Daniel Fulger, on 2011-01-27 18:16, wrote: > Dear all, > > contourset = pyplot.contour(..) > > calculates the contourset but also grabs whatever figure is currently > active *somewhere* in the entire code > and whichever scope it was created. The contours are plotted into it. > > While I could possibly live with that, I would really like to > suppress any plotting and grabbig of focus. Only the contourset > should be calculated. > > I can't find anything that describes this. Everybody wants the plot, > not me. > > I would like to avoid hte workaround to ask for the currently active > figure (if!! there is one at all), store the number, and later return > focus. Is there no switch parameter (in pyplot or for contour at > least) that turns plotting off?
Hi Daniel, I'm not sure if this gets at what you're asking for, but if you just want the contours plotted on a figure other than the currently active one, grab a handle to some other axes and call contour from the axes itself (the parameters are the same). Here's what I mean: ----------- f,ax =plt.subplots(1,1) #grab handles to figure and axes # or, if you're using an older version of matplotlib, do: # f=plt.figure();ax=plt.subplot(1,1,1) f2,ax2 =plt.subplots(1,1) # "f" no longer active figure ... contourset = ax.contour(...) # draw to the old figure "f" ----------- You can read more about the difference between using pyplot and using the object-oriented api here: http://matplotlib.sourceforge.net/faq/usage_faq.html On the other hand, if you just want the contour to not show up, you can pass it alpha=0.0 to make it completely transparent and invisible (but it's still there) contourset = pyplot.contour(.., alpha=0.0) # later call contourset.set_alpha(1.0) to make visible again best, -- Paul Ivanov 314 address only used for lists, off-list direct email at: http://pirsquared.org | GPG/PGP key id: 0x0F3E28F7
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