Maybe I'll try the latest SVN version. I'm running the version in the ubuntu 8.10 repositories, which appears to be 0.98.3
As for both contourf and pcolor, I was just testing to see that it was messed up either way, leaving one commented and one uncommented. Having them both uncommented was just a typo, but the problem persists either way. Thanks, Kevin Jae-Joon Lee wrote: > I couldn't reproduce it (my output has no transparent column). I'm > running the current svn. I wonder if others can reproduce it. > > Kevin, > what happen if you only do one of the pcolor or the contourf (it is > not clear why you're calling pcolor as it will be overridden by > contourf)? > > -JJ > > > On Mon, Mar 23, 2009 at 5:10 PM, kmilner <kmil...@usc.edu> wrote: > >> Hi All, >> >> I'm trying to plot evenly grided data to tiles for google maps overlays. >> Each tile needs to be a 256x256 pixel PNG image, without any borders. >> >> The problem that I'm having is that the leftmost column of the resultant PNG >> image (saved using FigureCanvasAgg.print_figure) is transparent. >> >> My real code uses basemap because the output has to be in the mercator >> projection, but the sample code below is simplified to exclude it. You can >> view the sample image that is produced at this address: >> http://earth.usc.edu/ftp/kmilner/trans_test.png >> >> Any ideas? >> >> Thanks! >> Kevin >> >> #!/usr/bin/env python >> >> from matplotlib.backends.backend_agg import FigureCanvasAgg as FigureCanvas >> from matplotlib.figure import Figure >> import numpy >> >> dpi = 64 >> pixels = 256 >> fig = Figure(linewidth=0, frameon=False) >> canvas = FigureCanvas(fig) >> >> fig.figurePatch.set_alpha(0.0) >> >> ax_bounds = [0, 0, 1, 1] >> >> ax = fig.add_axes(ax_bounds, axisbg=(1.0,1.0,0.0,0.0), >> frameon=False ) >> >> inches = pixels / dpi >> fig.set_size_inches(256 / dpi, 256 / dpi) >> >> num = 31 >> >> z = numpy.empty( (num, num) ) >> >> for x in xrange(num): >> for y in xrange(num): >> z[x, y] = x * y >> >> x, y = numpy.meshgrid( range(num), range(num) ) >> >> image = ax.pcolor(x, y, z) >> image = ax.contourf(x, y, z) >> >> canvas.print_figure("/tmp/trans_test.png", dpi=dpi) >> -- >> View this message in context: >> http://www.nabble.com/Leftmost-column-of-PNG-output-is-transparent-tp22669232p22669232.html >> Sent from the matplotlib - users mailing list archive at Nabble.com. >> >> >> ------------------------------------------------------------------------------ >> Apps built with the Adobe(R) Flex(R) framework and Flex Builder(TM) are >> powering Web 2.0 with engaging, cross-platform capabilities. Quickly and >> easily build your RIAs with Flex Builder, the Eclipse(TM)based development >> software that enables intelligent coding and step-through debugging. >> Download the free 60 day trial. http://p.sf.net/sfu/www-adobe-com >> _______________________________________________ >> Matplotlib-users mailing list >> Matplotlib-users@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/matplotlib-users >> >> ------------------------------------------------------------------------------ _______________________________________________ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
