Hi Chris, On Thu, Aug 13, 2009 at 11:38 AM, Chris Arthur<chris.art...@bristol.ac.uk> wrote: > I've just installed RDKIt and everything seems to have gone fine. > > But..when i run the example code given in the wiki for creating 2d > pictures i get an error with cairo > > Line37 of cairocanvas.py > > stride=cairo.ImageSurface.format_stride_for_width (cairo.FORMAT_ARGB32, > AttributeError:type object 'cairo.ImageSurface' has no attribute > 'format_stride_for_width' > > I have tried this on two boxes running Ubuntu 9.04 and one using Fedora > 8, and they all give the same error > > format_stride_for_width is definately in Ciaro (currently v 1.8.8) > <http://cairographics.org/documentation/cairomm/reference/classCairo_1_1ImageSurface.html> > > Oddly Ubuntu 9.04 uses the libcairo2 version is 1.8.6-1 > > Does anyone have any suggestions?
I'm afraid that I don't really. I believe that I have only ever managed to get cairo and pycairo working on one machine (running ubuntu 8.10; I haven't tried since upgrading to 9.04). Cairo is something I'd love to make more use of, but the number of dependencies is just too daunting to me. Have you tried using one of the other RDKit canvas options? The agg canvas produces very high quality output and is somewhat more self contained than the cairo one (though you need to get aggdraw from subversion). The sping-based canvases produce lower quality raster output (not antialiased) but are at least completely contained in the RDKit distribution. -greg
