Another (still slightly hacky) way might be to define an optional attribute of the file object. Something like this:
if hasattr( outputFile, "mplFormat" ): format = getattr( outputFile, "mplFormat" ) Then have set PdfFile.mplFormat to be "pdf". This is a little less hacky in that it doesn't depend on coding a specific class into savefig. Ted > -----Original Message----- > From: Michael Droettboom [mailto:md...@stsci.edu] > Sent: Friday, January 02, 2009 7:27 AM > To: matplotlib-devel@lists.sourceforge.net > Subject: Re: [matplotlib-devel] Multipage pdf files > > It's slightly hackish, but would it be possible to do an "isinstance" > check in savefig, and if the first arg is a PdfFile, set "format" to > "pdf" automatically, and if "format" is set to something else raise an > exception? A little hackish because it doesn't necessarily scale to > other formats easily, but it would prevent the user from shooting > herself in the foot. > > Mike > > Jouni K. Seppänen wrote: > > I added support to the pdf backend for multipage pdf files. The > current > > API (which I'm not entirely happy with) is that you create a PdfFile > > object, plot your figures, saving each one to the PdfFile object, and > > then close the object. The part I'm unhappy about is that because > > PdfFile is a file-like object - it has a write method - you can > > accidentally save your figure as a png into it and get a broken pdf > > file. You have to specify format='pdf' to savefig to avoid this. > > > > Here's an example: > > > > from matplotlib.backends.backend_pdf import PdfFile > > > > pdf = PdfFile('multipage_pdf.pdf') > > > > figure(...) > > # build your figure > > savefig(pdf, format='pdf') > > > > # repeat for all your figures > > > > pdf.close() > > > > > > > > > ----------------------------------------------------------------------- > ------- > _______________________________________________ > Matplotlib-devel mailing list > Matplotlib-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/matplotlib-devel > > No virus found in this incoming message. > Checked by AVG - http://www.avg.com > Version: 8.0.176 / Virus Database: 270.10.2/1872 - Release Date: > 1/2/2009 1:10 PM ------------------------------------------------------------------------------ _______________________________________________ Matplotlib-devel mailing list Matplotlib-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-devel
