Perry Greenfield wrote: > On Feb 7, 2007, at 10:21 AM, John Hunter wrote: > > >> On 2/7/07, Edin Salkovic <[EMAIL PROTECTED]> wrote: >> >> >>> Why can't mpl's figures be pickled? >>> >> The main thing is we need to add pickle support for all of mpl's >> extension code >> >> http://docs.python.org/lib/node321.html >> >> In earlier attempts people got stuck with trying to pickle the >> CXX extension code, which was causing some problems, but these >> problems may be fixed in more recent versions of CXX. Todd Miller was >> the last person to look at this in some detail, I think. >> >> > I think Todd did get it to work, but I'll copy him on this just to make > sure. > I looked at this in the context of numarray session saving and restoring. In that context, I believed there was a general problem with extension types not being picklable as a matter of developer expediency: first order, pickling support often doesn't get done. So my approach was to fudge a little and create "proxy" objects for things which wouldn't pickle rather than "fix all extension types." Where I left off CXX still didn't support pickling but a Python session with matplotlib and numarray could be saved; numarray arrays would be preserved, matplotlib objects would be "proxied" but unfortunately the proxies don't work in that case.
Todd >> Other hinderances may come from the GUI layer, since figures store >> pointers to their canvases which in some cases come from GUI extension >> code that may not support pickling. But we can fairly easy decouple >> the figure from the canvas at pickle time and deal with pure mpl, >> numpy and python objects. The main work is to add pickle >> serialization to the mpl extension code. >> >> ---------------------------------------------------------------------- >> --- >> Using Tomcat but need to do more? Need to support web services, >> security? >> Get stuff done quickly with pre-integrated technology to make your >> job easier. >> Download IBM WebSphere Application Server v.1.0.1 based on Apache >> Geronimo >> http://sel.as-us.falkag.net/sel? >> cmd=lnk&kid=120709&bid=263057&dat=121642 >> _______________________________________________ >> Matplotlib-users mailing list >> Matplotlib-users@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/matplotlib-users >> > > > ------------------------------------------------------------------------- > Using Tomcat but need to do more? Need to support web services, security? > Get stuff done quickly with pre-integrated technology to make your job easier. > Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo > http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 > _______________________________________________ > Matplotlib-users mailing list > Matplotlib-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/matplotlib-users > ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier. Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
