From: gary r. <gr...@bi...> - 2011-08-19 02:57:59
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Usually imshow(arr, aspect='auto') or imshow(arr, aspect=2.0) will display the image with pixels having some aspect ratio other than 1:1 However, I cannot get this to work when using imshow within an AxesGrid axis. Is there a way to get an array shown with imshow() within an AxesGrid axis to have a pixel aspect other than 1:1 ? If not, is there a simple way to add a shared colorbar when using subplots() ? Gary |
From: <gr...@bi...> - 2011-08-20 05:43:34
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Usually imshow(arr, aspect='auto') or imshow(arr, aspect=2.0) will display the image with pixels having some aspect ratio other than 1:1 However, I cannot get this to work when using imshow within an AxesGrid axis. Is there a way to get an array shown with imshow() within an AxesGrid axis to have a pixel aspect other than 1:1 ? If not, is there a simple way to add a shared colorbar when using subplots() ? Gary |
From: Eric F. <ef...@ha...> - 2011-08-20 07:48:45
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On 08/19/2011 07:43 PM, gr...@bi... wrote: > Usually imshow(arr, aspect='auto') or imshow(arr, aspect=2.0) will > display the image with pixels having some aspect ratio other than 1:1 > However, I cannot get this to work when using imshow within an AxesGrid axis. > Is there a way to get an array shown with imshow() within an AxesGrid > axis to have a pixel aspect other than 1:1 ? > If not, is there a simple way to add a shared colorbar when using subplots() ? By shared colorbar, do you mean something like this? http://matplotlib.sourceforge.net/examples/pylab_examples/multi_image.html It is using ordinary axes, and is a bit more complex than needed for many purposes. Eric > > Gary > > ------------------------------------------------------------------------------ > Get a FREE DOWNLOAD! and learn more about uberSVN rich system, > user administration capabilities and model configuration. Take > the hassle out of deploying and managing Subversion and the > tools developers use with it. http://p.sf.net/sfu/wandisco-d2d-2 > _______________________________________________ > Matplotlib-users mailing list > Mat...@li... > https://lists.sourceforge.net/lists/listinfo/matplotlib-users |
From: Jae-Joon L. <lee...@gm...> - 2011-08-20 08:49:38
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If you want aspect="auto", this must also be set when you create ImageGrid. A simple example is attached. If you want a fixed aspect other than 1, it is doable but gets a bit tricky. Let me know if this is what you want. Regards, -JJ from mpl_toolkits.axes_grid1 import ImageGrid fig = plt.figure(1) grid = ImageGrid(fig, 111, (2, 1), aspect=False, label_mode='L', cbar_mode="single", ) arr = np.arange(100).reshape((10, 10)) im1 = grid[0].imshow(arr, aspect="auto") im2 = grid[1].imshow(arr, aspect="auto") grid[0].cax.colorbar(im1) On Sat, Aug 20, 2011 at 2:43 PM, gr...@bi... <gr...@bi...> wrote: > Usually imshow(arr, aspect='auto') or imshow(arr, aspect=2.0) will > display the image with pixels having some aspect ratio other than 1:1 > However, I cannot get this to work when using imshow within an AxesGrid axis. > Is there a way to get an array shown with imshow() within an AxesGrid > axis to have a pixel aspect other than 1:1 ? > If not, is there a simple way to add a shared colorbar when using subplots() ? > > Gary > > ------------------------------------------------------------------------------ > Get a FREE DOWNLOAD! and learn more about uberSVN rich system, > user administration capabilities and model configuration. Take > the hassle out of deploying and managing Subversion and the > tools developers use with it. http://p.sf.net/sfu/wandisco-d2d-2 > _______________________________________________ > Matplotlib-users mailing list > Mat...@li... > https://lists.sourceforge.net/lists/listinfo/matplotlib-users > |
From: gary r. <gr...@bi...> - 2011-08-20 11:13:24
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Thanks Eric and JJ, Both of your answers are solutions to my problem actually. I spent a while trying to figure this out and didn't get anywhere. This was an exercise in frustration with matplotlib's documentation. Thankfully this list and its members are here to save us. I assumed it was just a simple flag or option I had missed and this turned out to be the case. I had even tried setting aspect=False when creating my AxesGrid object and setting aspect="auto", but because I was poking around in the dark, I must not have set both at the same time. I also thought I'd seen an example of this somewhere, which is what Eric pointed out, but even thinking I'd seen it, I couldn't find it again. I had looked in the gallery but missed the example - looking back at the gallery now, I think it might be because every other related example uses the jet colour scheme and it simply didn't register. regards, Gary On Sat, Aug 20, 2011 at 6:49 PM, Jae-Joon Lee <lee...@gm...> wrote: > If you want aspect="auto", this must also be set when you create ImageGrid. > A simple example is attached. > If you want a fixed aspect other than 1, it is doable but gets a bit > tricky. Let me know if this is what you want. > > Regards, > > -JJ > > > > from mpl_toolkits.axes_grid1 import ImageGrid > > fig = plt.figure(1) > > grid = ImageGrid(fig, 111, (2, 1), > aspect=False, > label_mode='L', cbar_mode="single", > ) > > arr = np.arange(100).reshape((10, 10)) > im1 = grid[0].imshow(arr, aspect="auto") > im2 = grid[1].imshow(arr, aspect="auto") > > grid[0].cax.colorbar(im1) > > > > > On Sat, Aug 20, 2011 at 2:43 PM, gr...@bi... > <gr...@bi...> wrote: >> Usually imshow(arr, aspect='auto') or imshow(arr, aspect=2.0) will >> display the image with pixels having some aspect ratio other than 1:1 >> However, I cannot get this to work when using imshow within an AxesGrid axis. >> Is there a way to get an array shown with imshow() within an AxesGrid >> axis to have a pixel aspect other than 1:1 ? >> If not, is there a simple way to add a shared colorbar when using subplots() ? >> >> Gary >> >> ------------------------------------------------------------------------------ >> Get a FREE DOWNLOAD! and learn more about uberSVN rich system, >> user administration capabilities and model configuration. Take >> the hassle out of deploying and managing Subversion and the >> tools developers use with it. http://p.sf.net/sfu/wandisco-d2d-2 >> _______________________________________________ >> Matplotlib-users mailing list >> Mat...@li... >> https://lists.sourceforge.net/lists/listinfo/matplotlib-users >> > |