merge master into hexbin

Author: nicolaskruchten

Diff for: .gitignore

@@ -46,3 +46,4 @@ temp-plot.html
 doc/python/.ipynb_checkpoints
 doc/python/.mapbox_token
 doc/.ipynb_checkpoints
+doc/check-or-enforce-order.py

Diff for: CHANGELOG.md

@@ -2,15 +2,45 @@
 All notable changes to this project will be documented in this file.
 This project adheres to [Semantic Versioning](http://semver.org/).
 
-## [4.8.2] - unreleased
+## [4.9.0] - unreleased
+
+### Added
+
+- `px.NO_COLOR` constant to override wide-form color assignment in Plotly Express ([#2614](https://github.com/plotly/plotly.py/pull/2614))
+- `facet_row_spacing` and `facet_col_spacing` added to Plotly Express cartesian 2d functions ([#2614](https://github.com/plotly/plotly.py/pull/2614))
+- `base` added to Plotly Express `bar` and `bar_polar` functions
+- `plotly.express.timeline()` added as an official alternative to `plotly.figure_factories.create_gantt()`
+-  `create_hexbin_mapbox()` added to Figure Factories, with thanks to [@RenaudLN](https://github.com/RenaudLN) for the contribution!
 
 ### Fixed
 
-- Fixed special cases with `px.sunburst` and `px.treemap` with `path` input ([#2524](https://github.com/plotly/plotly.py/pull/2524))
+- trendline traces are now of type `scattergl` when `render_mode="webgl"` in Plotly Express ([#2614](https://github.com/plotly/plotly.py/pull/2614))
 
-### Added
+### Updated
+
+- Added all cartesian-2d Plotly Express functions, plus `imshow` to Pandas backend with `kind` option
+- `plotly.express.imshow` now uses data frame index and columns names and values to populate axis parameters by default ([#2539](https://github.com/plotly/plotly.py/pull/2539))
+
+
+## [4.8.2] - 2020-06-26
+
+### Updated
+
+- Updated Plotly.js to version 1.54.5. See the [plotly.js CHANGELOG](https://github.com/plotly/plotly.js/blob/v1.54.5/CHANGELOG.md) for more information.
+- `add_traces()` now accepts bare `int`-like values for `rows`/`cols` as well as lists thereof ([#2546](https://github.com/plotly/plotly.py/pull/2546)), with thanks to [@MCBoarder289](https://github.com/MCBoarder289) for the contribution!
+
+### Fixed
+
+- `row`/`col` now accept `int`-like values, not strictly `int` values ([#2451](https://github.com/plotly/plotly.py/pull/2451)), with thanks to [@MCBoarder289](https://github.com/MCBoarder289) for the contribution!
+- Fixed special cases with `px.sunburst` and `px.treemap` with `path` input ([#2524](https://github.com/plotly/plotly.py/pull/2524))
+- Fixed bug in `hover_data` argument of `px` functions, when the column name is changed with labels and `hover_data` is a dictionary setting up a specific format for the hover data ([#2544](https://github.com/plotly/plotly.py/pull/2544)).
+- Made the Plotly Express `trendline` argument more robust and made it work with datetime `x` values ([#2554](https://github.com/plotly/plotly.py/pull/2554))
+- Fixed bug in `px.sunburst` and `px.treemap`: when the `color` and `values` arguments correspond to the same column, a different aggregation function has to be used for the two arguments ([#2591](https://github.com/plotly/plotly.py/pull/2591))
+- Plotly Express wide mode now accepts mixed integer and float columns ([#2598](https://github.com/plotly/plotly.py/pull/2598))
+- Plotly Express `range_(x|y)` should not impact the unlinked range of marginal subplots ([#2600](https://github.com/plotly/plotly.py/pull/2600))
+- `px.line` now sets `line_group=<variable>` in wide mode by default ([#2599](https://github.com/plotly/plotly.py/pull/2599))
+- Corrected some regex warnings ([#2577](https://github.com/plotly/plotly.py/pull/2577)), with thanks to [@georgevdd](https://github.com/georgevdd) for the contribution!
 
-- New hexbin_mapbox trace in Plotly Express
 
 ## [4.8.1] - 2020-05-28
 

Diff for: README.md

@@ -33,7 +33,7 @@
 
 ## Quickstart
 
-`pip install plotly==4.8.1`
+`pip install plotly==4.8.2`
 
 Inside [Jupyter notebook](https://jupyter.org/install) (installable with `pip install "notebook>=5.3" "ipywidgets>=7.2"`):
 
@@ -82,13 +82,13 @@ Built on top of [plotly.js](https://github.com/plotly/plotly.js), `plotly.py` is
 plotly.py may be installed using pip...
 
 ```
-pip install plotly==4.8.1
+pip install plotly==4.8.2
 ```
 
 or conda.
 
 ```
-conda install -c plotly plotly=4.8.1
+conda install -c plotly plotly=4.8.2
 ```
 
 ### Jupyter Notebook Support
@@ -125,10 +125,10 @@ Then run the following commands to install the required JupyterLab extensions (n
 
 ```
 # Basic JupyterLab renderer support
-jupyter labextension install [email protected].1
+jupyter labextension install [email protected].2
 
 # OPTIONAL: Jupyter widgets extension for FigureWidget support
-jupyter labextension install @jupyter-widgets/jupyterlab-manager [email protected].1
+jupyter labextension install @jupyter-widgets/jupyterlab-manager [email protected].2
 ```
 
 Please check out our [Troubleshooting guide](https://plotly.com/python/troubleshooting/) if you run into any problems with JupyterLab.

Diff for: binder/requirements.txt

@@ -1,5 +1,5 @@
 jupytext
-plotly==4.8.1
+plotly==4.8.2
 jupyter
 notebook
 pandas==1.0.3

Diff for: contributing.md

@@ -64,7 +64,7 @@ the structure of the code and of the repository.
   https://github.com/plotly/plotly.py/issues/1965. If you have writing skills,
   the wording of existing examples can also be improved in places.
 
-Contributing code or documentation are not the only way to contribute! You can
+Contributing code or documentation is not the only way to contribute! You can
 also contribute to the project by
 
 - reporting bugs (see below).
@@ -151,7 +151,12 @@ complete installation and avoid gdal-config errors.
 ```
 This will ensure that the installed packages links to your local development
 directory, meaning that all changes you make reflect directly in your
-environment (don't forget to restart the Jupyter kernel though!).
+environment (don't forget to restart the Jupyter kernel though!). For more
+information see the
+[`setuptools`](https://setuptools.readthedocs.io/en/latest/setuptools.html#development-mode)
+and
+[`pip`](https://pip.pypa.io/en/stable/reference/pip_install/#install-editable)
+documentation on _development mode_.
 
 ### ipywidgets development install
 

Diff for: doc/apidoc/conf.py

@@ -28,7 +28,7 @@
 # The short X.Y version
 version = ""
 # The full version, including alpha/beta/rc tags
-release = "4.8.1"
+release = "4.8.2"
 
 
 # -- General configuration ---------------------------------------------------

Diff for: doc/apidoc/plotly.graph_objects.rst

@@ -43,6 +43,7 @@ Simple Traces
    Bar
    Pie
    Heatmap
+   Heatmapgl
    Image
    Contour
    Table

Diff for: doc/python/3d-scatter-plots.md

@@ -76,7 +76,7 @@ fig.update_layout(margin=dict(l=0, r=0, b=0, t=0))
 
 #### Basic 3D Scatter Plot
 
-If Plotly Express does not provide a good starting point, it is also possible to use the more generic `go.Scatter3D` from `plotly.graph_objs`.
+If Plotly Express does not provide a good starting point, it is also possible to use [the more generic `go.Scatter3D` class from `plotly.graph_objects`](/python/graph-objects/).
 Like the [2D scatter plot](https://plotly.com/python/line-and-scatter/) `go.Scatter`, `go.Scatter3d` plots individual data in three-dimensional space.
 
 ```python

Diff for: doc/python/animations.md

@@ -51,6 +51,12 @@ fig = px.bar(df, x="continent", y="pop", color="continent",
 fig.show()
 ```
 
+### Current Animation Limitations and Caveats
+
+* Animations are designed to work well when each row of input is present across all animation frames, and when categorical values mapped to symbol, color and facet are constant across frames. Animations *may be misleading or inconsistent* if these constraints are not met.
+* Although Plotly Express supports animation for many chart and map types, smooth inter-frame transitions are today only possible for scatter and bar
+* Plotly Express will not automatically compute the union of all x/y/color ranges, so these must be specified manually to avoid scale jumps across frames
+
 #### Animated figures with Graph Objects
 
 The remainder of this section describes the low-level API for constructing animated figures manually.

Diff for: doc/python/axes.md

@@ -29,7 +29,7 @@ jupyter:
     language: python
     layout: base
     name: Axes
-    order: 12
+    order: 13
     permalink: python/axes/
     thumbnail: thumbnail/axes.png
 ---

Diff for: doc/python/bar-charts.md

@@ -99,7 +99,7 @@ To learn more, see the _link to px.bar reference page_.
 
 #### Basic Bar Chart with plotly.graph_objects
 
-If Plotly Express does not provide a good starting point, it is also possible to use the more generic `go.Bar` function from `plotly.graph_objects`.
+If Plotly Express does not provide a good starting point, it is also possible to use [the more generic `go.Bar` class from `plotly.graph_objects`](/python/graph-objects/).
 
 ```python
 import plotly.graph_objects as go

Diff for: doc/python/box-plots.md

@@ -134,7 +134,7 @@ fig.show()
 
 ## Box plot with go.Box
 
-If Plotly Express does not provide a good starting point, it is also possible to use the more generic `go.Box` function from `plotly.graph_objects`. All available options for `go.Box` are described in the reference page https://plotly.com/python/reference/#box.
+If Plotly Express does not provide a good starting point, it is also possible to use [the more generic `go.Box` class from `plotly.graph_objects`](/python/graph-objects/). All available options for `go.Box` are described in the reference page https://plotly.com/python/reference/#box.
 
 ### Basic Box Plot
 

Diff for: doc/python/bubble-charts.md

@@ -52,7 +52,7 @@ fig.show()
 
 ## Bubble Chart with plotly.graph_objects
 
-If Plotly Express does not provide a good starting point, it is also possible to use the more generic `go.Scatter` from `plotly.graph_objects`, and define the size of markers to create a bubble chart. All of the available options are described in the scatter section of the reference page: https://plotly.com/python/reference#scatter.
+If Plotly Express does not provide a good starting point, it is also possible to use [the more generic `go.Scatter` class from `plotly.graph_objects`](/python/graph-objects/), and define the size of markers to create a bubble chart. All of the available options are described in the scatter section of the reference page: https://plotly.com/python/reference#scatter.
 
 ### Simple Bubble Chart
 

Diff for: doc/python/builtin-colorscales.md

@@ -30,7 +30,7 @@ jupyter:
     language: python
     layout: base
     name: Built-in Continuous Color Scales
-    order: 26
+    order: 27
     permalink: python/builtin-colorscales/
     thumbnail: thumbnail/heatmap_colorscale.jpg
     v4upgrade: true

Diff for: doc/python/colorscales.md

@@ -30,7 +30,7 @@ jupyter:
     language: python
     layout: base
     name: Continuous Color Scales and Color Bars
-    order: 19
+    order: 20
     permalink: python/colorscales/
     redirect_from: python/logarithmic-color-scale/
     thumbnail: thumbnail/heatmap_colorscale.jpg

Diff for: doc/python/configuration-options.md

@@ -28,7 +28,7 @@ jupyter:
     language: python
     layout: base
     name: Configuration
-    order: 8
+    order: 9
     page_type: u-guide
     permalink: python/configuration-options/
     thumbnail: thumbnail/modebar-icons.png