Changes in 1.5.0¶
Code Changes¶
Reversed matplotlib.cbook.ls_mapper, added ls_mapper_r¶
Formerly, matplotlib.cbook.ls_mapper was a dictionary with
the long-form line-style names ("solid") as keys and the short
forms ("-") as values. This long-to-short mapping is now done
by ls_mapper_r, and the short-to-long mapping is done by the
ls_mapper.
Prevent moving artists between Axes, Property-ify Artist.axes, deprecate Artist.{get,set}_axes¶
This was done to prevent an Artist that is already associated with an Axes from being moved/added to a different Axes. This was never supported as it causes havoc with the transform stack. The apparent support for this (as it did not raise an exception) was the source of multiple bug reports and questions on SO.
For almost all use-cases, the assignment of the axes to an artist should be
taken care of by the axes as part of the Axes.add_* method, hence the
deprecation of {get,set}_axes.
Removing the set_axes method will also remove the 'axes' line from
the ACCEPTS kwarg tables (assuming that the removal date gets here
before that gets overhauled).
Tightened input validation on 'pivot' kwarg to quiver¶
Tightened validation so that only {'tip', 'tail', 'mid', and 'middle'} (but any
capitalization) are valid values for the pivot keyword argument in the
Quiver class (and hence axes.Axes.quiver and pyplot.quiver which both
fully delegate to Quiver). Previously any input matching 'mid.*' would be
interpreted as 'middle', 'tip.*' as 'tip' and any string not matching one of
those patterns as 'tail'.
The value of Quiver.pivot is normalized to be in the set {'tip', 'tail',
'middle'} in Quiver.
Reordered Axes.get_children¶
The artist order returned by axes.Axes.get_children did not
match the one used by axes.Axes.draw. They now use the same
order, as axes.Axes.draw now calls axes.Axes.get_children.
Changed behaviour of contour plots¶
The default behaviour of contour() and
contourf() when using a masked array is now determined
by the new keyword argument corner_mask, or if this is not specified then
the new rcParams["contour.corner_mask"] (default: True) instead. The new default behaviour is
equivalent to using corner_mask=True; the previous behaviour can be obtained
using corner_mask=False or by changing the rcParam. The example
http://matplotlib.org/examples/pylab_examples/contour_corner_mask.html
demonstrates the difference. Use of the old contouring algorithm, which is
obtained with corner_mask='legacy', is now deprecated.
Contour labels may now appear in different places than in earlier versions of Matplotlib.
In addition, the keyword argument nchunk now applies to
contour() as well as
contourf(), and it subdivides the domain into
subdomains of exactly nchunk by nchunk quads, whereas previously it was
only roughly nchunk by nchunk quads.
The C/C++ object that performs contour calculations used to be stored in the
public attribute QuadContourSet.Cntr, but is now stored in a private
attribute and should not be accessed by end users.
Added set_params function to all Locator types¶
This was a bug fix targeted at making the api for Locators more consistent.
In the old behavior, only locators of type MaxNLocator have set_params() defined, causing its use on any other Locator to raise an AttributeError ( aside: set_params(args) is a function that sets the parameters of a Locator instance to be as specified within args). The fix involves moving set_params() to the Locator class such that all subtypes will have this function defined.
Since each of the Locator subtypes have their own modifiable parameters, a universal set_params() in Locator isn't ideal. Instead, a default no-operation function that raises a warning is implemented in Locator. Subtypes extending Locator will then override with their own implementations. Subtypes that do not have a need for set_params() will fall back onto their parent's implementation, which raises a warning as intended.
In the new behavior, Locator instances will not raise an AttributeError when set_params() is called. For Locators that do not implement set_params(), the default implementation in Locator is used.
Disallow None as x or y value in ax.plot¶
Do not allow None as a valid input for the x or y args in
axes.Axes.plot. This may break some user code, but this was never
officially supported (ex documented) and allowing None objects through can
lead to confusing exceptions downstream.
To create an empty line use
ln1, = ax.plot([], [], ...)
ln2, = ax.plot([], ...)
In either case to update the data in the Line2D object you must update
both the x and y data.
Removed args and kwargs from MicrosecondLocator.__call__¶
The call signature of __call__()
has changed from __call__(self, *args, **kwargs) to __call__(self).
This is consistent with the superclass Locator
and also all the other Locators derived from this superclass.
No ValueError for the MicrosecondLocator and YearLocator¶
The MicrosecondLocator and
YearLocator objects when called will return
an empty list if the axes have no data or the view has no interval.
Previously, they raised a ValueError. This is consistent with all
the Date Locators.
'OffsetBox.DrawingArea' respects the 'clip' keyword argument¶
The call signature was OffsetBox.DrawingArea(..., clip=True) but nothing
was done with the clip argument. The object did not do any clipping
regardless of that parameter. Now the object can and does clip the
child Artists if they are set to be clipped.
You can turn off the clipping on a per-child basis using
child.set_clip_on(False).
Add salt to clipPath id¶
Add salt to the hash used to determine the id of the clipPath
nodes. This is to avoid conflicts when two svg documents with the same
clip path are included in the same document (see
https://github.com/ipython/ipython/issues/8133 and
https://github.com/matplotlib/matplotlib/issues/4349 ), however this
means that the svg output is no longer deterministic if the same
figure is saved twice. It is not expected that this will affect any
users as the current ids are generated from an md5 hash of properties
of the clip path and any user would have a very difficult time
anticipating the value of the id.
Changed snap threshold for circle markers to inf¶
When drawing circle markers above some marker size (previously 6.0) the path used to generate the marker was snapped to pixel centers. However, this ends up distorting the marker away from a circle. By setting the snap threshold to inf snapping is never done on circles.
This change broke several tests, but is an improvement.
Preserve units with Text position¶
Previously the 'get_position' method on Text would strip away unit information even though the units were still present. There was no inherent need to do this, so it has been changed so that unit data (if present) will be preserved. Essentially a call to 'get_position' will return the exact value from a call to 'set_position'.
If you wish to get the old behaviour, then you can use the new method called 'get_unitless_position'.
New API for custom Axes view changes¶
Interactive pan and zoom were previously implemented using a Cartesian-specific
algorithm that was not necessarily applicable to custom Axes. Three new private
methods, matplotlib.axes._base._AxesBase._get_view,
matplotlib.axes._base._AxesBase._set_view, and
matplotlib.axes._base._AxesBase._set_view_from_bbox, allow for custom
Axes classes to override the pan and zoom algorithms. Implementors of
custom Axes who override these methods may provide suitable behaviour for
both pan and zoom as well as the view navigation buttons on the interactive
toolbars.
MathTex visual changes¶
The spacing commands in mathtext have been changed to more closely match vanilla TeX.
Improved spacing in mathtext¶
The extra space that appeared after subscripts and superscripts has been removed.
No annotation coordinates wrap¶
In #2351 for 1.4.0 the behavior of ['axes points', 'axes pixel', 'figure points', 'figure pixel'] as coordinates was change to no longer wrap for negative values. In 1.4.3 this change was reverted for 'axes points' and 'axes pixel' and in addition caused 'axes fraction' to wrap. For 1.5 the behavior has been reverted to as it was in 1.4.0-1.4.2, no wrapping for any type of coordinate.
Deprecation¶
Deprecated GraphicsContextBase.set_graylevel¶
The GraphicsContextBase.set_graylevel function has been deprecated in 1.5
and will be removed in 1.6. It has been unused. The
GraphicsContextBase.set_foreground could be used instead.
deprecated idle_event¶
The idle_event was broken or missing in most backends and causes spurious
warnings in some cases, and its use in creating animations is now obsolete due
to the animations module. Therefore code involving it has been removed from all
but the wx backend (where it partially works), and its use is deprecated. The
animation module may be used instead to create animations.
color_cycle deprecated¶
In light of the new property cycling feature,
the Axes method set_color_cycle is now deprecated.
Calling this method will replace the current property cycle with
one that cycles just the given colors.
Similarly, the rc parameter axes.color_cycle is also deprecated in
lieu of the new rcParams["axes.prop_cycle"] (default: cycler('color', ['#1f77b4', '#ff7f0e', '#2ca02c', '#d62728', '#9467bd', '#8c564b', '#e377c2', '#7f7f7f', '#bcbd22', '#17becf'])) parameter. Having both parameters in
the same rc file is not recommended as the result cannot be
predicted. For compatibility, setting axes.color_cycle will
replace the cycler in rcParams["axes.prop_cycle"] (default: cycler('color', ['#1f77b4', '#ff7f0e', '#2ca02c', '#d62728', '#9467bd', '#8c564b', '#e377c2', '#7f7f7f', '#bcbd22', '#17becf'])) with a color cycle.
Accessing axes.color_cycle will return just the color portion
of the property cycle, if it exists.
Timeline for removal has not been set.
Bundled jquery¶
The version of jquery bundled with the webagg backend has been upgraded from 1.7.1 to 1.11.3. If you are using the version of jquery bundled with webagg you will need to update your html files as such
- <script src="_static/jquery/js/jquery-1.7.1.min.js"></script>
+ <script src="_static/jquery/js/jquery-1.11.3.min.js"></script>
Code Removed¶
Removed Image from main namespace¶
Image was imported from PIL/pillow to test if PIL is available, but
there is no reason to keep Image in the namespace once the availability
has been determined.
Removed lod from Artist¶
Removed the method set_lod and all references to the attribute _lod as
they are not used anywhere else in the code base. It appears to be a feature
stub that was never built out.
Removed Lena images from sample_data¶
The lena.png and lena.jpg images have been removed from
Matplotlib's sample_data directory. The images are also no longer
available from matplotlib.cbook.get_sample_data. We suggest using
matplotlib.cbook.get_sample_data('grace_hopper.png') or
matplotlib.cbook.get_sample_data('grace_hopper.jpg') instead.
Legend handlers¶
Remove code to allow legend handlers to be callable. They must now
implement a method legend_artist.
Axis¶
Removed method set_scale. This is now handled via a private method which
should not be used directly by users. It is called via Axes.set_{x,y}scale
which takes care of ensuring the related changes are also made to the Axes
object.
finance.py¶
Removed functions with ambiguous argument order from finance.py
Annotation¶
Removed textcoords and xytext proprieties from Annotation objects.
sphinxext.ipython_*.py¶
Both ipython_console_highlighting and ipython_directive have been
moved to IPython.
Change your import from matplotlib.sphinxext.ipython_directive to
IPython.sphinxext.ipython_directive and from
matplotlib.sphinxext.ipython_directive to
IPython.sphinxext.ipython_directive
LineCollection.color¶
Deprecated in 2005, use set_color
remove 'faceted' as a valid value for shading in tri.tripcolor¶
Use edgecolor instead. Added validation on shading to only be valid values.
Remove faceted kwarg from scatter¶
Remove support for the faceted kwarg. This was deprecated in
d48b34288e9651ff95c3b8a071ef5ac5cf50bae7 (2008-04-18!) and replaced by
edgecolor.
Remove set_colorbar method from ScalarMappable¶
Remove set_colorbar method, use colorbar attribute
directly.
patheffects.svg¶
- remove
get_proxy_renderermethod fromAbstarctPathEffectclass- remove
patch_alphaandoffset_xyfromSimplePatchShadow
Remove testing.image_util.py¶
Contained only a no-longer used port of functionality from PIL
Remove mlab.FIFOBuffer¶
Not used internally and not part of core mission of mpl.
Remove mlab.prepca¶
Deprecated in 2009.
mpl.py¶
Remove the module matplotlib.mpl. Deprecated in 1.3 by
PR #1670 and commit 78ce67d161625833cacff23cfe5d74920248c5b2