[Matplotlib-users] Warning from pylab.plot on Linux
Dear Matplotlib Folks, When I run pylab.plot, I get a weird warning: ** (python:20754): WARNING **: Couldn't connect to system bus ** (python:20754): WARNING **: Couldn't connect to system bus (Note that this was copied by hand because the system on which I run Matplotlib is currently unable to connect to the global internet.) The first line really is repeated. The number after "python:" changes from one instance of the warning to another. I am running: Red Hat Enterprise Linux ES release 4 (Nahant Update 3) At least, that is what is in /etc/redhat-release. The warning is not fatal and I can display what I attempted to plot with pylab.show. However, the warning has a significant impact on the interactive usability of Python and matplotlib as a replacement for Matlab. Anyone have any suggestions or observations? Yours, David Sigeti -- View this message in context: http://www.nabble.com/Warning-from-pylab.plot-on-Linux-tp22793709p22793709.html Sent from the matplotlib - users mailing list archive at Nabble.com. -- ___ Matplotlib-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Warning from pylab.plot on Linux
Dear Mike and Jouni, Since my post from yesterday, I have discovered that I was using the WXApp backend and that using the TkApp backend fixed the problem. Thanks for the help and sorry about the naive question. I am almost completely new to Matplotlib and am only now getting my bearings. That said, I have another question: Are there any important implications to the spurious warnings coming from WXApp? I don't know how functional WXApp is expected to be at this point nor even if this problem really precludes using it. For all I know there might be a simple work-around or there might really be no reason at all to use WXApp rather than TkApp. Any light that you can shed here would be much appreciated. A couple of further observations: * As I pointed out, pyplot.show appears to work fine in spite of the warning message. The resulting plot window, however, shows a number of peculiarities in behavior and seems to be missing functionality that the corresponding TkApp window has. All this suggests to me that the WXApp backend may not really be fully functional yet. Any observations or comments? * wxPython itself seems to work fine. At least, that is what I see from running the demos. Again, thanks for the help and any further comments, observations, advice will be much appreciated. Yours, David At 08:41 AM 3/31/2009, Michael Droettboom wrote: Which backend are you using? I suspect this is actually a bug in the GUI framework being used, which we could rule out by running a simple script to do something basic (like show a window) and see if we get the same warning. Mike sigeti wrote: Dear Matplotlib Folks, When I run pylab.plot, I get a weird warning: ** (python:20754): WARNING **: Couldn't connect to system bus ** (python:20754): WARNING **: Couldn't connect to system bus (Note that this was copied by hand because the system on which I run Matplotlib is currently unable to connect to the global internet.) The first line really is repeated. The number after "python:" changes from one instance of the warning to another. I am running: Red Hat Enterprise Linux ES release 4 (Nahant Update 3) At least, that is what is in /etc/redhat-release. The warning is not fatal and I can display what I attempted to plot with pylab.show. However, the warning has a significant impact on the interactive usability of Python and matplotlib as a replacement for Matlab. Anyone have any suggestions or observations? Yours, David Sigeti -- Michael Droettboom Science Software Branch Operations and Engineering Division Space Telescope Science Institute Operated by AURA for NASA --- Dr. David E. Sigeti Phone: 505-667-9239 E-mail: [email protected] Surface mail: MS-F644, Los Alamos National Laboratory, Los Alamos, NM 87545 USA -- ___ Matplotlib-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Warning from pylab.plot on Linux
Friends, Oops! "WXAgg" and "TkAgg" rather than "WXApp" and "TkApp", of course. I did say that I was just getting my bearings. Yours, David At 12:13 PM 3/31/2009, David E. Sigeti wrote: Dear Mike and Jouni, Since my post from yesterday, I have discovered that I was using the WXApp backend and that using the TkApp backend fixed the problem. Thanks for the help and sorry about the naive question. I am almost completely new to Matplotlib and am only now getting my bearings. That said, I have another question: Are there any important implications to the spurious warnings coming from WXApp? I don't know how functional WXApp is expected to be at this point nor even if this problem really precludes using it. For all I know there might be a simple work-around or there might really be no reason at all to use WXApp rather than TkApp. Any light that you can shed here would be much appreciated. A couple of further observations: * As I pointed out, pyplot.show appears to work fine in spite of the warning message. The resulting plot window, however, shows a number of peculiarities in behavior and seems to be missing functionality that the corresponding TkApp window has. All this suggests to me that the WXApp backend may not really be fully functional yet. Any observations or comments? * wxPython itself seems to work fine. At least, that is what I see from running the demos. Again, thanks for the help and any further comments, observations, advice will be much appreciated. Yours, David At 08:41 AM 3/31/2009, Michael Droettboom wrote: Which backend are you using? I suspect this is actually a bug in the GUI framework being used, which we could rule out by running a simple script to do something basic (like show a window) and see if we get the same warning. Mike sigeti wrote: Dear Matplotlib Folks, When I run pylab.plot, I get a weird warning: ** (python:20754): WARNING **: Couldn't connect to system bus ** (python:20754): WARNING **: Couldn't connect to system bus (Note that this was copied by hand because the system on which I run Matplotlib is currently unable to connect to the global internet.) The first line really is repeated. The number after "python:" changes from one instance of the warning to another. I am running: Red Hat Enterprise Linux ES release 4 (Nahant Update 3) At least, that is what is in /etc/redhat-release. The warning is not fatal and I can display what I attempted to plot with pylab.show. However, the warning has a significant impact on the interactive usability of Python and matplotlib as a replacement for Matlab. Anyone have any suggestions or observations? Yours, David Sigeti -- Michael Droettboom Science Software Branch Operations and Engineering Division Space Telescope Science Institute Operated by AURA for NASA --- Dr. David E. Sigeti Phone: 505-667-9239 E-mail: [email protected] Surface mail: MS-F644, Los Alamos National Laboratory, Los Alamos, NM 87545 USA --- Dr. David E. Sigeti Phone: 505-667-9239 E-mail: [email protected] Surface mail: MS-F644, Los Alamos National Laboratory, Los Alamos, NM 87545 USA -- ___ Matplotlib-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/matplotlib-users
