Matplotlib-users

Download

matplotlib-users@python.org

September 2022

2 participants
2 discussions

[ANN] Matplotlib 3.6.0
by Elliott Sales de Andrade Sept. 17, 2022

Sept. 17, 2022

Hi all, We are pleased to announce the release of Matplotlib 3.6.0. Pre-built wheels are available for most major platforms, and can be installed using `pip install matplotlib==3.6.0`. Wheels are now available for PyPy 3.8/3.9 and Python 3.11. Other packages mayalso be available already; please check with your preferred source. We thank the 174 authors for the 894 pull requests that comprise the 3.6.0 release. Highlights of this release include: * Figure and Axes creation / management o |subplots|, |subplot_mosaic| accept /height_ratios/ and /width_ratios/ arguments o Constrained layout is no longer considered experimental o New |layout_engine| module o Compressed layout added for fixed-aspect ratio Axes o Layout engines may now be removed o |Axes.inset_axes| flexibility o WebP is now a supported output format o Garbage collection is no longer run on figure close * Plotting methods o Striped lines (experimental) o Custom cap widths in box and whisker plots in |bxp| and |boxplot| o Easier labelling of bars in bar plot o New style format string for colorbar ticks o Linestyles for negative contours may be set individually o Improved quad contour calculations via ContourPy o |errorbar| supports /markerfacecoloralt/ o |streamplot| can disable streamline breaks o New axis scale |asinh| (experimental) o |stairs(..., fill=True)| hides patch edge by setting linewidth o Fix the dash offset of the |Patch| class o |Rectangle| patch rotation point * Colors and colormaps o Color sequence registry o Colormap method for creating a different lookup table size o Setting norms with strings * Titles, ticks, and labels o |plt.xticks| and |plt.yticks| support /minor/ keyword argument * Legends o Legend can control alignment of title and handles o /ncol/ keyword argument to |legend| renamed to /ncols/ * Markers o |marker| can now be set to the string "none" o Customization of |MarkerStyle| join and cap style * Fonts and Text o Font fallback o List of available font names o |math_to_image| now has a /color/ keyword argument o Active URL area rotates with link text * rcParams improvements o Allow setting figure label size and weight globally and separately from title o Mathtext parsing can be disabled globally o Double-quoted strings in matplotlibrc * 3D Axes improvements o Standardized views for primary plane viewing angles o Custom focal length for 3D camera o 3D plots gained a 3rd "roll" viewing angle o Equal aspect ratio for 3D plots * Interactive tool improvements o Rotation, aspect ratio correction and add/remove state o |MultiCursor| now supports Axes split over multiple figures o |PolygonSelector| bounding boxes o Setting |PolygonSelector| vertices o |SpanSelector| widget can now be snapped to specified values o More toolbar icons are styled for dark themes * Platform-specific changes o Wx backend uses standard toolbar o Improvements to macosx backend + Modifier keys handled more consistently + |savefig.directory| rcParam support + |figure.raise_window| rcParam support + Full-screen toggle support + Improved animation and blitting support o macOS application icon applied on Qt backend o New minimum macOS version o Windows on ARM support For further details, please see the What's new in Matplotlib 3.6.0 page: https://matplotlib.org/stable/users/prev_whats_new/whats_new_3.6.0.html and the milestone on GitHub: https://github.com/matplotlib/matplotlib/milestone/65?closed=1 For packagers, this release contains some changes to dependencies: * Python 3.8 is now required. * NumPy 1.19 is now required. * The ContourPy package is now required for contouring. This release is signed by my GPG key. The fingerprint is: 23CA B59E 3332 F94D 26BE F037 8D86 E7FA E5EB 0C10 and it is also used to sign this message.

1 0

Intermittent lock-ups when using QtAgg backend
by Slavin, Jonathan Sept. 16, 2022

Sept. 16, 2022

Hi, For some time now I have run into intermittent lock-ups when using the QtAgg backend. By this I mean, when at the command line I do "ipython --pylab" I get what appears to be a normal startup: Python 3.8.13 | packaged by conda-forge | (default, Mar 25 2022, 06:04:10) Type 'copyright', 'credits' or 'license' for more information IPython 8.4.0 -- An enhanced Interactive Python. Type '?' for help. Using matplotlib backend: QtAgg In [1]: But then the terminal is completely unresponsive. Typing produces no output and even ctrl-c or ctrl-z do nothing. To kill the session requires me to kill the process in a different terminal window. This does not correlate with anything I've been able to identify. When this happens I switch my backend to TkAgg which then works (but has less functionality than QtAgg). Since I prefer the QtAgg backend I generally try it again after some period, and often it then works normally. So this is mysterious. Can anyone recommend how to diagnose the cause of this behavior? Thanks, Jon -- Jonathan D. Slavin (he/him) Astrophysicist - High Energy Astrophysics Division Center for Astrophysics | Harvard & Smithsonian Office: (617) 496-7981 | Cell: (781) 363-0035 60 Garden Street | MS 04 | Cambridge, MA 02138

1 0