Re: [Matplotlib-users] hexbin log bins and colorbar
Hi John, Eric, sorry to bug again, but was either of you able to reproduce my findings that in svn head the tick labels don't get printed if the formatter changes them to be outside the range of the axis? Cheers, Jan On Fri, Feb 19, 2010 at 10:40 AM, Jan Strube curious...@gmail.com wrote: Hi John, I am now at r8141. I don't see a difference. There's a one at the bottom of the scale, that's all. I am copying and pasting the code in your other email into a python console. It's a bit strange, because when I put in a print statement, I see that the method gets called a number of times... [edit] I see what's going on. If I replace vv with a large constant (like 100), it never gets printed. If I replace vv with a small constant (like 1), that is below the range of the scale, it does get printed at each tick.[/edit] My setup is kubuntu karmic, dependencies listed below. I have removed my matplotlibrc, but the result is the same. I am attaching it nevertheless... Cheers, Jan BUILDING MATPLOTLIB matplotlib: 1.0.svn python: 2.6.4 (r264:75706, Nov 2 2009, 14:44:17) [GCC 4.4.1] platform: linux2 REQUIRED DEPENDENCIES numpy: 1.3.0 freetype2: 9.20.3 OPTIONAL BACKEND DEPENDENCIES libpng: 1.2.37 Tkinter: no * TKAgg requires Tkinter wxPython: no * wxPython not found pkg-config: looking for pygtk-2.0 gtk+-2.0 * Package pygtk-2.0 was not found in the pkg-config * search path. Perhaps you should add the directory * containing `pygtk-2.0.pc' to the PKG_CONFIG_PATH * environment variable No package 'pygtk-2.0' found * Package gtk+-2.0 was not found in the pkg-config * search path. Perhaps you should add the directory * containing `gtk+-2.0.pc' to the PKG_CONFIG_PATH * environment variable No package 'gtk+-2.0' found * You may need to install 'dev' package(s) to * provide header files. Gtk+: no * Could not find Gtk+ headers in any of * '/usr/local/include', '/usr/include', '.' Mac OS X native: no Qt: no Qt4: Qt: 4.5.2, PyQt4: 4.6 Cairo: 1.8.6 OPTIONAL DATE/TIMEZONE DEPENDENCIES datetime: present, version unknown dateutil: 1.4.1 pytz: 2009l OPTIONAL USETEX DEPENDENCIES dvipng: 1.12 ghostscript: 8.70 latex: 3.1415926 pdftops: 0.12.0 [Edit setup.cfg to suppress the above messages] On Thu, Feb 18, 2010 at 10:29 PM, John Hunter jdh2...@gmail.com wrote: On Thu, Feb 18, 2010 at 4:06 PM, Jan Strube curious...@gmail.com wrote: Hi John, thanks for trying this also. Yes, I think it's a bug that not the scale is log, but the data is. Unfortunately, the solution really doesn't work for me. Please see the attached screenshot. (Yes, it still says log_10 entries, but the code is otherwise the same) In [2]: matplotlib.__version__ Out[2]: '1.0.svn' This is r8063, I think. Strange that I get different results. Could this be a backend problem? I use PyQT4. I'd be happy to also update from svn if you think that helps. I'm running svn but not svn HEAD -- you should try updating to HEAD and I will do the same later (unfortunately HEAD is broken on my work machine (solaris, python2.4) because of the CXX upgrade I put in some time ago. I think I am on r8083. I do not think this difference could be caused by a backend or GUI version difference as all of the formatting logic happens in the frontend. If we are on the same version of svn, we should be getting the same tick labels. JDH -- Download Intel#174; Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net
[Matplotlib-users] dropdown menu
Hello, Now that I have found the awesome widgets in matplotlib I want more: dropdown menus? will that come at some stage? Cheers Wolfgang -- Download Intel#174; Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] dropdown menu
On Mon, Feb 22, 2010 at 4:26 AM, Wolfgang Kerzendorf wkerz...@mso.anu.edu.au wrote: Hello, Now that I have found the awesome widgets in matplotlib I want more: dropdown menus? will that come at some stage? I have worked on it, but not finished it. I put the code in svn under examples http://matplotlib.sourceforge.net/examples/widgets/menu.html but it would be migrated to matplotlib.widgets once it is completed. If you or someone else wants to run with it, that would be great. It would be handy to have this functionality. I wrote this before JJ provided his nice containers in offsetbox, and it should probably be reworked to use the OffsetbOX JDH -- Download Intel#174; Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] label not print theta symbol
Hi, How do I print as label of an axis the Theta symbol - θ? you can take a look in the docs, there are examples how to use LaTeX for the labels. You get the letter in LaTeX with \theta or \Theta. -- Download Intel#174; Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] label not print theta symbol
On Mon, Feb 22, 2010 at 8:36 AM, Philipp Bender li...@rootiniert.de wrote: Hi, How do I print as label of an axis the Theta symbol - θ? you can take a look in the docs, there are examples how to use LaTeX for the labels. You get the letter in LaTeX with \theta or \Theta. But be sure to either use raw strings or escape properly: r\theta or \\theta -- Download Intel#174; Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] label not print theta symbol
thanks both! very nice LaTeX 2010/2/22 Darren Dale dsdal...@gmail.com On Mon, Feb 22, 2010 at 8:36 AM, Philipp Bender li...@rootiniert.de wrote: Hi, How do I print as label of an axis the Theta symbol - θ? you can take a look in the docs, there are examples how to use LaTeX for the labels. You get the letter in LaTeX with \theta or \Theta. But be sure to either use raw strings or escape properly: r\theta or \\theta -- Download Intel#174; Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- Download Intel#174; Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] 101 Point Segmentation Fault
Can you provide a gdb backtrace? Run gdb python, then at the gdb prompt type run -c 'import pylab; pylab.clf(); pylab.plot(pylab.sin(range(101))); pylab.xlabel(Test X); pylab.ylabel(Test Y); pylab.show()'. After it segfaults, type bt to get a backtrace, and copy-and-paste it to this list. Mike Joseph D Cali wrote: I am encountering the following error: python -c 'import pylab; pylab.clf(); pylab.plot(pylab.sin(range(101))); pylab.xlabel(Test X); pylab.ylabel(Test Y); pylab.show()' /local_home/calijos/usr/lib/python2.6/site-packages/matplotlib/backends/backend_gtk.py:621: DeprecationWarning: Use the new widget gtk.Tooltip self.tooltips = gtk.Tooltips() Segmentation fault - But when I run the following command, I encounter no errors and plot is as expected: python -c 'import pylab; pylab.clf(); pylab.plot(pylab.sin(range(100))); pylab.xlabel(Test X); pylab.ylabel(Test Y); pylab.show()' I tried several other plots, any plots with less than 100 points work correctly, any plots with more than 100 points segfault. - My current system setup is: System: Ubuntu 9.04 x64 Python: Python 2.6.2 Matplotlib: 0.99.1 (tied 0.99.1.1, 0.99.1.2, and latest SVN version: 8126) Numpy Version: 1.5.0.dev8106 I have been a long time Matplotlib user, and have never encountered this issue. It started whenever I updated numpy and scipy. However, reverting to the old version does not seem to fix the situation. I also cannot get numpy to crash on its own. All my software works when plotting is disabled. Has anyone else experienced this or similar problems during an upgrade? Joe -- SOLARIS 10 is the OS for Data Centers - provides features such as DTrace, Predictive Self Healing and Award Winning ZFS. Get Solaris 10 NOW http://p.sf.net/sfu/solaris-dev2dev ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- Michael Droettboom Science Software Branch Operations and Engineering Division Space Telescope Science Institute Operated by AURA for NASA -- Download Intel#174; Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Interpolation between points during plot()
The drawing between the points is done using the regular line drawing commands of the backend. So there isn't really any low-level control over how the line between points is drawn. As a workaround, however, you can interpolate the data yourself and just pass more points to matplotlib. You may also be interested in this document if you're implementing new geodesics (though it doesn't solve the interpolation problem you describe): http://matplotlib.sourceforge.net/devel/add_new_projection.html Mike T J wrote: Hi, When plotting, plot(x, y, marker=-) and its similar markers, what functionality in MPL is responsible for interpolating between the points? My naive guess is that interpolation is done in display coordinates since everything looks nice even when zooming in.I inquire because I'd like to make interpolation between two points follow some other path between the two points. In other words, I'd like to make a plot structure which will follow a different type of geodesic. Any tips or pointers in the right direction would be greatly appreciated. Thanks! -- SOLARIS 10 is the OS for Data Centers - provides features such as DTrace, Predictive Self Healing and Award Winning ZFS. Get Solaris 10 NOW http://p.sf.net/sfu/solaris-dev2dev ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- Michael Droettboom Science Software Branch Operations and Engineering Division Space Telescope Science Institute Operated by AURA for NASA -- Download Intel#174; Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Pydot graphs in matplotlib?
Erik Tollerud wrote: I'm curious if anyone knows a good way to embed pydot (http://code.google.com/p/pydot/) graphs (or really, any graphviz-style graphs) inside matplotlib somehow. I could easily write out a png or something from pydot and then imshow it, but that seems very kludgy. Is there some way to load svg or other vector data into matplotlib to be shown inside a figure? Unfortunately not. It is possible to cut-and-paste graphviz SVG into a matplotlib SVG using Inkscape, but that's fairly kludgy also and can't be automated. It would be nice to have a graphviz importer for matplotlib (something that would convert a dot stream to matplotlib artists), but that's a mid-sized development effort... It wouldn't consider it extremely difficult, but it would need someone to step up to implement it. Mike -- Michael Droettboom Science Software Branch Operations and Engineering Division Space Telescope Science Institute Operated by AURA for NASA -- Download Intel#174; Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] Graph gains a blank space at the right hand side
Hi all,
I'm having some trouble with graphs ending up wider than I'd like. I'm
using matplotlib 0.98.5.2. If I do as follows:
import pylab
pylab.clf()
figure2 = pylab.figure(1)
axessubplot2 = pylab.subplot(111)
axessubplot2.fill_between([0, 1, 2, 3, 4, 5, 6], [0, 0, 0, 0, 0, 0,
0], [1, 1, 1, 1, 1, 0, 1], color='green')
axessubplot2.fill_between([4, 5, 6], [1, 0, 1], [1, 1, 1], color='red')
figure2.savefig('graph.png', dpi=100)
then the X-axis of the graph goes up to 7 and I get a white region at
the right-hand side, even though none of my calls have provided any
values for x6. If I for example eliminate the first point and instead
do
import pylab
pylab.clf()
figure2 = pylab.figure(1)
axessubplot2 = pylab.subplot(111)
axessubplot2.fill_between([0, 1, 2, 3, 4, 5], [0, 0, 0, 0, 0, 0], [1,
1, 1, 1, 0, 1], color='green')
axessubplot2.fill_between([3, 4, 5], [1, 0, 1], [1, 1, 1], color='red')
figure2.savefig('graph.png', dpi=100)
then all is well and I don't get such a region.
So I guess I have two questions.
1) Is this a bug? It certainly feels like one...
2) Is there a workaround / what should I do instead?
Regards,
Geoff Bache
--
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Re: [Matplotlib-users] Clipping
The coordinates for Circle (and all patches) are in data coordinates. So the (300, 300) is relative to the values in the data itself. When adding a patch directly to a plot, however, the limits may not automatically update, so you may need to call axes.set_xlim or axes.set_ylim to adjust them to make the circle visible. Mike Ryan May wrote: On Wed, Feb 17, 2010 at 6:44 PM, David Arnold dwarnol...@suddenlink.net wrote: All, I'm looking at: http://matplotlib.sourceforge.net/examples/api/clippath_demo.html But I cannot figure out: patch=patches.Circle((300, 300), radius=100) Where precisely is (300,300)? I believe it's in window coordinates (pixels), with 0,0 being the lower left. Ryan -- Michael Droettboom Science Software Branch Operations and Engineering Division Space Telescope Science Institute Operated by AURA for NASA -- Download Intel#174; Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] 101 Point Segmentation Fault
I will be sure to use gdb and bt to get that information next time I encounter the segmentation fault or any other error that I post to list. I tried going back to the numpy.dev8106 version just now in an attempt to recreate the conditions of the error, but I was unsuccessful in generating any segmentation faults. My guess is that I made some novice mistake when upgrading the libraries from source. On Mon, 2010-02-22 at 10:16 -0500, Michael Droettboom wrote: Can you provide a gdb backtrace? Run gdb python, then at the gdb prompt type run -c 'import pylab; pylab.clf(); pylab.plot(pylab.sin(range(101))); pylab.xlabel(Test X); pylab.ylabel(Test Y); pylab.show()'. After it segfaults, type bt to get a backtrace, and copy-and-paste it to this list. Mike Joseph D Cali wrote: I am encountering the following error: python -c 'import pylab; pylab.clf(); pylab.plot(pylab.sin(range(101))); pylab.xlabel(Test X); pylab.ylabel(Test Y); pylab.show()' /local_home/calijos/usr/lib/python2.6/site-packages/matplotlib/backends/backend_gtk.py:621: DeprecationWarning: Use the new widget gtk.Tooltip self.tooltips = gtk.Tooltips() Segmentation fault - But when I run the following command, I encounter no errors and plot is as expected: python -c 'import pylab; pylab.clf(); pylab.plot(pylab.sin(range(100))); pylab.xlabel(Test X); pylab.ylabel(Test Y); pylab.show()' I tried several other plots, any plots with less than 100 points work correctly, any plots with more than 100 points segfault. - My current system setup is: System: Ubuntu 9.04 x64 Python: Python 2.6.2 Matplotlib: 0.99.1 (tied 0.99.1.1, 0.99.1.2, and latest SVN version: 8126) Numpy Version: 1.5.0.dev8106 I have been a long time Matplotlib user, and have never encountered this issue. It started whenever I updated numpy and scipy. However, reverting to the old version does not seem to fix the situation. I also cannot get numpy to crash on its own. All my software works when plotting is disabled. Has anyone else experienced this or similar problems during an upgrade? Joe -- SOLARIS 10 is the OS for Data Centers - provides features such as DTrace, Predictive Self Healing and Award Winning ZFS. Get Solaris 10 NOW http://p.sf.net/sfu/solaris-dev2dev ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- Sincerely, Joe -- Download Intel#174; Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] mplot3d stays?
On Mon, Feb 22, 2010 at 10:01 AM, Ben Axelrod baxel...@coroware.com wrote: John, your assesment of the problem is correct. And I believe your suggested solution is also correct. Currently, each call to a mplot3d plot method is treated independantly. They get converted into custom PolyCollections which each do the Z-order sorting. There is still an issue here however. Even if we implement the aformentioned solution, we are still only approximating a 3d library. And the result will still not be as nice as matlab. I believe that because we treat the surface as a series of 2D polygons, the intersection between two surfaces will be at the polygon edges. See the attached image for an example of what the intersection between a sphere and plane might look like. True enough, but as your example shows it would still be a substantial improvement over what we have now, and by getting all the faces in the scene into a single data structure, we leave open the possibility of doing something more sophisticated down the road (like chopping a problematic face into multiple faces, some in front, some behind, an intersecting object). JDH -- Download Intel#174; Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Clipping
On Mon, Feb 22, 2010 at 10:11 AM, Michael Droettboom md...@stsci.edu wrote: The coordinates for Circle (and all patches) are in data coordinates. So the (300, 300) is relative to the values in the data itself. When adding a patch directly to a plot, however, the limits may not automatically update, so you may need to call axes.set_xlim or axes.set_ylim to adjust them to make the circle visible. In this example, though, he is not adding the Circle to the Axes via add_patch (so the transData transform is not set). Rather, he is using it to set the clip path http://matplotlib.sourceforge.net/examples/api/clippath_demo.html So I think Ryan's answer is correct. But David, if you want the clippath to be in data coordinates, you can set the transform yourself patch = patches.Circle((300,300), radius=100, transform=ax.transData) See the transformations tutorial for more about the coordinate systems and transformations http://matplotlib.sourceforge.net/users/transforms_tutorial.html JDH -- Download Intel#174; Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] missing module docs
I noticed that there are many modules in the current code base that are not listed at: http://matplotlib.sourceforge.net/modindex.html. I understand that a few are new files and that the documentation for these will be generated during the next release. But I know that most of these were in the last release so should have had their documentation generated. Am I missing something? Can the documentation for these modules be found somewhere else? bezier blocking_input contour docstring finance hatch image mlab mpl offsetbox patheffects pylab pyparsing quiver rcsetup table texmanager textpath tight_bbox units widgets windowing Thanks, -Ben Ben Axelrod Robotics Engineer (800) 641-2676 x737 [cid:281553619@22022010-0FB8] www.coroware.comhttp://www.coroware.com/ www.corobot.nethttp://www.corobot.net/ inline: image002.gif-- Download Intel#174; Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] missing module docs
On Mon, Feb 22, 2010 at 1:44 PM, Ben Axelrod baxel...@coroware.com wrote: I noticed that there are many modules in the current code base that are not listed at: http://matplotlib.sourceforge.net/modindex.html. I understand that a few are new files and that the documentation for these will be generated during the next release. But I know that most of these were in the last release so should have had their documentation generated. Am I missing something? Can the documentation for these modules be found somewhere else? You're not missing anything in terms of the html/pdf docs. When we converted our documentation build system to sphinx/rest, we had to convert our docstrings to rest as well. We made good headway for a while but the progress has stalled. To add a module to the documentation system, you need to * make sure the docstrings are ReST compliant * add a stub in doc/api (eg see figure_api.rst * add your new rst file to doc/api/index.rst We'd like to see all of the user facing modules converted, so contributions are welcome. See also http://matplotlib.sourceforge.net/faq/howto_faq.html?highlight=contributing#contribute-to-matplotlib-documentation http://matplotlib.sourceforge.net/devel/documenting_mpl.html http://matplotlib.sourceforge.net/sampledoc/ In the meantime, you can always use pydoc or help from the interactive shell, eg:: pydoc matplotlib.patheffects pydoc also has flags for generating html, etc. or from the shell (ipython here):: In [3]: import matplotlib.patheffects In [4]: help matplotlib.patheffects -- help(matplotlib.patheffects) JDH -- Download Intel#174; Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] hexbin log bins and colorbar
On Mon, Feb 22, 2010 at 3:42 PM, Jan Strube curious...@gmail.com wrote: Hi John, the attachment may not make it to the list. However, please run the modified test.py that I have attached. It requires the attached input file. Then change it to read the original input file. In my case: The broken case: OK, at least now we are running the sample example :-) The problem is that the LogFormatter has a default which is decadeOnly=True and in the first case which worked three of the tick locations coincidentally came down on decades (0, 1, 2 - 1, 10, 100). In the case you were working with, only one of the ticks mapped to the decade. So for this case we want a locator that returns integers 0,1,2... that will then get mapped via Eric's custom formatter to the 10^i formats. Unfortunately, there is no easy way to set the locator for the colorbar. An easy workaround *for this case* is to simply set the tick locations cb = plt.colorbar(format=LogFormatterHB(), ticks=[0,1,2]) but in general you may not know the decade span that you need. It does all feel a bit kludgy. The problem as you noted in one of your earlier posts is that the data is log scaled before being passed into the PolyCollection and the fact that it is log scaled is then lost to the colorbar. It seems everything would fit together more naturally if we passed in raw scalar data to the PolyCollection and set the norm to be colors.LogNorm, and then also set norm=colors.LogNorm on the colorbar I tried: polycol = plt.hexbin(data['jetMomentum'][cut] / 1000, data['deltaR'][cut],gridsize=50, norm=colors.LogNorm()) cb = plt.colorbar(norm=colors.LogNorm()) but this appears to be broken: msie...@pinchiepie:Downloads python test.py Traceback (most recent call last): File test.py, line 29, in module cb = plt.colorbar() File /home/msierig/dev/lib/python2.6/site-packages/matplotlib/pyplot.py, line 1356, in colorbar ret = gcf().colorbar(mappable, cax = cax, ax=ax, **kw) File /home/msierig/dev/lib/python2.6/site-packages/matplotlib/figure.py, line 1103, in colorbar cb = cbar.Colorbar(cax, mappable, **kw) File /home/msierig/dev/lib/python2.6/site-packages/matplotlib/colorbar.py, line 690, in __init__ ColorbarBase.__init__(self, ax, **kw) File /home/msierig/dev/lib/python2.6/site-packages/matplotlib/colorbar.py, line 242, in __init__ self.draw_all() File /home/msierig/dev/lib/python2.6/site-packages/matplotlib/colorbar.py, line 260, in draw_all self._config_axes(X, Y) File /home/msierig/dev/lib/python2.6/site-packages/matplotlib/colorbar.py, line 332, in _config_axes self.update_ticks() File /home/msierig/dev/lib/python2.6/site-packages/matplotlib/colorbar.py, line 271, in update_ticks ticks, ticklabels, offset_string = self._ticker() File /home/msierig/dev/lib/python2.6/site-packages/matplotlib/colorbar.py, line 458, in _ticker b = np.array(locator()) File /home/msierig/dev/lib/python2.6/site-packages/matplotlib/ticker.py, line 1173, in __call__ vmin = self.axis.get_minpos() -- Download Intel#174; Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] hexbin log bins and colorbar
On Mon, Feb 22, 2010 at 4:33 PM, John Hunter jdh2...@gmail.com wrote: polycol = plt.hexbin(data['jetMomentum'][cut] / 1000, data['deltaR'][cut],gridsize=50, norm=colors.LogNorm()) cb = plt.colorbar(norm=colors.LogNorm()) but this appears to be broken: I committed some changes to support this -- the following now works: polycol = plt.hexbin(data['jetMomentum'][cut] / 1000, data['deltaR'][cut],gridsize=50, norm=colors.LogNorm()) cb = plt.colorbar(norm=polycol.norm) Eric - I was surprised the colorbar does not use the mappable norm by default (if passed norm=None). Instead it uses :: norm = colors.Normalize() is this a feature? JDH -- Download Intel#174; Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] hexbin log bins and colorbar
John Hunter wrote: On Mon, Feb 22, 2010 at 4:33 PM, John Hunter jdh2...@gmail.com wrote: polycol = plt.hexbin(data['jetMomentum'][cut] / 1000, data['deltaR'][cut],gridsize=50, norm=colors.LogNorm()) cb = plt.colorbar(norm=colors.LogNorm()) but this appears to be broken: I committed some changes to support this -- the following now works: polycol = plt.hexbin(data['jetMomentum'][cut] / 1000, data['deltaR'][cut],gridsize=50, norm=colors.LogNorm()) cb = plt.colorbar(norm=polycol.norm) Eric - I was surprised the colorbar does not use the mappable norm by default (if passed norm=None). Instead it uses :: norm = colors.Normalize() is this a feature? Yes. You are looking at ColorbarBase, which does not have an associated mappable. The derived Colorbar class does grab the cmap and norm from the mappable used in the initialization. Is this somehow not working? Did you really need to specify the norm explicitly? Eric JDH -- Download Intel#174; Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] How to control display precision and style (e.g., %f or %e) of axis tick labels?
I've searched and searched the online docs...please help. DG -- Download Intel#174; Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] How to control display precision and style (e.g., %f or %e) of axis tick labels?
Hi David,
I found this one::
xticks( arange(5), ('Tom', 'Dick', 'Harry', 'Sally', 'Sue') )
On the page
http://matplotlib.sourceforge.net/api/pyplot_api.html#matplotlib.pyplot.xticks
If I had that problem I would try to do something like that:
xvalues = linspace(0,100,1000)
xticks(xvalues, [%.2f % val for val in xvalues])
# or, with a lambda expression, but in #python they say
# a list comprehension is better (faster)
xticks(xvalues, map(lambda i : %.2f % i, xvalues))
The side effect is, of course, that the tick is not exactly at the position he
indicates. Maybe you better use arange() to get the right values for your
ticks, just make sure that they cover the interval your xvalues are in.
If you find a better solution, please let me know.
Best regards,
Philipp
--
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Re: [Matplotlib-users] missing module docs
John Hunter wrote: On Mon, Feb 22, 2010 at 1:44 PM, Ben Axelrod baxel...@coroware.com mailto:baxel...@coroware.com wrote: I noticed that there are many modules in the current code base that are not listed at: http://matplotlib.sourceforge.net/modindex.html. I understand that a few are new files and that the documentation for these will be generated during the next release. But I know that most of these were in the last release so should have had their documentation generated. Am I missing something? Can the documentation for these modules be found somewhere else? You're not missing anything in terms of the html/pdf docs. When we converted our documentation build system to sphinx/rest, we had to convert our docstrings to rest as well. We made good headway for a while but the progress has stalled. To add a module to the documentation system, you need to Also, it's worth nothing that the docs from svn head are automatically compiled and uploaded from svn on each commit: HTML: http://matplotlib.sourceforge.net/trunk-docs/index.html PDF: http://matplotlib.sourceforge.net/trunk-docs/Matplotlib.pdf -Andrew -- Download Intel#174; Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
