Simplify pdf image output. by anntzer · Pull Request #15175 · matplotlib/matplotlib · GitHub
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Simplify pdf image output. - #15175

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timhoffm merged 1 commit into
matplotlib:masterfrom
anntzer:pdfimage
Sep 12, 2019
Merged

Simplify pdf image output.#15175
timhoffm merged 1 commit into
matplotlib:masterfrom
anntzer:pdfimage

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@anntzer

@anntzer anntzer commented Sep 3, 2019

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  • Inline _unpack into its only caller writeImages.
  • Let _writeImg infer the image size and grayscaleness from the data
    shape.

preliminary work towards #15165.

PR Summary

PR Checklist

  • Has Pytest style unit tests
  • Code is Flake 8 compliant
  • New features are documented, with examples if plot related
  • Documentation is sphinx and numpydoc compliant
  • Added an entry to doc/users/next_whats_new/ if major new feature (follow instructions in README.rst there)
  • Documented in doc/api/api_changes.rst if API changed in a backward-incompatible way

tacaswell
tacaswell reviewed Sep 3, 2019
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Comment thread lib/matplotlib/backends/backend_pdf.py

@tacaswell tacaswell Sep 3, 2019

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do we ever actually pass in a grayscale image?

@anntzer anntzer Sep 3, 2019

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We do pass single-channel images (for alpha). As for actual grayscale I don't know (see #12871 for the similar thing in postscript), but this PR doesn't change that behavior anyways.

@tacaswell tacaswell added this to the v3.3.0 milestone Sep 3, 2019
@anntzer anntzer mentioned this pull request Sep 5, 2019
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@timhoffm

timhoffm commented Sep 9, 2019

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What is the benefit of inlining? To me this looks more cluttered now. The original _unpack seemed like a reasonable abstraction layer.

@anntzer

anntzer commented Sep 9, 2019

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For me this made #15193 easier to write (even though strictly speaking it is orthogonal) -- as things stand it is a bit annoying to have to go through multiple places to track the shapes of the arrays involved.
Although I guess strictly speaking I could do without the inlining of _unpack, and just get rid of width, height and greyscale as arguments to _writeImg.

@timhoffm

timhoffm commented Sep 9, 2019

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I would be happier with that 😃.

@anntzer

anntzer commented Sep 9, 2019

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QuLogic
QuLogic approved these changes Sep 11, 2019
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Comment thread lib/matplotlib/backends/backend_pdf.py Outdated
@anntzer
Simplify pdf image output.
2a63d63 
Let _writeImg infer image size and grayscaleness from the data itself.
@timhoffm
timhoffm merged commit 56cfb43 into matplotlib:master Sep 12, 2019
@anntzer
anntzer deleted the pdfimage branch September 12, 2019 07:00
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@tacaswell tacaswell tacaswell left review comments
@QuLogic QuLogic QuLogic approved these changes
@timhoffm timhoffm timhoffm approved these changes

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@anntzer @timhoffm @tacaswell @QuLogic