Hi All, I have changed the backend in matplotlibrc from GTKAgg to WX
#### CONFIGURATION BEGINS HERE # the default backend; one of GTK GTKAgg GTKCairo FltkAgg QtAgg TkAgg # WX WXAgg Agg Cairo GD GDK Paint PS PDF SVG Template #backend : GTKAgg backend : WX Now I get python -i nlp_3.py --verbose-helpful $HOME=/home/nwagner CONFIGDIR=/home/nwagner/.matplotlib Bad key "text.markup" on line 154 in /home/nwagner/.matplotlib/matplotlibrc. You probably need to get an updated matplotlibrc file from http://matplotlib.sf.net/matplotlibrc or from the matplotlib source distribution matplotlib data path /usr/local/lib64/python2.5/site-packages/matplotlib/mpl-data loaded rc file /home/nwagner/.matplotlib/matplotlibrc matplotlib version 0.98.0 verbose.level helpful interactive is False units is False platform is linux2 Using fontManager instance from /home/nwagner/.matplotlib/fontManager.cache numerix numpy 1.2.0.dev5282 backend WX version 2.6.3.3 ----------------------------------------------------- starting solver ipopt (license: CPL) with problem nlp3 [PyIPOPT] Ipopt will use Hessian approximation. [PyIPOPT] nele_hess is 0 iter objFunVal log10(maxResidual) 0 -1.640e+02 0.81 Traceback (most recent call last): File "/usr/local/lib64/python2.5/site-packages/matplotlib/backends/backend_wx.py", line 1051, in _onSize self.draw() File "/usr/local/lib64/python2.5/site-packages/matplotlib/backends/backend_wx.py", line 889, in draw self.figure.draw(self.renderer) File "/usr/local/lib64/python2.5/site-packages/matplotlib/figure.py", line 745, in draw if self.frameon: self.figurePatch.draw(renderer) File "/usr/local/lib64/python2.5/site-packages/matplotlib/patches.py", line 222, in draw gc = renderer.new_gc() File "/usr/local/lib64/python2.5/site-packages/matplotlib/backends/backend_wx.py", line 359, in new_gc self.gc = GraphicsContextWx(self.bitmap, self) File "/usr/local/lib64/python2.5/site-packages/matplotlib/backends/backend_wx.py", line 456, in __init__ gfx_ctx = wx.GraphicsContext.Create(dc) AttributeError: 'module' object has no attribute 'GraphicsContext' Traceback (most recent call last): File "/usr/local/lib64/python2.5/site-packages/matplotlib/backends/backend_wx.py", line 1051, in _onSize self.draw() File "/usr/local/lib64/python2.5/site-packages/matplotlib/backends/backend_wx.py", line 889, in draw self.figure.draw(self.renderer) File "/usr/local/lib64/python2.5/site-packages/matplotlib/figure.py", line 745, in draw if self.frameon: self.figurePatch.draw(renderer) File "/usr/local/lib64/python2.5/site-packages/matplotlib/patches.py", line 222, in draw gc = renderer.new_gc() File "/usr/local/lib64/python2.5/site-packages/matplotlib/backends/backend_wx.py", line 359, in new_gc self.gc = GraphicsContextWx(self.bitmap, self) File "/usr/local/lib64/python2.5/site-packages/matplotlib/backends/backend_wx.py", line 456, in __init__ gfx_ctx = wx.GraphicsContext.Create(dc) AttributeError: 'module' object has no attribute 'GraphicsContext' Traceback (most recent call last): File "/usr/local/lib64/python2.5/site-packages/matplotlib/backends/backend_wx.py", line 1051, in _onSize self.draw() File "/usr/local/lib64/python2.5/site-packages/matplotlib/backends/backend_wx.py", line 889, in draw self.figure.draw(self.renderer) File "/usr/local/lib64/python2.5/site-packages/matplotlib/figure.py", line 745, in draw if self.frameon: self.figurePatch.draw(renderer) File "/usr/local/lib64/python2.5/site-packages/matplotlib/patches.py", line 222, in draw gc = renderer.new_gc() File "/usr/local/lib64/python2.5/site-packages/matplotlib/backends/backend_wx.py", line 359, in new_gc self.gc = GraphicsContextWx(self.bitmap, self) File "/usr/local/lib64/python2.5/site-packages/matplotlib/backends/backend_wx.py", line 456, in __init__ gfx_ctx = wx.GraphicsContext.Create(dc) AttributeError: 'module' object has no attribute 'GraphicsContext' Traceback (most recent call last): File "nlp_3.py", line 65, in <module> r = p.solve(solver) File "/usr/local/lib64/python2.5/site-packages/scikits/openopt/Kernel/BaseProblem.py", line 239, in solve return runProbSolver(self, solvers, *args, **kwargs) File "/usr/local/lib64/python2.5/site-packages/scikits/openopt/Kernel/runProbSolver.py", line 221, in runProbSolver solver(p) File "/usr/local/lib64/python2.5/site-packages/scikits/openopt/solvers/CoinOr/ipopt_oo.py", line 78, in __solver__ p.iterfcn(p.x0) File "/usr/local/lib64/python2.5/site-packages/scikits/openopt/Kernel/BaseProblem.py", line 57, in <lambda> self.iterfcn = lambda *args: ooIter(self, *args)# this parameter is only for OpenOpt developers, not common users File "/usr/local/lib64/python2.5/site-packages/scikits/openopt/Kernel/ooIter.py", line 78, in ooIter for df in p.graphics.drawFuncs: df(p) File "/usr/local/lib64/python2.5/site-packages/scikits/openopt/Kernel/ooGraphics.py", line 127, in oodraw if self.nSubPlots>1: pylab.subplot(self.nSubPlots, 1, 1) File "/usr/local/lib64/python2.5/site-packages/matplotlib/pyplot.py", line 518, in subplot fig = gcf() File "/usr/local/lib64/python2.5/site-packages/matplotlib/pyplot.py", line 210, in gcf return figure() File "/usr/local/lib64/python2.5/site-packages/matplotlib/pyplot.py", line 200, in figure draw_if_interactive() File "/usr/local/lib64/python2.5/site-packages/matplotlib/backends/backend_wx.py", line 1167, in draw_if_interactive figManager.canvas.draw() File "/usr/local/lib64/python2.5/site-packages/matplotlib/backends/backend_wx.py", line 889, in draw self.figure.draw(self.renderer) File "/usr/local/lib64/python2.5/site-packages/matplotlib/figure.py", line 745, in draw if self.frameon: self.figurePatch.draw(renderer) File "/usr/local/lib64/python2.5/site-packages/matplotlib/patches.py", line 222, in draw gc = renderer.new_gc() File "/usr/local/lib64/python2.5/site-packages/matplotlib/backends/backend_wx.py", line 359, in new_gc self.gc = GraphicsContextWx(self.bitmap, self) File "/usr/local/lib64/python2.5/site-packages/matplotlib/backends/backend_wx.py", line 456, in __init__ gfx_ctx = wx.GraphicsContext.Create(dc) AttributeError: 'module' object has no attribute 'GraphicsContext' Any idea ? 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