM Insight: Get Deep Visibility into Application Performance APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month Monitor end-to-end web transactions and take corrective actions now Troubleshoot faster and improve end-user experience. Signup Now! http://pubads.g.doubleclick.net/gampad/clk?id=272487151=/4140 ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- Site24x7 APM Insight: Get Deep Visibility into Application Performance APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month Monitor end-to-end web transactions and take corrective actions now Troubleshoot faster and improve end-user experience. Signup Now! http://pubads.g.doubleclick.net/gampad/clk?id=272487151=/4140___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Matplotlib & Basemap / What is the Best Graphical Back-end for Raster Data Display (.png) ?
AGG is used for image handling, particularly for handling transforms, scaling, interpolation and such. The AxesImage object that you get from calling imshow() is handled through the AGG library. This is true regardless of the backend being used because it is based in the AxesImage class (and others). An SVG of a plot that used imshow() has raster data in it that comes from AGG (and you can choose to rasterize other things, as well). Cairo still needs the image buffer. So, the distinction is the use of the AGG library, and the use of the AGG backend. The AGG library is required, but the AGG backend is not (but highly recommended). I will admit that I didn't have this distinction very clear in my own head until very recently when reviewing some PRs that reworked the image handling architecture. I hope that clears it up for you, too. Cheers! Ben Root On Thu, Mar 3, 2016 at 10:05 AM, Jerzy Karczmarczuk < jerzy.karczmarc...@unicaen.fr> wrote: > Le 03/03/2016 15:43, Benjamin Root a écrit : > > Matplotlib will not work at all without AGG. Even the AGG-less > > backends still use AGG for image handling (imshow() and such). > > Is it so? I never found such strong statement in the docs. > > 1. SVG backend produces vector graphics, no rasterisation in principle, > so why AGG? > 2. Cairo uses its own engine. Why AGG? > 3. Image (PNG) "production" from curves, etc. uses AntiGrain, but if > imshow() shows an image which is just a pixel array, there is no > manipulation needing AGG, an element (triple RGB) becomes a pixel, and > that's it. > > Jerzy Karczmarczuk > > > > -- > Site24x7 APM Insight: Get Deep Visibility into Application Performance > APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month > Monitor end-to-end web transactions and take corrective actions now > Troubleshoot faster and improve end-user experience. Signup Now! > http://pubads.g.doubleclick.net/gampad/clk?id=272487151=/4140 > ___ > Matplotlib-users mailing list > Matplotlib-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/matplotlib-users > -- Site24x7 APM Insight: Get Deep Visibility into Application Performance APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month Monitor end-to-end web transactions and take corrective actions now Troubleshoot faster and improve end-user experience. Signup Now! http://pubads.g.doubleclick.net/gampad/clk?id=272487151=/4140___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Matplotlib & Basemap / What is the Best Graphical Back-end for Raster Data Display (.png) ?
Le 03/03/2016 15:43, Benjamin Root a écrit : > Matplotlib will not work at all without AGG. Even the AGG-less > backends still use AGG for image handling (imshow() and such). Is it so? I never found such strong statement in the docs. 1. SVG backend produces vector graphics, no rasterisation in principle, so why AGG? 2. Cairo uses its own engine. Why AGG? 3. Image (PNG) "production" from curves, etc. uses AntiGrain, but if imshow() shows an image which is just a pixel array, there is no manipulation needing AGG, an element (triple RGB) becomes a pixel, and that's it. Jerzy Karczmarczuk -- Site24x7 APM Insight: Get Deep Visibility into Application Performance APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month Monitor end-to-end web transactions and take corrective actions now Troubleshoot faster and improve end-user experience. Signup Now! http://pubads.g.doubleclick.net/gampad/clk?id=272487151=/4140 ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Matplotlib & Basemap / What is the Best Graphical Back-end for Raster Data Display (.png) ?
Matplotlib will not work at all without AGG. Even the AGG-less backends still use AGG for image handling (imshow() and such). We can not guarantee that matplotlib would work with agg 2.5, as that is the GPL'ed version. We develop against a patched 2.4 branch of AGG (which is BSD-licensed), which is distributed with our source, and is built as part of our build process. Have you tried building matplotlib directly from our source without a system install of AGG? Cheers Ben Root On Thu, Mar 3, 2016 at 6:34 AM, Claude Falbriardwrote: > Dear colleagues, > > I like to receive an advice about the best back-end choice for Matplotlib > & Basemap to generate large .png images in a background processing mode. > Having issues with the pre-compiled "Agg" package which does not work > under my machine architecture. Also not able to recompile the Agg 2.5 > package as its build throws an error at the build script autogen.sh. > Error: > > ./configure: line 15546: syntax error near unexpected token `$SDL_VERSION,' > ./configure: line 15546: `AM_PATH_SDL($SDL_VERSION,' > > When bypassing this line it runs into another dependency which is blocking > the make install process. > > libtool: link: cannot find the library > `../src/platform/X11/libaggplatformX11.la' or unhandled argument > `../src/platform/X11/libaggplatformX11.la' > Makefile:1166: recipe for target 'aa_demo' failed > make[1]: *** [aa_demo] Error 1 > make[1]: Leaving directory '/data/Downloads/agg/agg-2.5/examples' > Makefile:481: recipe for target 'install-recursive' failed > make: *** [install-recursive] Error 1 > > I do not plan to use any interactive access, so my guess is that excluding > X11 libraries should work OK. > > My test showed that the "Cairo" package is working fine, but its quality > (vector oriented) is not as good compared to the Agg raster display. Case > the "Agg" > is not able to install on my machine, is there an alternate graphical > back-end available under SuSE environments? > > Regards, > > *Claude Falbriard* > Certified IT Specialist L2 - Middleware > -- > *Phone:*55-13-99662-5703 | *Mobile:*55-13-98117-3316 > *E-mail:* *clau...@br.ibm.com* > > > > -- > Site24x7 APM Insight: Get Deep Visibility into Application Performance > APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month > Monitor end-to-end web transactions and take corrective actions now > Troubleshoot faster and improve end-user experience. Signup Now! > http://pubads.g.doubleclick.net/gampad/clk?id=272487151=/4140 > ___ > Matplotlib-users mailing list > Matplotlib-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/matplotlib-users > > -- Site24x7 APM Insight: Get Deep Visibility into Application Performance APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month Monitor end-to-end web transactions and take corrective actions now Troubleshoot faster and improve end-user experience. Signup Now! http://pubads.g.doubleclick.net/gampad/clk?id=272487151=/4140___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] Matplotlib & Basemap / What is the Best Graphical Back-end for Raster Data Display (.png) ?
Dear colleagues, I like to receive an advice about the best back-end choice for Matplotlib & Basemap to generate large .png images in a background processing mode. Having issues with the pre-compiled "Agg" package which does not work under my machine architecture. Also not able to recompile the Agg 2.5 package as its build throws an error at the build script autogen.sh. Error: ./configure: line 15546: syntax error near unexpected token `$SDL_VERSION,' ./configure: line 15546: `AM_PATH_SDL($SDL_VERSION,' When bypassing this line it runs into another dependency which is blocking the make install process. libtool: link: cannot find the library `../src/platform/X11/libaggplatformX11.la' or unhandled argument `../src/platform/X11/libaggplatformX11.la' Makefile:1166: recipe for target 'aa_demo' failed make[1]: *** [aa_demo] Error 1 make[1]: Leaving directory '/data/Downloads/agg/agg-2.5/examples' Makefile:481: recipe for target 'install-recursive' failed make: *** [install-recursive] Error 1 I do not plan to use any interactive access, so my guess is that excluding X11 libraries should work OK. My test showed that the "Cairo" package is working fine, but its quality (vector oriented) is not as good compared to the Agg raster display. Case the "Agg" is not able to install on my machine, is there an alternate graphical back-end available under SuSE environments? Regards, Claude Falbriard Certified IT Specialist L2 - Middleware Phone: 55-13-99662-5703 | Mobile: 55-13-98117-3316 E-mail: clau...@br.ibm.com -- Site24x7 APM Insight: Get Deep Visibility into Application Performance APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month Monitor end-to-end web transactions and take corrective actions now Troubleshoot faster and improve end-user experience. Signup Now! http://pubads.g.doubleclick.net/gampad/clk?id=272487151=/4140___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users