API Changes in 1.4.x#
A major refactoring of the axes module was made. The axes module has been split into smaller modules:
_basemodule, which contains a new private
_AxesBaseclass. This class contains all methods except plotting and labelling methods.
_subplotmodule, with all the classes concerning subplotting.
There are a couple of things that do not exists in the
module's namespace anymore. If you use them, you need to import them from their
from numpy import ma
from matplotlib import cbook
from matplotlib import docstring
from matplotlib.cbook import is_sequence_of_strings
from matplotlib.cbook import is_string_like
from matplotlib.cbook import iterable
from matplotlib import artist as martist
from matplotlib import collections as mcoll
from matplotlib import colors as mcolors
from matplotlib import contour as mcontour
from matplotlib import patches as mpatches
from matplotlib import path as mpath
from matplotlib import quiver as mquiver
from matplotlib import stack as mstack
from matplotlib import stream as mstream
from matplotlib import table as mtable
As part of the refactoring to enable Qt5 support, the module
matplotlib.backends.qt4_compatwas renamed to
qt4_compatis deprecated in 1.4 and will be removed in 1.5.
errorbar()method has been changed such that the upper and lower limits (lolims, uplims, xlolims, xuplims) now point in the correct direction.
The fmt kwarg for
errorbar()now supports the string 'none' to suppress drawing of a line and markers; use of the None object for this is deprecated. The default fmt value is changed to the empty string (''), so the line and markers are governed by the
A bug has been fixed in the path effects rendering of fonts, which now means that the font size is consistent with non-path effect fonts. See matplotlib/matplotlib#2889 for more detail.
The Sphinx extensions
ipython_console_highlightinghave been moved to the IPython project itself. While they remain in Matplotlib for this release, they have been deprecated. Update your extensions in
conf.pyto point to
matplotlib.finance, almost all functions have been deprecated and replaced with a pair of functions name
*_ohlc. The former is the 'open-close-high-low' order of quotes used previously in this module, and the latter is the 'open-high-low-close' order that is standard in finance.
For consistency the
matplotlib.patheffects.SimplePatchShadowhas been deprecated in favour of the
alphakeyword. Similarly, the keyword
offset_xyis now named
matplotlib.patheffects._Basehas been renamed to
matplotlib.patheffect.ProxyRendererhas been renamed to
matplotlib.patheffects.PathEffectRendererand is now a full RendererBase subclass.
The artist used to draw the outline of a
Figure.colorbarhas been changed from a
colorbar.ColorbarBase.outlineis now a
The legend handler interface has changed from a callable, to any object which implements the
legend_artistsmethod (a deprecation phase will see this interface be maintained for v1.4). See Legend guide for further details. Further legend changes include:
matplotlib.axes.Axes._get_legend_handlesnow returns a generator of handles, rather than a list.
legend()function's loc positional argument has been deprecated. Use the loc keyword argument instead.
False) has been added to control default transparency when saving figures.
Slightly refactored the
Annotationfamily. The text location in
Annotationis now entirely handled by the underlying
.set_positionworks as expected. The attributes xytext and textcoords have been deprecated in favor of xyann and anncoords so that
AnnotationBboxcan share a common sensibly named api for getting/setting the location of the text or box.
xyann -> set the location of the annotation
xy -> set where the arrow points to
anncoords -> set the units of the annotation location
xycoords -> set the units of the point location
Annotationonly set location of annotation
matplotlib.pyplot.coherenow raise ValueError where they previously raised AssertionError.
matplotlib.pyplot.cohere, in cases where a shape (n, 1) array is returned, this is now converted to a (n, ) array. Previously, (n, m) arrays were averaged to an (n, ) array, but (n, 1) arrays were returned unchanged. This change makes the dimensions consistent in both cases.
matplotlib.testing.image_utiland the only function within,
matplotlib.testing.image_util.autocontrast. These will be removed completely in v1.5.0.
plot_date()has been changed from
o, so color cycling can happen by default.
Removed the class
NavigationToolbar2QTAggwhich will be removed in 1.5.
Removed formerly public (non-prefixed) attributes
FigureCanvasQTAgg; they were always an implementation detail of the (preserved)
The function signatures of
matplotlib.tight_bbox.process_figure_for_rasterizinghave been changed. A new fixed_dpi parameter allows for overriding the
figure.dpisetting instead of trying to deduce the intended behaviour from the file format.
Added support for horizontal/vertical axes padding to
mpl_toolkits.axes_grid1.axes_grid.ImageGrid--- argument axes_pad can now be tuple-like if separate axis padding is required. The original behavior is preserved.
Added clockwise parameter to control sectors direction in
matplotlib.lines.Line2Dthe markevery functionality has been extended. Previously an integer start-index and stride-length could be specified using either a two-element-list or a two-element-tuple. Now this can only be done using a two-element-tuple. If a two-element-list is used then it will be treated as NumPy fancy indexing and only the two markers corresponding to the given indexes will be shown.
Removed prop keyword argument from
mpl_toolkits.axes_grid1.anchored_artists.AnchoredSizeBarcall. It was passed through to the base-class
__init__and is only used for setting padding. Now fontproperties (which is what is really used to set the font properties of
AnchoredSizeBar) is passed through in place of prop. If fontproperties is not passed in, but prop is, then prop is used in place of fontproperties. If both are passed in, prop is silently ignored.
The use of the index 0 in
pyplot.subplotand related commands is deprecated. Due to a lack of validation, calling
plt.subplots(2, 2, 0)does not raise an exception, but puts an axes in the _last_ position. This is due to the indexing in subplot being 1-based (to mirror MATLAB) so before indexing into the
GridSpecobject used to determine where the axes should go, 1 is subtracted off. Passing in 0 results in passing -1 to
GridSpecwhich results in getting the last position back. Even though this behavior is clearly wrong and not intended, we are going through a deprecation cycle in an abundance of caution that any users are exploiting this 'feature'. The use of 0 as an index will raise a warning in 1.4 and an exception in 1.5.
Clipping is now off by default on offset boxes.
Matplotlib now uses a less-aggressive call to
gc.collect(1)when closing figures to avoid major delays with large numbers of user objects in memory.
The default clip value of all pie artists now defaults to
mlab.levypdf. The code raised a NumPy error (and has for a long time) and was not the standard form of the Levy distribution.
scipy.stats.levyshould be used instead