ENH: Add support for tablewise application of style.background_gradient with axis=None #21259

soxofaan · 2018-05-30T15:58:02Z

closes ENH: Allow elementwise coloring in background_gradient with axis=None #15204
tests added / passed
passes git diff upstream/master -u -- "*.py" | flake8 --diff
whatsnew entry

pep8speaks · 2018-05-30T15:58:05Z

Hello @soxofaan! Thanks for updating the PR.

Cheers ! There are no PEP8 issues in this Pull Request. 🍻

Comment last updated on July 11, 2018 at 15:48 Hours UTC

jschendel · 2018-05-30T17:07:40Z

pandas/io/formats/style.py

@@ -901,16 +901,21 @@ def background_gradient(self, cmap='PuBu', low=0, high=0, axis=0,
    def _background_gradient(s, cmap='PuBu', low=0, high=0):
        """Color background in a range according to the data."""
        with _mpl(Styler.background_gradient) as (plt, colors):
-            rng = s.max() - s.min()
+            min = s.values.min()
+            max = s.values.max()


Can you use different names for min/max so they don't override the built-in min/max functions?

sure, updated commit

codecov · 2018-05-30T21:11:49Z

Codecov Report

Merging #21259 into master will increase coverage by <.01%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master   #21259      +/-   ##
==========================================
+ Coverage   91.92%   91.92%   +<.01%     
==========================================
  Files         160      160              
  Lines       49906    49910       +4     
==========================================
+ Hits        45875    45879       +4     
  Misses       4031     4031

Flag	Coverage Δ
#multiple	`90.3% <100%> (ø)`	⬆️
#single	`42.1% <0%> (-0.01%)`	⬇️

Impacted Files	Coverage Δ
pandas/io/formats/style.py	`96.16% <100%> (+0.03%)`	⬆️

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soxofaan · 2018-05-31T08:26:29Z

@jschendel I updated the commit per your request

the failing tests/checks are not related to the change as far as I understand, is there something I should do about that?

jreback · 2018-05-31T10:09:59Z

you have linting issues:

pandas/tests/io/formats/test_style.py:1066:1: E303 too many blank lines (3)

jreback · 2018-05-31T10:10:31Z

is it worth adding the OP example here?

soxofaan · 2018-05-31T12:56:48Z

@jreback thanks, I didn't catch that linting issue warning. Lot of trees in the forest.

I think the OP example is good for interactive testing, but overkill for unit testing

soxofaan · 2018-05-31T17:28:27Z

(this PR will conflict with #21263 )

soxofaan · 2018-06-07T19:15:15Z

Had to rework this PR because #21263 has been merged

note that making background_gradient compatible with axis=None enabled to simplify the relative_luminance implementation of #21263

soxofaan · 2018-06-07T19:18:54Z

Illustration:

jreback

minor comments. lgtm.

jreback · 2018-06-19T00:59:16Z

doc/source/whatsnew/v0.24.0.txt

@@ -16,7 +16,9 @@ Other Enhancements
 - :func:`Series.mode` and :func:`DataFrame.mode` now support the ``dropna`` parameter which can be used to specify whether NaN/NaT values should be considered (:issue:`17534`)
 - :func:`to_csv` now supports ``compression`` keyword when a file handle is passed. (:issue:`21227`)
 - :meth:`Index.droplevel` is now implemented also for flat indexes, for compatibility with MultiIndex (:issue:`21115`)
-
+- Allow elementwise coloring in ``style.background_gradient`` with ``axis=None`` (:issue:`15204`)


use :class:`pandas.io.formats.style.Styler`

or even better, I'll move it alongside with the changelog entry for PR #21263

soxofaan · 2018-06-20T07:54:47Z

continuous-integration/travis-ci/pr failure is due to

CondaHTTPError: HTTP 502 BAD GATEWAY for url <https://conda.anaconda.org/conda-forge/linux-64/repodata.json>

soxofaan · 2018-06-20T08:38:48Z

😕 now continuous-integration/travis-ci/pr failure is due to

$ curl -sSf -o python-3.5.tar.bz2 ${archive_url}
curl: (35) Unknown SSL protocol error in connection to s3.amazonaws.com:443 
Unable to download 3.5 archive. The archive may not exist. Please consider a different version.

…nt with axis=None pandas-dev#15204

soxofaan · 2018-07-11T15:48:25Z

(rebased on latest master)

TomAugspurger · 2018-07-12T12:38:39Z

Thanks!

…v#21259)

soxofaan force-pushed the issue-15204-background-axix-none branch 3 times, most recently from 060fd66 to b1dfa6c Compare May 30, 2018 16:06

jschendel reviewed May 30, 2018

View reviewed changes

jschendel added Enhancement Output-Formatting __repr__ of pandas objects, to_string labels May 30, 2018

jschendel added this to the 0.24.0 milestone May 30, 2018

soxofaan force-pushed the issue-15204-background-axix-none branch from b1dfa6c to e376312 Compare May 30, 2018 21:11

soxofaan force-pushed the issue-15204-background-axix-none branch from e376312 to e6f7758 Compare May 31, 2018 00:07

soxofaan mentioned this pull request May 31, 2018

Use light text color on dark colors in style.background_gradient #21269

Closed

soxofaan force-pushed the issue-15204-background-axix-none branch from e6f7758 to 5c05bf1 Compare May 31, 2018 12:55

soxofaan force-pushed the issue-15204-background-axix-none branch from 5c05bf1 to 23a4bfb Compare May 31, 2018 17:00

soxofaan force-pushed the issue-15204-background-axix-none branch from 23a4bfb to 0f2b688 Compare June 7, 2018 19:12

soxofaan mentioned this pull request Jun 7, 2018

Color text based on background color when using _background_gradient() #21263

Merged

4 tasks

soxofaan force-pushed the issue-15204-background-axix-none branch from 0f2b688 to 5322f25 Compare June 8, 2018 07:14

jreback approved these changes Jun 19, 2018

View reviewed changes

soxofaan force-pushed the issue-15204-background-axix-none branch from 5322f25 to f044cf7 Compare June 19, 2018 17:38

soxofaan mentioned this pull request Jun 20, 2018

style.bar: add support for axis=None (tablewise application instead of rowwise or columnwise) #21548

Merged

4 tasks

soxofaan force-pushed the issue-15204-background-axix-none branch from f044cf7 to d615e90 Compare June 20, 2018 07:59

TomAugspurger approved these changes Jun 20, 2018

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soxofaan mentioned this pull request Jun 20, 2018

background_gradient vmin and vmax #12145

Closed

soxofaan changed the title ~~ENH: Allow elementwise coloring in background_gradient with axis=None~~ ENH: Add support for tablewise application of style.background_gradient with axis=None Jun 24, 2018

ENH: Add support for tablewise application of style.background_gradie…

c39f420

…nt with axis=None pandas-dev#15204

soxofaan force-pushed the issue-15204-background-axix-none branch from d615e90 to c39f420 Compare July 11, 2018 15:47

TomAugspurger merged commit bdb6168 into pandas-dev:master Jul 12, 2018

Sup3rGeo pushed a commit to Sup3rGeo/pandas that referenced this pull request Oct 1, 2018

ENH: tablewise Styler.background_gradient pandas-dev#15204 (pandas-de…

3393765

…v#21259)

joelostblom mentioned this pull request Mar 5, 2019

Document the behavior of axis=None with style.background_gradient #25551

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ENH: Add support for tablewise application of style.background_gradient with axis=None #21259

ENH: Add support for tablewise application of style.background_gradient with axis=None #21259

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ENH: Add support for tablewise application of style.background_gradient with axis=None #21259

ENH: Add support for tablewise application of style.background_gradient with axis=None #21259

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