plotnine

Bug Fixes

• plotnine can be installed under Pyodide 314 again. Pyodide 314 vendors statsmodels 0.14.6 and builds it itself, so the requirement that held statsmodels at 0.14.4 under Pyodide left micropip with no wheel to install and it failed with Can't find a pure Python 3 wheel for 'statsmodels<=0.14.4; sys_platform == "emscripten"'. The requirement now admits 0.14.6 there, and still holds at 0.14.4 for the older Pyodide that vendors that version.

Bug Fixes

• Fixed the text line spacing in theme_gray, theme_matplotlib, theme_seaborn and theme_void so that it renders correctly with matplotlib 3.11. The 3.11 text overhaul changed how the line height is derived from the font, which threw off the previous numeric linespacing values.

Bug Fixes

• Fixed last_plot() so that it returns an independent, pristine snapshot of the plot. Previously the plot was stored as a shallow copy and building it mutated shared nested state (e.g. the theme), leaving last_plot() referencing a half-built plot.

Bug Fixes

• For interactive output, binary image data is now base64 encoded, making the output visible for pyodide blocks in quarto-live pages.

(2026-05-05)

New

• Bundled agent skills

Bug Fixes

• Allow statsmodels==0.14.4 on pyodide, which bundles that version. Other platforms still require statsmodels>=0.14.6 for pandas 3 compatibility.

(2025-01-28)

Enhancements

• Removed warnings about copy-on-write for pandas >= 3.0.0

(2025-12-12)

Bug Fixes

• Fixed random failures for when using plotnine in quarto == 1.8.26. {{< issue 1017 >}}

(2025-09-30)

### New

• Added [](~plotnine.scale_stroke_identity) which was conspicuously missing!

• Added [](~plotnine.composition.Compose.show), making it possible to output/show plot composition objects when they are not the last object in a cell.

### Enhancements

• In a jupyter environment, the output when the plot is the last in a cell is now rendered without side effects. ({{< pr 969 >}})

• When using the knitr engine in a Quarto document, you no longer need to class plot.show() to get output if the plot is the last object in the cell. ({{< issue 970 >}})

### Bug Fixes

• Fixed labels set with the labs call so that they are only ever overwritten by a call to labs or setting the name of a scale. Previously, if a global mapping was added after labs, it over-wrote the previously set labels.

  `python ggplot(mtcars) + labs(x="x title", y="y title") + geom_point() + aes("wt", "mpg") `

  The labels will be "x title" and "y title".

• Fixed bug with plot compositions where if a plot_spacer is the last plot in the composition, one could not change the figure size or dpi of the composition. ({{< issue 960 >}})

(2025-06-15)

### API Changes

• Themeables axis_ticks_pad, axis_ticks_pad_minor, axis_ticks_pad_major, axis_ticks_pad_minor_x, axis_ticks_pad_minor_y, axis_ticks_pad_major_x and axis_ticks_pad_major_y have been deprecated. Use the margin parameter of [](~plotnine.element_text) with axis_text, axis_text_x or axis_text_y to control the spacing between the axis text and the ticks. ({{< issue 843 >}})

• The stat class methods stat.compute_layer, stat.compute_panel and stat.compute_group are now instance methods and they no longer accept **params arguments. Access to the parameters is through self.params.

• The geom class methods geom.draw_layer and geom.draw_panel do no longer accept **param arguments. Access to the parameters is through self.params.

• Method geom.draw_group now accepts the params argument as a dictionary and not **params.

### New Features

• Plot Composition is here. Using an intuitive algebra, you can now put combine multiple plots into a single graphic. e.g.

  ```python p1 = ggplot(...) p2 = ggplot(...) p3 = ggplot(...)

  (p1 | p2) / p3 ```

• Using [](~plotnine.themes.themeables.plot_title_position) and [](~plotnine.themes.themeables.plot_caption_position) e.g.

  ```python theme(

  plot_title_position="plot", plot_caption_position="plot",

  You can now position the plot_title, plot_subtitle and plot_caption by alignment them with respect to the plot. ({{< issue 838 >}})

• Gained new label tag to create a tag for a plot. You can set it with [](~plotnine.labs) e.g.

  `python labs(tag="A") ` and customise it using these themeables

  [](~plotnine.themes.themeables.plot_tag) and [](~plotnine.themes.themeables.plot_tag_position) and [](~plotnine.themes.themeables.plot_tag_location)

  e.g.

  ```python theme(

  plot_tag="plot", plot_tag_location="plot", plot_tag_position="topright",

• Geoms [](~plotnine.geom_bar) and [](~plotnine.geom_col) have gained new parameter just that controls how the bars align with the axis break point.

• [](~plotnine.geom_sina) has gained new parameter style just like [](~plotnine.geom_violin), which make one-sided (half) sina plots.

• Gained the Anscombe Quartet dataset, [](~plotnine.data.anscombe_quartet).

• Gained new module plotnine.helpers to be a place for some helper functions.

• Gained new helper function [](~plotnine.helpers.get_aesthetic_limits).

• [](~plotnine.geom_point) gained the ability to handle shapes of the form Sequence[tuple[float, float]] e.g.

  `python ((-2, -4), (-2, -1), (0, 1), (2, -1), (2, -4), (-2, -4)) `

  Which declares the vertices of a polygon shape.

### Enhancements

• Included datasets [](~plotnine.data.mpg), [](~plotnine.data.msleep) and [](~plotnine.data.midwest) no longer have any of their columns as categoricals. This matches the respective datasets in R. ({{< issue 913 >}})

• When the width of the violins in [](~plotnine.geom_violin) is wider than their normal area, they now overlap with those closest to the origin on top. This makes it possible to create overlapping ridge plots using half violins.

• [](~plotnine.themes.themeable.legend_key) now inherits from [](~plotnine.themes.themeable.panel_background) and the default themes have been adjusted to rely on this inheritance. So when using the default themes, altering fill parameter of the panel_background will also affect the background of the legend_key.

• The default value for the guide parameter for the identity scales (scale_*_identity) has been reverted to None. This means by default using these scales will not generate a legend.

### Bug Fixes

• Fixed bug in with the legend_key_height themeable where it wasn't applied. ({{< issue 921 >}})

• Fixed bug where justifying axis_text_x and axis_text_y using horizontal and vertical alignment did not work as expected. ({{< issue 927 >}})

• Fixed justifying strip_text within the strip_background. ({{< issue 867 >}})

• Fixed bug where facetting along a column with unused categories could raise an error. ({{< issue 930 >}})

• Fixed bug where computed aesthetic from after_scale are were not applied to the legend. ({{< issue 926 >}})

• Fixed theming of minor x axis ticks.

• Fixed theming of axis_text, axis_text_x and axis_text_y so when they can be overriden if previously set to element_blank().

• Fixed `strip_text_x_background`s to always have equal heights and `strip_text_y_background`s to have equal widths. This applies to cases where the texts have unequal number of lines or they are rotated but have different lengths.

• Fixed the empty space below the plot title (or subtitle) when strip_text_x_background`s are partly or fully aligned within the panel. This space (hole), was not accounted for by any of the themeables. This affected `theme_xkcd and any theme settings that tried to slide the text / background into the panel.

• Fixed the empty space to the left the right margin when the strip_text_y_background`s are partly or fully aligned within the panel. This space (hole), was not accounted for by any of the themeables. This affected `theme_xkcd and any theme settings that tried to slide the text / background into the panel.

• Fixed bug in [](~plotnine.geom_histogram) where mapping to the weight aesthetic lead to an error. ({{< issue 936 >}})

• Fixed bug in [](~plotnine.geom_vline) where you could not map the xintercept aesthetic to a discrete variable.

• Fixed bug in [](~plotnine.geom_hline) where you could not map the yintercept aesthetic to a discrete variable.

• Fixed bug in all manual scales (scale_*_manual) where if you set values to a dict then setting the breaks would lead to an error. ({{< issue 949 >}})

• Fixed using [](~plotnine.theme_void) with facetting so that the strip text are always fully within the figure bounds.

• Fixed the ordinal color scales [](~scale_color_ordinal), [](~scale_color_cmap_d) [](~scale_fill_ordinal) and [](~scale_fill_cmap_d) to handle missing (NaN or None) values. ({{< issue 953 >}})

(2025-01-02) [](https://doi.org/10.5281/zenodo.14587381)

• Fixed [](~plotnine.geom_text) with adjust_text so that the the arrows are drawn between layers with the text/label on top.

(2024-12-16) [](https://doi.org/10.5281/zenodo.14501317)

### Bug Fixes

• Fixed [](~plotnine.geom_text) with adjust_text so that the the arrows are drawn at the same layer (zorder) as the text.

• Fixed [](~plotnine.geom_text) with adjust_text for some cases where the text are placed outside the panels. ({{< issue 899 >}})

• The default aesthetics and aesthetic parameters of geoms (and stats) are now transformed. So you can now set date values as aesthetic parameters. e.g.

  `python geom_point(y=datetime(2024, 12, 11)) `

  if the y aesthetic is mapped to datetime column in another layer.

• Fixed bug for matplotlib>3.10 where the axis_ticks_length for the x-axis had no effect.

(2024-11-26) [](https://doi.org/10.5281/zenodo.14224336)

### Enhancements

• Got rid of a logging information about the fontsize that is recorded for all plots that have a legend. ({{< issue 889 >}})

• When using [](~plotnine.geom_text) with adjust_text, some sensible default arrow properties will be applied.

• Changed the threshold number of keys for when the legend is split into multiple columns from 20 to 15. This only applies in the default case when the user does not set the number of rows or columns i.e. guide_legend(nrow=None, ncol=None). ({{< issue 757 >}})

(2024-11-21)

[](https://doi.org/10.5281/zenodo.14198479)

### Bug Fixes

• Fixed bugs that affected [](~plotnine.geom_dotplot) and [](~plotnine.geom_sina) where data with an index that did not include 0 led to a crash. ({{< issue 888 >}})

• Fixed v0.14.0 regression that made [](~plotnine.scale_color_cmap_d) unusable. ({{< issue 890 >}})

(2024-11-05)

Bug Fixes

• Fix expansion of datetime and timedelta scales when using both the lower and upper addition constants.

• In quarto documents make the output retina even if the fig-format is png.

• Fixed bug where you could not save as pdf if also specifying the aspect_ratio. ({{< issue 885 >}})

(2024-10-28)

[](https://doi.org/10.5281/zenodo.14006850)

### API Changes

• You cannot call print on a ggplot object to show it. This was deprecated in v0.13.0 and it has now been removed. Use [ggplot.show()](plotnine.ggplot.show)

• The color_space parameter of [](~plotnine.scale_color_hue) now accepts the value "hlsuv" instead of "husl". The meaning of has not changed, and "husl" is silently accepted.

• Themeables axis_ticks_direction, axis_ticks_direction_x and axis_ticks_direction_y have be deprecated. In their place, the direction of the ticks can be controlled by using +ve, -ve or complex values for the axis_ticks_length, axis_ticks_length_major, axis_ticks_length_major_x, axis_ticks_length_major_y, axis_ticks_length_minor, axis_ticks_length_minor_x, or axis_ticks_length_minor_y.

### Enhancements

• The family, fontstyle and fontweight parameters of [](~plotnine.geom_text) are now aesthetics ({{< issue 790 >}}).

• plotnine now responds to the fig-width, fig-height and fig-format settings in the meta section of a quarto document.

• [](~plotnine.ggtitle) now accepts title and subtitle as keyword arguments. ({{<issue 804 >}})

• Gained the option [](~plotnine.options.limitsize) that makes it possible to display plots of any size.

  ```python from plotnine.options import set_option

  set_option("figure_format", False) ```

• For [](~plotnine.geom_boxplot) when the outliers are made invisible by giving them no shape, now they do not affect the limits of the plot. ({{< issue 814 >}})

• Made it possile to map an aesthetic value to None. ({{< issue 791 >}})

• The signatures for the scale classes now list all the allowed parameters.

### New Features

• [](~plotnine.geom_text) has gained new aesthetics fontvariant and fontstretch.

### Bug Fixes

• Fix layers 3 and above not to overlap the axis lines if there are any ({{< issue 798 >}}).

• Fixed bug in [](~plotnine.geoms.geom_segment) where the lineend parameter was ignored. ({{< issue 727 >}})

• Fixed [](~plotnine.stat_summary_bin) to work with continuous x aesthetic when specifying the binwidth or breaks. ({{< issue 824 >}})

• Fixed [](~plotnine.PlotnineAnimation) not to draw a second legend at the bottom-left corner. ({{< issue 816 >}})

• Fixed bug where setting theme(text=element_blank()) would raise and exception.

• Fixed datetime and timedelta scales so they can be expanded by adding constant timedelta values.

(2024-05-09)

[](https://doi.org/10.5281/zenodo.11172701)

### Bug Fixes

• Fixed [](~plotnine.geom_label) to work with a boxstyle of any following square, circle, darrow, larrow, rarrow, roundtooth or sawtooth.({{< issue 779 >}})

### Enhancements

• Stopped spurious warnings of the form PlotnineWarning: Failed to apply `after_scale` modifications to the legend. when the after_scale mapping is for another aestetic.

• Added width and height as default aesthetics of [](~plotnine.geom_tile).

(2024-04-26)

[](https://doi.org/10.5281/zenodo.11075182)

### Bug Fixes

• Fixed bug in [](~plotnine.stat_smooth) where you could not set the family when using a glm. ({{< issue 769 >}})

• Fixed bug in [](~plotnine.position_dodge2) the widths of the dodged objects were mixed up. ({{< issue 772 >}})

• Fixed [](~plotnine.geom_text) to work better with [adjustText](https://pypi.org/project/adjustText/) v1.0.0 and above.

• Fixed images generated in quarto so that they have the dimensions (taking the dpi into account) that are specified in theme. ({{< issue 773 >}})

### New

• Added themeable [](~plotnine.themes.themeable.svg_usefonts). ({{< issue 756 >}})

### Enhancements

• Added _palmerpenguins_ dataset.

(2024-04-03)

Bug Fixes

• Fixed regression in v0.13.3 where setting some text elements element_blank led to an error. ({{< issue 764 >}})

(2024-03-27)

Bug Fixes

• Fixed layout manager to make space for the strip_text when there is no strip_background. ({{< issue 760 >}})

• Made the default position of guide_legend text to be right. ({{< issue 761 >}})

• Fixed aligning (ha & va) of plot_title, plot_subtitle, plot_caption, axis_title_x, axis_title_y to work with float values in the range [0, 1].

(2024-03-14)

Enhancements

• Drawing the plot ensures that pandas Copy-on-Write is turned off. Plotnine is not yet compatible with Copy-on-Write so this prevents errors for users who have turned on the option.

(2024-03-06)

Bug Fixes

• Fixed a bug where a legend with blank title or text could result in a wrong justification.

• Fixed a bug where setting legend justification to a string i.e one of left, right, top, bottom, center had no effect.

(2024-02-20)

[](https://doi.org/10.5281/zenodo.10684553)

### API Changes

• Requires python >= 3.9

• Using the print or repr functions to draw and show the plot has been deprecated. Use [ggplot.show()](plotnine.ggplot.show).

• The name of the calculated aesthetic of [](~plotnine.stat_function) changed from y to fx.

• [](~plotnine.stat_ecdf) has gained the pad parameter. The default is set to True, which pads the domain with -inf and inf so that the ECDF does not have discontinuities at the extremes. To get the behaviour, set pad to False. ({{< issue 725 >}})

• Removed the environment parameter from ggplot.

• When a ggplot object is the last in a jupyter cell, the output image will not be followed by string meta information about the figure/image.

  This will happen even if the backend is set to an interactive one.

  If you set the backend to an interactive one, use [](~plotnine.ggplot.show) to draw the plot.

• The default horizontal alignment for the plot title is center if it there is no subtitle. When there is a subtitle, the default is to have both aligned to the left.

• Some parameters that control the look and feel of guide_colorbar and guide_legend have been removed. For their place, the theme parameter has been introduced and it gives better control of the look and feel.

• Themeables legend_entry_spacing, legend_entry_spacing_x and legend_entry_spacing_y have been renamed to legend_key_spacing, legend_key_spacing_x and legend_key_spacing_y respectively

• [](~plotnine.facet_grid) now accepts two parameters, rows and cols, to specify the variables along the two dimensions of the panels.

  The previous way of using a single parameter will still work if it is a string. For cases where the value was a list, e.g.

  `python facet_grid(facets=["col1", "col2"]) `

  can be rewritten as any one of;

  `python facet_grid("col1", "col2") facet_grid(["col1"], ["col2"]) facet_grid(rows="col1", cols="col2") facet_grid(rows=["col1"], cols=["col2"]) `

• The facets parameter in [](~plotnine.facet_wrap) has also changed to a more straight forward specification for the column variables. It expects a single string or a list/tuple of strings. ({{< issue 545 >}})

  However, the R-style formula strings are still silently accepted.

### New

• Added symmetric logarithm transformation scales [](~plotnine.scale_x_symlog) and [](~plotnine.scale_y_symlog)

• Gained themeables

  • [](~plotnine.themes.themeable.plot_margin_left)

  • [](~plotnine.themes.themeable.plot_margin_right)

  • [](~plotnine.themes.themeable.plot_margin_top)

  • [](~plotnine.themes.themeable.plot_margin_bottom)

  to set the plot margin on each side independently.

• Gained themeables

  • [](~plotnine.themes.themeable.axis_ticks_length_major_x)

  • [](~plotnine.themes.themeable.axis_ticks_length_major_y)

  • [](~plotnine.themes.themeable.axis_ticks_length_minor_x)

  • [](~plotnine.themes.themeable.axis_ticks_length_minor_y)

  to control the x & y axis ticks length.

• Gained themeables

  • [](~plotnine.themes.themeable.axis_ticks_pad_major_x)

  • [](~plotnine.themes.themeable.axis_ticks_pad_minor_y)

  to control the x & y tick padding.

• Some parameters in [](~plotnine.element_text) can now accept lists/tuples to set the values on individual text objects. ({{< issue 724 >}})

• Gained the option [](~plotnine.options.figure_format) to set the format of the inline figures in an interactive session. e.g.

  ```python from plotnine.options import set_option

  set_option("figure_format", "svg") ```

  will output all subsequent figures in svg format.

• Improved support for customizing guides/legends.

  • You can now add a frame to the colobar

  • You can now apply themes to individual guides, e.g.

    `py + guides(color=guide_colorbar(theme=theme_xkcd())) ` or

    `py + guides(color=guide_legend(theme=theme_minimal()) `

  • You can now place legends at more than one position around the panels. e.g.

    ```py + guides(

    color=guide_colorbar(position="left"), fill=guide_legend(position="bottom"), size=guide_legend(position="bottom")

    Puts the fill and size guides at the bottom, and the color guide on the left.

  • You can easily justify the legend along the four edges of the space around the panel area.

  • You can now place the legend inside the panels with easily control its location.

• The space parameter of [](~plotnine.facet_grid) now responds to the values free, free_x and free_y to have panels whose relative width and/or height depends on the data range. ({{< issue 545 >}})

### Bug Fixes

• Fixed handling of minor breaks in [](~plotnine.scales.scale_continuous.scale_continuous) to accept numpy arrays and when the scale has a transform, that the minor breaks are supplied in user space and not transform space. Just like the major breaks. ({{< issue 685 >}})

• Fixed theming of axis_ticks with the size parameter. ({{< issue 703 >}})

• Fixed space handling around axis_label, axis_text and axis_ticks when the ticks are turned off.

• Fixed bug in [](~plotnine.geom_path) where the lineend parameter was ignored. ({{< issue 727 >}})

• Fixed bug where `theme(legend_background=element_blank())`{.py} messed up the position of the legend, instead of only removing the background.

• Fixed using facet_grid with a column named key. ({{< issue 734 >}})

• Fixed using legend when using an identity scale and reordering the breaks. ({{< issue 735 >}})

• Fixed drawing the upper outline of geom_ribbon. ({{< issue 728 >}})

• Fixed issue where the gridlines overlap the panel border. ({{< issue 638 >}})

### Enhancements

• All __all__ variables are explicitly assigned to help static typecheckers infer module attributes. ({{< issue 685 >}})

• You can now pickle the drawn matplotlib figures. ({{< issue 729 >}})

• The facet titles in the strip_text are now better aligned are appear more centered within the strip_background.

(2023-11-06)

Bug Fixes

• Fixed to work with to work for .

• Fixed the x limits when plotting .

• Fixed and when there is no x aesthetic.

Enhancements

• Return group counts for .

(2023-09-01)

Enhancements

• Resolved Future Warnings from pandas-2.1.0

(2023-07-21)

• This is a maintenance release that prevents newer versions of mizani from breaking plotnine. This version depends on mizani<0.10.0.

(2023-05-09)

[](https://doi.org/10.5281/zenodo.7919297)

### New Features

• A layout manager. Now you do not have to adjust spacing parameters to prevent objects around the panels from overlapping. Specifically, you can:

  1. Set the legend position to "top", "left" or "bottom"

  2. Use a large or multiline plot title

  3. Use a large or multiline plot caption

  4. Use [](~plotnine.facet_wrap) with `scales="free"`{.py} `scales="free_x"`{.py} or `scales="free_y"`{.py}

  You can now also align the plot_title, axis_title_x, axis_title_y and plot_caption with respect to the panels. Set these to "left", "right" & "center" for the horizontal flowing text. And "top", "right" & "center" for the vertical flowing text.

  Also, the size of the figure is exactly determined by the theme setting. For example, this:

  `py theme(figure_size=(8, 6), dpi=100) `

  will create an 800px x 600px image.

• You can create a subtitle using [](~plotnine.labs) and style it using the plot_subtitle parameter to [](~plotnine.theme).

  ```py theme(plot_subtitle=element_text(size=8))

### Enhancements

• [](~plotnine.ggplot) object gained a new method [](~plotnine.ggplot.save_helper). It gives you access to the matplotlib figure that will be saved to file.

• When plotting with an ipython interactive backend (e.g. in a jupyter notebook). The default image output is retina. You do not need to run this command.

  `py %config InlineBackend.figure_format = "retina" `

  Plotnine still respects any values set the user.

• In an interactive setting, after drawing an image. The size of the figure (in pixels) is printed e.g. <Figure Size: (640 x 480)>. Previously, something like <ggplot: (336175301)> was printed.

### API Changes

• [](~plotnine.ggplot.__add__) and [](~plotnine.ggplot.__iadd__) now accept the same types of objects. In this change [](~plotnine.ggplot.__iadd__) has gained the ability to accept a list of objects.

• [](~plotnine.ggplot.draw) no longer accepts the argument return_ggplot and the return value is always a matplolib figure.

• Themeables strip_margin, strip_margin_x and strip_margin_y) have been renamed to [](~plotnine.themes.themeable.strip_align), [](~plotnine.themes.themeable.strip_align_x) [](~plotnine.themes.themeable.strip_align_y) respectively.

• [](~plotnine.themes.themeable.subplots_adjust) has been deprecated. You no longer need to use `theme(subplots_adjust={"right": 0.85})`{.py} and the like to make space for the legend or text around the panels. In the future, this will through an error.

• Changed default font-family (san-serif) from DejaVu Sans to Helvetica.

### Bug Fixes

• Fixed bug where a discrete position scale failed when mapping an empty variable. ({{< issue 647 >}})

• Fixed bug where [](~plotnine.facet_grid) with a datetime column run into an exception. ({{< issue 629 >}})

• Fixed bug where [](~plotnine.geom_violin) with facetting and "scales = free" did not work. ({{< issue 655 >}})

• Fixed bug in [](~plotnine.position_dodge2) to work with preserve="single" for [](~plotnine.geom_rect) and any other geoms that accept a min-max range along the x-axis.

• Fixed legend for [](~plotnine.geom_point) to accurately display transparent fill colors that have been manually set. ({{< issue 665 >}})

• Fix issue where infinite limits for the x or y scales lead to an exception. ({{< issue 664 >}})

• Fixed [](~plotnine.geom_text) and [](~plotnine.geom_label) when used with string formatting so that missing values are removed. ({{< issue 651 >}})

## v0.10.1 (2022-09-10)

[](https://doi.org/10.5281/zenodo.7124917)

This is a re-release of v0.10.0.

In the previous release the project description fileformat changed and not all references to it were corrected. PYPI read file that did not exist, got no description. This release is fixes error.

## v0.10.0 (2022-09-10)

[](https://doi.org/10.5281/zenodo.7124912)

### Bug Fixes

• Fixed bug in [](~plotnine.stat_bin_2d) where bins whose edges are zero or negative would yield the wrong plot. ({{< issue 604 >}})

• Fixed bug [](~plotnine.stat_density_2d) which had been broken by Matplotlib 1.6.0. ({{< issue 619 >}})

• Fixed [](~plotnine.geom_text) when using adjust_text for the arrows to have the same color as the text.

### New Features

• [](~plotnine.geom_ribbon) acquired new parameter where which can be used shade within given limits .

• Added support for objects with a to_pandas method to convert them to a pandas dataframe. You can now pass in [polars](https://pola.rs) dataframes.

• [](~plotnine.geom_ribbon) acquired new parameter outline_type which controls how to stroke the boundaries of the shaded area. This parameter is also available to [](~plotnine.geom_area) and [](~plotnine.geom_density). ({{< issue 605 >}})

### API Changes

• The automatic groups generated by the system and depending on the aesthetic mappings now only depend those aesthetics that have scales. This is more strict than has been, should affect very few cases of code that has been written and it should be less surprising to the users.

• [](~plotnine.geom_area) and [](~plotnine.geom_density) now default to showing only the upper outline/boundary of the area. Use outline_type="full" for the old behaviour.

## v0.9.0 (2022-07-01)

[](https://doi.org/10.5281/zenodo.7124918)

### API Changes

• For the calls to ggplot, the order of the positional arguments is (data, mapping) and for calls geoms and stats the order is (mapping, data). In practice, you can still provide one/two positional arguments in any order. However, the are a few cases where old code will breaks due to duplicate parameters.

### New Features

• Added [](~plotnine.geom_pointdensity), a 2D density plot that does not hide the distribution of the individual data points.

• [](~plotnine.position_dodge2) gained the ability to reverse the order of the plotted groups. ({{< issue 515 >}})

• Added [](~plotnine.theme_tufte), a theme that reduces the distractions around plot data.

• [](~plotnine.labs) can now be used to create a caption. This caption can be styled using the plot_caption parameter to [](~plotnine.theme).

  `py theme(plot_caption=element_text(size=13)) `

• You can now align the plot_title horizontally to the left or right.

  `py theme(plot_title=element_text(ha="left")) `

  Before, the title was always centered.

### Bug Fixes

• Fixed bug in [](~plotnine.facet_grid) and [](~plotnine.facet_wrap) where the drop parameter was ignored. ({{< issue 510 >}})

• Fixed issue with [](~plotnine.annotation_logticks) where the wrong range was used for the x|y axis. ({{< issue 525 >}})

• Fixed bug in [](~plotnine.geom_smooth) where using a coordinate transformation without computing the standard error led to a crash. ({{< issue 526 >}})

• Fixed bug where you could not specific the cap/end of a dashed line when styling a plot with [](~plotnine.element_line).

• Fixed legend for [](~plotnine.geom_map) so that the entries have the same stroke and points on the map. ({{< issue 534 >}})

• Fixed [](~plotnine.geom_histogram) for some cases when it fails to automatically determine the number of bins. ({{< issue 543 >}})

• Fixed [](~plotnine.facet_grid) and [](~plotnine.facet_wrap) when mapping to lists/arrays/series so that the rows mapped this way are not mixed up. ({{< issue 548 >}})

• Fixed [](~plotnine.stat_bin_2d) not to error for matplotlib >= 3.5.0 so that it does not throw a Numpy error. ({{< issue 567 >}})

• Fixed [](~plotnine.geom_map) to be able to draw Polygons with holes in them.

• Fixed [](~plotnine.geom_map) to be able to draw MultiPolygons.

• Fixed [](~plotnine.scale_x_discrete) and [](~plotnine.scale_x_discrete) to work properly with None values. ({{< issue 523 >}})

• Fixed [](~plotnine.geom_point) to respect not to use the fill mapping on unfilled shapes. ({{< issue 100 >}})

• Fixed [](~plotnine.position_stack) to work with scales that have non-linear transformations. e.g. [](~plotnine.scale_y_log10). ({{< issue 580 >}})

• Fixed scales to work with limits passed as a function.

• Fixed [](~plotnine.themes.themeable.axis_ticks) so you can change the colour of the axis ticks. This was probably a regression due to changes in Matplotlib.

• Fixed [](~plotnine.themes.themeable.panel_ontop) so that if is set to False, then the data visualised below the grid-lines. ({{< issue 585 >}})

• Fixed [](~plotnine.geom_ribbon), [](~plotnine.geom_area) and [](~plotnine.geom_density) to work with [](~plotnine.coord_flip). ({{< issue 596 >}})

### Enhancements

• [](~plotnine.stat_summary) now has a default summary function. ({{< issue 528 >}})

• [](~plotnine.stat_density) now uses a fast computation path for gaussian densities with no weights. This was probably a regression.

• [](~plotnine.geom_map) can now draw MultiPoints, MultiLineStrings and MultiPolygons.

• [](~plotnine.geom_text) with adjust_text can now be used in more than one layer with good enough results.

## v0.8.0 (2021-03-24)

[](https://doi.org/10.5281/zenodo.4636791)

### API Changes

• How you map to calculated aesthetics has changed. Use the [](~plotnine.after_stat) function. The old methods 'stat(name)' and '..name..' have been deprecated.

### New Features

• You can now map to aesthetics at three different stages. See [](~plotnine.aes), [](~plotnine.after_stat), [](~plotnine.after_scale) and [](~plotnine.stage).

• [](~plotnine.geom_violin) gained the a new parameter style with which you can draw half violin (density curve on one side and flat on the other).

• Added [](~plotnine.geom_raster).

• geoms gained new parameter raster for the [](~plotnine.layer.layer). You can use it to rasterize any layer when the resulting plot is of vector format e.g. pdf.

• Using the space parameter, [](~plotnine.facet_grid) gained the ability to have rows and columns of panels of different sizes.

### Bug Fixes

• Fixed issue where some plots with a colorbar would fail for specific themes. ({{< issue 424 >}})

• Fixed [](~plotnine.geom_map) to plot MultiLineString geom types.

• Fixed [](~plotnine.geom_text) to allow any order of mapping and data positional arguments.

• Fixed bug were the plotted image may have ignored theming that relied on some Matplotlib rcParams. ({{< issue 451 >}})

• Fixed the weight aesthetic in [](~plotnine.geom_boxplot), previously ignored it is now recognised. ({{< issue 438 >}})

• Fixed [](~plotnine.annotation_logticks) and [](~plotnine.annotation_stripes) to work without global data and aesthetics. ({{< issue 469 >}})

• Fix [](~plotnine.scale_shape_discrete) when printing many unfilled shapes not to assign the same shapes to more than one group. ({{< issue 473 >}})

• Fixed bug in [](~plotnine.stat_ellipse) where the center of the ellipse assuming a multivariate t-distribution was incorrectly calculated. ({{< issue 493 >}})

• Fixed calculation of ndensity in [](~plotnine.stat_bin). ({{< issue 494 >}})

### Enhancements - Manual scales now match the values of the breaks if the breaks are given.

({{< issue 445 >}})

• Using print to show a ggplot object will not show the hash (<ggplot: ...>) anymore. There is now a difference between repr(p) and str(p). ({{< issue 453 >}})

• Added option to for the base_family of a theme, now you can set it once with and have it be applied to all themes. ({{< issue 436 >}})

  `py from plotnine.options import set_option set_option('base_family', 'Comic Sans MS') `

• You can now add None to a ggplot, doing so returns a copy of the the ggplot object. ({{< issue 474 >}})

• Better handling of multiline facet labels. ({{< issue 484 >}})

## v0.7.1 (2020-08-05)

[](https://doi.org/10.5281/zenodo.3973626)

### Bug Fixes

• Fixed issue where a plot has no data and the geoms have no data, but the mappings are valid. ({{< issue 404 >}})

• Fixed preserve="single" in [](~plotnine.position_dodge) and [](~plotnine.position_dodge2) to work for geoms that only have x aesthetic and not xmin and xmax e.g [](~plotnine.geom_text).

• Fix regression in v0.7.0 where plots with a colorbar would fail if using [](~plotnine.theme_matplotlib).

## v0.7.0 (2020-06-05)

[](https://doi.org/10.5281/zenodo.3878645)

### API Changes

• Changed the default method of calculating bandwidth for all stats that use kernel density estimation. The affected stats are [](~plotnine.stat_density), [](~plotnine.stat_ydensity), and [](~plotnine.stat_sina). These stats can now work with groups that have a single unique value.

• Changed scale_colour_continuous to refer to the same scale as [](~plotnine.scale_color_continuous).

• Changed [](~plotnine.scale_color_cmap) so the parameter cmap_name refers to the name of the color palette and name refers to the name of the scale. ({{< issue 371 >}})

### New Features

• aes got an internal function reorder which makes it easy to change the ordering of a discrete variable according to some other variable/column.

• [](~plotnine.stat_smooth) can now use formulae for linear models.

### Bug Fixes

• Fixed issue where a wrong warning could be issued about changing the transform of a specialised scale. It mostly affected the timedelta scale.

• Fixed [](~plotnine.geom_violin) and other geoms when used with position="dodge" not to crash when if a layer has an empty group of data.

• Fixed bug in [](~plotnine.geom_path) for some cases when groups had less than 2 points. ({{< issue 319 >}})

• Fixed all stats that compute kernel density estimates to work when all the data points are the same. ({{< issue 317 >}})

• Fixed issue where setting the group to a string value i.e. group="string" outside aes() failed due to an error.

• Fixed issue where discrete position scales could not deal with fewer limits than those present in the data. ({{< issue 342 >}})

• Fixed issue with using custom tuple linetypes~ with [](~plotnine.scale_linetype_manual). ({{< issue 352 >}})

• Fixed [](~plotnine.geom_map) to work with facets. ({{< issue 359 >}})

• Fixed [](~plotnine.position_jitterdodge) to work when color is used as an aesthetic. ({{< issue 372 >}})

• Fixed [](~plotnine.geom_qq) to work with facets. ({{< issue 379 >}})

• Fixed skewed head in [](~plotnine.arrow) when drawn on facetted plot. ({{< issue 388 >}})

• Fixed issue with [](~plotnine.stat_density) where weights could not be used with a gaussian model. ({{< issue 392 >}})

• Fixed bug where [](~plotnine.guide_colorbar) width and height could not be controlled by [](~plotnine.themes.themeable.legend_key_width) and [](~plotnine.themes.themeable.legend_key_height). ({{< issue 360 >}})

### Enhancements

• You can now set the bandwidth parameter bw of [](~plotnine.stat_ydensity).

• Parameters ha and va of [](~plotnine.geom_text) have been converted to aesthetics. You can now map to them. ({{< issue 325 >}})

• All themes (except theme_matplotlib) now do not show minor ticks. ({{< issue 348 >}})

## v0.6.0 (2019-08-21)

[](https://doi.org/10.5281/zenodo.3373970)

### API Changes

• The draw parameter of [](~plotnine.geom_map) has been removed. Shapefiles should contain only one type of geometry and that is the geometry that is drawn.

• Ordinal (Ordered categorical) columns are now mapped to ordinal scales. This creates different plots.

• The default mapping for the computed aesthetic size of [](~plotnine.stat_sum) has changed to 'stat(n)'. This also changes the default plot for [](~plotnine.geom_count).

### New Features

• [](~plotnine.geom_text) gained the adjust_text parameter, and can now repel text.

• Added [](~plotnine.annotation_logticks).

• Added [](~plotnine.geom_sina)

• Added scales for ordinal (ordered categorical) columns.

• [](~plotnine.geom_step) gained the option mid for the direction parameter. The steps are taken mid-way between adjacent x values.

• Added [](~plotnine.annotation_stripes).

### Bug Fixes

• Fixed bug where facetting would fail if done on a plot with annotation(s) and one of the facetting columns was also a variable in the environment.

• Fixed bug where [](~plotnine.coord_flip) would not flip geoms created by [](~plotnine.geom_rug). ({{< issue 216 >}})

• Fixed bug where plots with [](~plotnine.theme_xkcd) cannot be saved twice. ({{< issue 199 >}})

• Fixed bug that made it impossible to map to columns with the same name as a calculated columns of the stat. ({{< issue 234 >}})

• Fixed bug in [](~plotnine.geom_smooth) that made it difficult to use it with stats other than [](~plotnine.stat_smooth). ({{< issue 242 >}})

• Fixed bug in [](~plotnine.position_dodge) where by bar plot could get thinner when facetting and using preserve = 'single'. ({{< issue 224 >}})

• Fixed bug in [](~plotnine.coord_trans) where if the transformation reversed the original limits, the order in which the data was laid out remained unchanged. ({{< issue 253 >}})

• Fixed bug in [](~plotnine.stat_count) where float weights were rounded and lead to a wrong plot. ({{< issue 260 >}})

• Fixed bug where one could not use the British spelling colour to rename a color scale. ({{< issue 264 >}})

• Fixed bug in [](~plotnine.lims), [](~plotnine.xlim), and [](~plotnine.ylim) where datetime and timedelta limits resulted in an error.

• Fixed bug where [](~plotnine.geom_rect) could not be used with [](~plotnine.coord_trans). ({{< issue 256 >}})

• Fixed bug where using free scales with facetting and flipping the coordinate axes could give unexpected results. ({{< issue 286 >}})

• Fixed unwanted tick along the axis for versions of Matplotlib >= 3.1.0.

• Fixed [](~plotnine.geom_text) not to error when using hjust and vjust. ({{< issue 287 >}})

• Fixed bug where [](~plotnine.geom_abline) [](~plotnine.geom_hline) and [](~plotnine.geom_vline) could give wrong results when used with [](~plotnine.coord_trans).

• Fixed bug where layers with only infinite values would lead to an exception if they were the first layer encountered when choosing a scale.

### Enhancements

• Legends are now plotted in a predictable order which dedends on how the plot is constructed.

• The spokes drawn by [](~plotnine.geom_spoke) can now have a fixed angle.

• Aesthetics that share a scale (e.g. color and fill can have the same scale) get different guides if mapped to different columns.

• When the transform of a specialised (one that is not and identity scale) continuous scale is altered, the user is warned about a possible error in what they expect. ({{< issue 254 >}}, {{< issue 255 >}})

• The method_args parameter in [](~plotnine.stat_smooth) can now differentiate between arguments for initialising and those for fitting the smoothing model.

• [](~plotnine.position_nudge) can now deal with more geoms e.g. [](~plotnine.geom_boxplot).

• The limits parameter of [](~plotnine.scale_x_discrete) and

  [](~plotnine.scale_y_discrete) can now be a function.

• The width of the boxplot can now be set irrespective of the stat.

• The mid-point color of [](~plotnine.scale_color_distiller) now matches that of the trained data.

• The way in which layers are created has been refactored to give packages that that extend plotnine more flexibility in manipulating the layers.

• You can now specify one sided limits for coordinates. e.g. `coord_cartesian(limits=(None, 10))`{.py}.

• All the themeables have been lifted into the definition of [](~plotnine.theme) so they can be suggested autocomplete.

## v0.5.1 (2018-10-17)

[](https://doi.org/10.5281/zenodo.1464803)

### Bug Fixes

• Changed the dependency for mizani to v0.5.2. This fixes an issue where facetting may create plots with missing items. ({{< issue 210 >}})

## v0.5.0 (2018-10-16)

[](https://doi.org/10.5281/zenodo.1464204)

### API Changes

• Plotnine 0.5.0 only supports Python 3.5 and higher

• geopandas has been removed as a requirement for installation. Users of [](~plotnine.geom_map) will have to install it separately. ({{< issue 178 >}})

### Bug Fixes

• Fixed issue where with the subplots_adjust themeable could not be used to set the wspace and hspace Matplotlib subplot parameters. ({{< issue 185 >}})

• Fixed in [](~plotnine.stat_bin) where setting custom limits for the scale leads to an error. ({{< issue 189 >}})

• Fixed issue interactive plots where the x & y coordinates of the mouse do not show. ({{< issue 187 >}})

• Fixed bug in [](~plotnine.geom_abline) where passing the mapping as a keyword parameter lead to a wrong plot. ({{< issue 196 >}})

• Fixed issue where minor_breaks for transformed scaled would have to be given in the transformed coordinates. Know they are given the data coordinates just like the major breaks.

### Enhancements

• For all geoms, with [](~plotnine.coord_cartesian) float('inf') or np.inf are interpreted as the boundary of the plot panel.

• Discrete scales now show missing data (None and nan). This behaviour is controlled by the new na_translate option.

• The minor_breaks parameter for continuous scales can now be given as an integer. An integer is taken to control the number of minor breaks between any set of major breaks.

## v0.4.0 2018-01-08

[](https://doi.org/10.5281/zenodo.1325309)

### API Changes

• Calculated aesthetics are accessed using the plotnine.aes.stat function. The old method (double dots ..name..) still works.

• [](~plotnine.stat_qq) calculates slightly different points for the theoretical quantiles.

• The scales (when set to free, free_x or free_y) parameter of [](~plotnine.facet_grid) and [](~plotnine.facet_wrap) assigns the same scale across the rows and columns.

### New Features

• Added [](~plotnine.geom_qq_line) and [](~plotnine.stat_qq_line), for lines through Q-Q plots.

• Added [](~plotnine.geom_density_2d) and [](~plotnine.stat_density_2d).

• Added [](~plotnine.stat_ellipse).

• Added [](~plotnine.geom_map).

• Plotnine learned to respect plydata groups.

• Added [](~plotnine.stat_hull).

• Added [](~plotnine.ggplot.save_as_pdf_pages).

### Bug Fixes

• Fixed issue where colorbars may chop off the colors at the limits of a scale.

• Fixed issue with creating fixed mappings to datetime and timedelta type values. ({{< issue 88 >}})

• Fixed [](~plotnine.scale_x_datetime) and [](~plotnine.scale_y_datetime) to handle the intercepts along the axes. ({{< issue 97 >}})

• Fixed [](~plotnine.stat_bin) and [](~plotnine.stat_bin_2d) to properly handle the breaks parameter when used with a transforming scale.

• Fixed issue with x and y scales where the name of the scale was ignored when determining the axis titles. Now, the name parameter is specified, it is used as the title. ({{< issue 105 >}})

• Fixed bug in discrete scales where a column could not be mapped to integer values. ({{< issue 108 >}})

• Make it possible to hide the legend with theme(legend_position="none"). ({{< issue 119 >}})

• Fixed issue in [](~plotnine.stat_summary_bin) where some input values gave an error. ({{< issue 123 >}})

• Fixed [](~plotnine.geom_ribbon) to sort data before plotting. ({{< issue 127 >}})

• Fixed IndexError in [](~plotnine.facet_grid) when row/column variable has 1 unique value. ({{< issue 129 >}})

• Fixed [](~plotnine.facet_grid) when scale="free", scale="free_x" or scale="free_y", the panels share axes along the row or column.

• Fixed [](~plotnine.geom_boxplot) so that user can create a boxplot by specifying all required aesthetics. ({{< issue 136 >}})

• Fixed [](~plotnine.geom_violin) to work when some groups are empty. ({{< issue 131 >}})

• Fixed continuous scales to accept minor=None. ({{< issue 120 >}})

• Fixed bug for discrete position scales, where drop=False did not drop unused categories. ({{< issue 139 >}})

• Fixed bug in [](~plotnine.stat_ydensity) that caused an exception when a panel had no data. ({{< issue 147 >}})

• Fixed bug in [](~plotnine.coord_trans) where coordinate transformation and facetting could fail with a KeyError. ({{< issue 151 >}})

• Fixed bug that lead to a TypeError when aesthetic mappings to could be recognised as being groupable. It was easy to stumble on this bug when using [](~plotnine.geom_density). ({{< issue 165 >}})

• Fixed bug in [](~plotnine.facet_wrap) where some combination of parameters lead to unexpected panel arrangements. ({{< issue 163 >}})

• Fixed bug where the legend text of colorbars could not be themed. ({{< issue 171 >}})

## v0.3.0 (2017-11-08)

### API Changes

• [](~plotnine.geom_smooth) gained an extra parameter legend_fill_ratio that control the area of the legend that is filled to indicate confidence intervals. ({{< issue 32 >}})

• [](~plotnine.ggplot.save) gained an extra parameter verbose. It no longer guesses when to print information and when not to.

• [](~plotnine.ggplot.draw) gained an extra parameter return_ggplot.

• If the minor_breaks parameter of scales is a callable, it now expects one argument, the limits. Previously it accepted breaks and limits.

### New Features

• Added [](~plotnine.animation.PlotnineAnimation) for animations.

• Added [](~plotnine.watermark) for watermarks.

• Added datetime scales for alpha, colour, fill and size aesthetics

### Enhancements

• Changed parameter settings for [](~plotnine.stat_smooth).

  1. Default span=0.75 instead of 2/3

  2. When using loess smoothing, the control parameter surface is only set to the value 'direct' if predictions will be made outside the data range.

• Better control of scale limits. You can now specify individual limits of a scale.

  `py scale_y_continuous(limits=(0, None)) xlim(None, 100) `

  You can also use [](~plotnine.expand_limits)

• Low and high [](~plotnine.scales.scale.scale) limits can now be expanded separately with different factors multiplicative and additive factors.

• The layer parameter show_legend can now accept a dict for finer grained control of which aesthetics to exclude in the legend.

• Infinite values are removed before statistical computations stats. ({{< issue 40 >}}).

  stats also gained new parameter na_rm, that controls whether missing values are removed before statistical computations.

• [](~plotnine.qplot) can now use the name and a Pandas series to label the scales of the aesthetics.

• You can now put stuff to add to a ggplot object into a list and add that that instead. No need to wrap the list around the internal class Layers.

  `py lst = [geom_point(), geom_line()] g = ggplot(df, aes('x', 'y')) print(g + lst) `

  Using a list allows you to bundle up objects. It can be convenient when creating some complicated plots. See the Periodic Table Example.

• You can now use a dict (with manual scales) to map data values to aesthetics. ({{< issue 169 >}})

• You can now specify infinite coordinates with [](~plotnine.geom_rect). ({{< issue 166 >}})

### Bug Fixes

• Fixed bug where facetting led to a reordering of the data. This would manifest as a bug for geoms where order was important. ({{< issue 26 >}})

• Fix bug where facetting by a column whose name (eg. class) is a python keyword resulted in an exception. ({{< issue 28 >}})

• Fix bug where y-axis scaling was calculated from the xlim argument.

• Fix bug where initialising geoms from stats, and positions from geoms, when passed as classes (e.g. `stat_smooth(geom=geom_point)`{.py}, would fail.

• Fixed bug in [](~plotnine.ggplot.save) where specifying the width and height would mess up the strip_text and spacing for the facetted plots. ({{< issue 44 >}}).

• Fixed bug in [](~plotnine.geom_abline), [](~plotnine.geom_hline) and [](~plotnine.geom_vline) where facetting on a column that is not mapped to an aesthetic fails. ({{< issue 48 >}})

• Fixed bug in [](~plotnine.geom_text), the fontstyle parameter was being ignored.

• Fixed bug where boolean data was mapped to the same value on the coordinate axis. ({{< issue 57 >}})

• Fixed bug in [](~plotnine.facet_grid) where the scales sometimes has no effect. ({{< issue 58 >}})

• Fixed bug in [](~plotnine.stat_boxplot) where setting the width parameter caused an exception.

## v0.2.1 (2017-06-22)

• Fixed bug where manually setting the aesthetic fill=None or fill="None" could lead to a black fill instead of an empty fill.

• Fixed bug where computed aesthetics could not be used in larger statements. ({{< issue 7 >}})

• Fixed bug in [](~plotnine.stat_summary) where the you got an exception for some types of the x aesthetic values.

• Fixed bug where `ggplot(data=df)`{.py} resulted in an exception.

• Fixed missing axis ticks and labels for [](~plotnine.facet_wrap) when the scales are allowed to vary (e.g scales="free") between the panels.

• Fixed bug in [](~plotnine.stat_density) where changing the x limits lead to an exception. ({{< issue 22 >}})

## v0.2.0 (2017-05-18)

• Fixed bug in [](~plotnine.scale_x_discrete) and [](~plotnine.scale_y_discrete) where if they were instantiated with parameter limits that is either a numpy array or a pandas series, plotting would fail with a ValueError.

• Fixed exceptions when using [](pandas.pivot_table) for Pandas v0.20.0. The API was [fixed](http://pandas.pydata.org/pandas-docs/version/0.20/whatsnew.html#pivot-table-always-returns-a-dataframe).

• Fixed issues where lines/paths with segments that all belonged in the same group had joins that in some cases were "butted".

### API Changes

• [](~plotnine.geom_text) now uses ha and va as parameter names for the horizontal and vertical alignment. This is what matplotlib users expect. The previous names hjust and vjust are silently accepted.

• plotnine.layer.Layers can now be used to bundle up geoms and stats. This makes it easy to reuse geoms and stats or organise them in sensible bundles when making complex plots.

## v0.1.0 (2017-04-25)

First public release