hello Jason, This doesn't work either... :( matlab doesn't even start with xvfb-run command. it gives lot of errors.
~Vinod On May 28, 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/mayav... > > 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? > > $ 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
