I'm using a lenovo laptop with fedora 16. It has 2.9 GiB memory and 4 intel core CPUs @ 2.3GHz each. Available disk space is 147.9GiB. numpy 1.6.0 matplotlib 1.0.1
On 6 Feb 2012, at 10:29, Fabrice Silva wrote: > On Sat, Feb 4, 2012 at 9:44 AM, Fabrice Silva <si...@lma.cnrs- > mrs.fr> wrote: >> Le vendredi 03 février 2012 à 17:39 +0000, David Craig a >> écrit : >>> sure how to get it to plot the outputs from specgram. I use >>> specgram as follows, >>> Pxx, freqs, bins, im = plt.specgram(......) >>> what am I trying imshow?? >> >> >> plt.specgram computes the spectrogram and when calls >> imshow to display >> the resulting array into an image >> >> Please tell the shape of Pxx, and try the following >> >> import numpy as np >> import matplotlib.pyplot as plt >> a = np.empty((12000, 14400), dtype=float) >> plt.imshow(a) >> plt.show() > > Le samedi 04 février 2012 à 10:30 +0000, David Craig a écrit : >> Pxx has shape (6001, 1430) and when I tried the lines of code it >> returned the following memory error, >> >> Traceback (most recent call last): >> File "/usr/lib/python2.7/site-packages/matplotlib/backends/ >> backend_gtk.py", line 394, in expose_event >> self._render_figure(self._pixmap, w, h) >> File "/usr/lib/python2.7/site-packages/matplotlib/backends/ >> backend_gtkagg.py", line 75, in _render_figure >> FigureCanvasAgg.draw(self) >> File "/usr/lib/python2.7/site-packages/matplotlib/backends/ >> backend_agg.py", line 394, in draw >> self.figure.draw(self.renderer) >> File "/usr/lib/python2.7/site-packages/matplotlib/artist.py", >> line 55, in draw_wrapper >> draw(artist, renderer, *args, **kwargs) >> File "/usr/lib/python2.7/site-packages/matplotlib/figure.py", >> line 798, in draw >> func(*args) >> File "/usr/lib/python2.7/site-packages/matplotlib/artist.py", >> line 55, in draw_wrapper >> draw(artist, renderer, *args, **kwargs) >> File "/usr/lib/python2.7/site-packages/matplotlib/axes.py", line >> 1946, in draw >> a.draw(renderer) >> File "/usr/lib/python2.7/site-packages/matplotlib/artist.py", >> line 55, in draw_wrapper >> draw(artist, renderer, *args, **kwargs) >> File "/usr/lib/python2.7/site-packages/matplotlib/image.py", >> line 354, in draw >> im = self.make_image(renderer.get_image_magnification()) >> File "/usr/lib/python2.7/site-packages/matplotlib/image.py", >> line 569, in make_image >> transformed_viewLim) >> File "/usr/lib/python2.7/site-packages/matplotlib/image.py", >> line 201, in _get_unsampled_image >> x = self.to_rgba(self._A, self._alpha) >> File "/usr/lib/python2.7/site-packages/matplotlib/cm.py", line >> 193, in to_rgba >> x = self.norm(x) >> File "/usr/lib/python2.7/site-packages/matplotlib/colors.py", >> line 802, in __call__ >> val = ma.asarray(value).astype(np.float) >> File "/usr/lib/python2.7/site-packages/numpy/ma/core.py", line >> 2908, in astype >> output = self._data.astype(newtype).view(type(self)) >> MemoryError > > Please, answer on the mailing list, > It confirms that the troubles lie in the rendering of images. Could > you > tell the versions of numpy and matplotlib you are using, and the > characteristics of the computer you are working on ? > > > ---------------------------------------------------------------------- > -------- > Try before you buy = See our experts in action! > The most comprehensive online learning library for Microsoft > developers > is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, > MVC3, > Metro Style Apps, more. Free future releases when you subscribe now! > http://p.sf.net/sfu/learndevnow-dev2 > _______________________________________________ > Matplotlib-users mailing list > Matplotlib-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/matplotlib-users ------------------------------------------------------------------------------ Try before you buy = See our experts in action! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-dev2 _______________________________________________ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
