Mailman 3 January 2016 - Matplotlib-devel

CTFontLogSuboptimalRequest
by My Phan Jan. 29, 2016

Jan. 29, 2016

Hello, I have recently re-installed Matplotlib v1.5.1 because of Segmentation Fault 11. This seg fault was fixed with the new installation, however there is a bug in Font used as shown below. Can you please advise how I should fix this font issue? Many thanks and Best wishes, My. /Users/mp21/Library/Enthought/Canopy_64bit/User/lib/python2.7/site-packages/matplotlib/font_manager.py:273: UserWarning: Matplotlib is building the font cache using fc-list. This may take a moment. warnings.warn('Matplotlib is building the font cache using fc-list. This may take a moment.') 2016-01-29 10:37:46.808 Python[9897:d0f] CoreText performance note: Client called CTFontCreateWithName() using name "Lucida Grande" and got font with PostScript name "LucidaGrande". For best performance, only use PostScript names when calling this API. 2016-01-29 10:37:46.808 Python[9897:d0f] CoreText performance note: Set a breakpoint on CTFontLogSuboptimalRequest to debug. -- The Wellcome Trust Sanger Institute is operated by Genome Research Limited, a charity registered in England with number 1021457 and a company registered in England with number 2742969, whose registered office is 215 Euston Road, London, NW1 2BE.

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Install of matplotlib into Python 3.4 virtual env
by pstarrett Jan. 28, 2016

Jan. 28, 2016

I have tried numerous ways to install matplotlib into a Python 3.4 virtual environment with no luck. I have tried many variations of pip, easy_install and apt-get (which installs globally automatically so is not useful). Thank you! -- View this message in context: http://matplotlib.1069221.n5.nabble.com/Install-of-matplotlib-into-Python-3… Sent from the matplotlib - devel mailing list archive at Nabble.com.

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Matplotlib meeting minutes 2016-01-25
by Michael Droettboom Jan. 25, 2016

Jan. 25, 2016

In attendance: Michael Droettboom, Thomas Caswell, Jens Nielsen and Erik Firing - Jan Schulz (working on AppVeyor integration and all things Windowsy and annoying) have been offered some help by the Anaconda team at Continuum to make building Windows conda packages easier and using conda in the AppVeyor environment easier. Windows integration testing is a major pain point, so this is all very welcome. - We are all in favor of creating a matplotlib-nogui package for Anaconda. The existing matplotlib package would become a metapackage that would bring in Qt and Tkinter. It's an open question as to how far the Anaconda distribution wants to go with using matplotlib-nogui instead (Jupyter could reasonably be changed to depend only on matplotlib-nogui, for example). - The style omnibus PR is essentially feature complete -- Mike will investigate and fix test failures - The overriding of defaults by `%matplotlib inline` mode in Jupyter notebook remains a major source of user bugs. Not sure how to resolve, though. -- Michael Droettboom Continuum Analytics

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Possible bug in matplotlib versions 1.4 and higher with basemap arcgisimage imagery
by Mike Tercek Jan. 25, 2016

Jan. 25, 2016

When I make a map with the basemap and try to insert a background image from acrgis servers, the following code works ok if I have maplotlib version 1.3.1 installed: m = Basemap(llcrnrlon=ll_lon,llcrnrlat=ll_lat,urcrnrlon=ur_lon,urcrnrlat=ur_lat,epsg=3857,lat_0=latz,lon_0=lonz, fix_aspect = False)m.arcgisimage(service='ESRI_Imagery_World_2D', xpixels = 2000, verbose= False, dpi = 80) However, if I have matplotlib version 1.4.3 installed I get the following error: Python 3.4.3 (default, Oct 14 2015, 20:28:29) [GCC 4.8.4] on linuxType "help", "copyright", "credits" or "license" for more information.>>> runfile('/media/mt/7670100C700FD1B3/vegviz/contain/xv.py', wdir=r'/media/mt/7670100C700FD1B3/vegviz/contain')Content-Type: text/html Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/usr/local/lib/python3.4/dist-packages/spyderlib/widgets/externalshell/sitecustomize.py", line 680, in runfile execfile(filename, namespace) File "/usr/local/lib/python3.4/dist-packages/spyderlib/widgets/externalshell/sitecustomize.py", line 85, in execfile exec(compile(open(filename, 'rb').read(), filename, 'exec'), namespace) File "/media/mt/7670100C700FD1B3/vegviz/contain/xv.py", line 401, in <module> m,fig = make_base_map(title,frame_bound,park_bound,inset,inset_location,inset_alignment,ll_lon,ll_lat,ur_lon,ur_lat,latz,lonz,True) File "/media/mt/7670100C700FD1B3/vegviz/contain/xv.py", line 110, in make_base_map m.arcgisimage(service='ESRI_Imagery_World_2D', xpixels = 2000, verbose= False, dpi = 80) File "/usr/local/lib/python3.4/dist-packages/mpl_toolkits/basemap/__init__.py", line 4270, in arcgisimage return self.imshow(imread(urllib.request.urlopen(basemap_url)),origin='upper') File "/usr/local/lib/python3.4/dist-packages/matplotlib/image.py", line 1270, in imread return handler(fname)RuntimeError: _image_module::readpng: file not recognized as a PNG file And if I install matplotlib 1.5.1, I get this error: Python 3.4.3 (default, Oct 14 2015, 20:28:29) [GCC 4.8.4] on linuxType "help", "copyright", "credits" or "license" for more information.>>> runfile('/media/mt/7670100C700FD1B3/vegviz/contain/xv.py', wdir=r'/media/mt/7670100C700FD1B3/vegviz/contain')Content-Type: text/html Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/usr/local/lib/python3.4/dist-packages/spyderlib/widgets/externalshell/sitecustomize.py", line 680, in runfile execfile(filename, namespace) File "/usr/local/lib/python3.4/dist-packages/spyderlib/widgets/externalshell/sitecustomize.py", line 85, in execfile exec(compile(open(filename, 'rb').read(), filename, 'exec'), namespace) File "/media/mt/7670100C700FD1B3/vegviz/contain/xv.py", line 401, in <module> m,fig = make_base_map(title,frame_bound,park_bound,inset,inset_location,inset_alignment,ll_lon,ll_lat,ur_lon,ur_lat,latz,lonz,True) File "/media/mt/7670100C700FD1B3/vegviz/contain/xv.py", line 110, in make_base_map m.arcgisimage(service='ESRI_Imagery_World_2D', xpixels = 2000, verbose= False, dpi = 80) File "/usr/local/lib/python3.4/dist-packages/mpl_toolkits/basemap/__init__.py", line 4270, in arcgisimage return self.imshow(imread(urllib.request.urlopen(basemap_url)),origin='upper') File "/usr/local/lib/python3.4/dist-packages/matplotlib/image.py", line 1326, in imread return handler(fname)SystemError: error return without exception set

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PyData Chicago Sprint Volunteers
by Safia Abdalla Jan. 18, 2016

Jan. 18, 2016

Hello, I'm a developer on Project Jupyter and the organizer of the PyData Chicago. I'm currently working on organizing monthly open-source sprints for the Chicago chapter of PyData. The sprints will occur on the third Tuesday evening of each month. Each sprint will consist of 5 divisions, each focused on a NumFOCUS-sponsored project. Each of the divisions will be mentored by an individual with particular expertise in that project. Mentors prepare a particular set of issues to guide the team through, provide guidance on open source contribution and TDD, and tell funny jokes to keep people from going insane at the hands of bad bugs. I was wondering if there were any matplotlib contributors in Chicago on this list would be interested in being a mentor for the matplotib division. The commitment will involve attending the sprints every other month and selecting issues prior to each sprint that you will guide division participants through. If anyone is interested, feel free to send me an email at safia -at- safia -dot- rocks. Feel free to send emails with any questions as well. Looking forward to hearing from you folks! Thanks, Safia @captainsafia on Twitter and GitHub

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Where can I get "Use viridis" Stickers ?
by Matthias Bussonnier Jan. 15, 2016

Jan. 15, 2016

Hello matplotlib devel, First thanks for all the work on Matplotlib 1.5, and future 2.0 this is (and will be) awesome releases. As all of you are (hopefully) aware, the various colormaps that have been designed and shipped in matplotlib 1.5 are awesome, and are now available for many languages and graphical frameworks. Unfortunately, it is still common to come across both numerical and printed versions of posters in labs and at conferences that uses our dear hated jet colormap. I wonder if it would be possible to design/acquire a number of “use viridis” and “jet kills” stickers, that I could stick here and there for inapropriate use of rainbow-like colormaps, as well as on my laptop. Please find attached an idea of what it could look like (though I’m not good at design) I would be happy to get the same for Inferno, magma & plasma of course, and I think that a distribution of these stickers at the same time as Matplotlib 2.0 would be a nice communication stunt. Thanks, -- M

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matplotlib v1.5.1 released
by Thomas Caswell Jan. 11, 2016

Jan. 11, 2016

Hey folks, We are happy to announce the release of matplotlib v1.5.1. Source + wheels are available on pypi and source forge. pip install --upgrade matplotlib should get you 1.5.1. Tom

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mpl 1.5.1 tagged + currently active branches
by Thomas Caswell Jan. 10, 2016

Jan. 10, 2016

Hey folks, I have tagged 1.5.1, but will hold off a wider announcement + rebuilding the webpage until all of the wheels are built. The mac wheels are built by travis and should be done already but we did not back-port the appveyor setup to the 1.5.x branch so we are still relying on Christoph Gohlke. I am not sure the status of conda-forge for auto-built conda packages. For branches, our currently active branches are: - 1.5.1-doc: documentation (rst files and examples) only - 1.5.x: critical bugs. This is a hedge against needing to do a 1.5.2 - 2.x: style changes + any new features required to make the style changes work - master: almost anything can go in. We are holding off on traitlets + the GUI refactor just a bit longer in case we run into any other major problems on 2.x (to avoid a potentially really messy merge). A big thanks to everyone who reported bugs or provided fixes for this release! Tom

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Any plans to change the defaults in matplotlibrc
by Isaac Gerg Jan. 7, 2016

Jan. 7, 2016

Hi, I was wondering if there are any plans to change some of the defaults in matplotlibrc. I have created a matplotlibrc file that I find very suitable and wondering if its worth sharing here. Isaac

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ANN mpl v1.5.1rc1
by Thomas Caswell Jan. 7, 2016

Jan. 7, 2016

Hey Folks, We are happy to announce the first RC for 1.5.1, the first bug-fix release is the 1.5.x series, please kick the tires. Given the scale of the changes from 1.5.0 we are planning a short RC cycle with a 1.5.1 final tagged on 2016-01-06. To see the differences between 1.5.0 and 1.5.1rc1 <https://github.com/matplotlib/matplotlib/compare/v1.5.0...v1.5.1rc1> . We had not planned to do a 1.5.1 release, but the style changes for v2.0 revealed a number of critical issues which needed to be addressed. The time line for 2.0 is contingent on how well that work goes and if we discover any other major work that needs to be done to support the default style changes. The goal is v2.0.0rc1 sometime in the Q1 of 2016 with a long rc cycle to have as many users as possible try the new defaults prior to tagging v2. Thank you to everyone who reported bugs and fixes against v1.5.0. Tom

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