On Fri, May 28, 2010 at 6:24 PM, Jason Grout <jason-s...@creativetrax.com> wrote: > On 5/28/10 8:08 PM, William Stein wrote: >> >> On Fri, May 28, 2010 at 5:52 PM, Jason Grout >> <jason-s...@creativetrax.com> wrote: >>> >>> On 5/28/10 7:47 PM, Vinod wrote: >>> >>>> X11 connection rejected because of wrong authentication. >>>> Warning: Unable to open display 'localhost:12.0'. You will not be >>>> able to display graphics on the screen. >>>> >>> >>> So now it's not a Sage question, but a question of how to run Matlab over >>> an >>> ssh session. That's something that should have an answer somewhere, >>> either >>> through a google search or asking MathWorks. >> >> No, that is not the problem at all. >> What's happening is that he's giving code to Matlab that asks it to >> pop up a plot. Matlab >> is then trying to make the plot appear on the screen using *XWindows*. >> Naturally, this fails >> in the notebook -- it simply doesn't make any sense to do this. >> > > Right. Thanks for reminding me the context of this conversation. The same > problem (needing to pop up a window) appears when trying to render an image > using OpenGL without X. In the OpenGL case, I believe there are ways of > getting an opengl context to work without trying to pop up an XWindows > window. I believe the typical way to do this is to use a framebuffer. A > google search "opengl without x11" turns up lots of hits for doing such a > thing. Instructions for doing such a thing are also in the Mayavi manual: > http://code.enthought.com/projects/mayavi/docs/development/html/mayavi/tips.html#rendering-using-the-virtual-framebuffer > > I've never done this, though. Whether or not OpenGL is the problem here, > using a framebuffer might solve the problem. Maybe. Assuming you are using > Ubuntu, can you try following the instructions in the Mayavi manual?
I don't think this makes any sense. Matlab is fully capable of saving images to file using the "saveas" command, as explained in detail I think earlier in this very thread. -- William > > $ sudo apt-get install xvfb > ssh in as the sage worksheet user > $ xvfb-run matlab > > then try the plotting command > > Jason > > -- > To post to this group, send email to sage-support@googlegroups.com > To unsubscribe from this group, send email to > sage-support+unsubscr...@googlegroups.com > For more options, visit this group at > http://groups.google.com/group/sage-support > URL: http://www.sagemath.org > -- William Stein Professor of Mathematics University of Washington http://wstein.org -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
