Implement Figure.pygmtlogo for the PyGMT logo by seisman · Pull Request #4616 · GenericMappingTools/pygmt

seisman · 2026-05-02T08:27:45Z

This PR tracks the implementation of the PyGMT logos in different versions.

Logo implementation status

Variant	Colored + Light	Colored + Dark	Grayscale + Light	Grayscale + Dark
Circular, no wordmark	✅	✅	✅	✅
Circular, horizontal wordmark	✅	✅	✅	✅
Circular, vertical wordmark	✅	✅	✅	✅
Hexagon, no wordmark	✅	✅	✅	✅
Hexagon, horizontal wordmark	✅	✅	✅	✅
Hexagon, vertical wordmark	✅	✅	✅	✅

Related PRs and issues

Hexagon shape

Pro

Seems to be quite popular (even for Python)

Contra

lost of context / connection to Earth and compass
difficult of implement based on fractions rather than on empircal factors
difficult to make to logo conistent across both shapes
12 variants already for circle shape (color/bw, no/hor./vert. wordmark, light/dark), multiple tests with baseline images
longer code, difficult to maintain

Some important comments from #3849

hexagon shape: support or drop
Figure.pygmtlogo: Initial version for the circular, colored PyGMT logo #3849 (comment)
- outer endings of main compass lines -> coverage by other shape
- arrow length of letter T
- same figure size across shapes
- position of wordmark, distance to visual
examples: no projection and region parameters
- inline: Figure.pygmtlogo: Initial version for the circular, colored PyGMT logo #3849 (comment)
- gallery: separate PR
wordmark: consistency with GMT
radii: fractions
- integer: Figure.pygmtlogo: Initial version for the circular, colored PyGMT logo #3849 (comment)
- 128: Figure.pygmtlogo: Initial version for the circular, colored PyGMT logo #3849 (comment)
docstrings: support width and height parameters
- Figure.pygmtlogo: Initial version for the circular, colored PyGMT logo #3849 (review)

Known issues

After plotting the logo, -X+w is expected to shift the plotting origin in the x-direction by logo width, but it actually shifts more than that. It's likely an issue with the image module.

…GMT logo (#3849) Co-authored-by: Dongdong Tian <seisman.info@gmail.com> Co-authored-by: Michael Grund <23025878+michaelgrund@users.noreply.github.com> Co-authored-by: Wei Ji <23487320+weiji14@users.noreply.github.com>

github-actions · 2026-05-02T08:29:36Z

Summary of changed images

This is an auto-generated report of images that have changed on the DVC remote

Status	Path
added	pygmt/tests/baseline/test_pygmtlogo_design_circle-horizontal.png
added	pygmt/tests/baseline/test_pygmtlogo_design_circle-vertical.png
added	pygmt/tests/baseline/test_pygmtlogo_design_hexagon-horizontal.png
added	pygmt/tests/baseline/test_pygmtlogo_design_hexagon-vertical.png
added	pygmt/tests/baseline/test_pygmtlogo_wordmark_horizontal_circle.png
added	pygmt/tests/baseline/test_pygmtlogo_wordmark_horizontal_hexagon.png
added	pygmt/tests/baseline/test_pygmtlogo_wordmark_none_circle.png
added	pygmt/tests/baseline/test_pygmtlogo_wordmark_none_hexagon.png
added	pygmt/tests/baseline/test_pygmtlogo_wordmark_vertical_circle.png
added	pygmt/tests/baseline/test_pygmtlogo_wordmark_vertical_hexagon.png

Image diff(s)

Details

Added images

test_pygmtlogo_design_circle-horizontal.png

test_pygmtlogo_design_circle-vertical.png

test_pygmtlogo_design_hexagon-horizontal.png

test_pygmtlogo_design_hexagon-vertical.png

test_pygmtlogo_wordmark_horizontal_circle.png

test_pygmtlogo_wordmark_horizontal_hexagon.png

test_pygmtlogo_wordmark_none_circle.png

test_pygmtlogo_wordmark_none_hexagon.png

test_pygmtlogo_wordmark_vertical_circle.png

test_pygmtlogo_wordmark_vertical_hexagon.png

Modified images

Path	Old	New

Report last updated at commit 5a11ae0

…_pygmtlogo_circle_no_wordmark (#4617) Co-authored-by: Yvonne Fröhlich <94163266+yvonnefroehlich@users.noreply.github.com>

…4625)

…for readability (#4630)

…rrow (#4635)

…4634) Co-authored-by: Yvonne Fröhlich <94163266+yvonnefroehlich@users.noreply.github.com>

…nd-white dark-theme logo (#4638)

…cular PyGMT logo (#4627)

…ar PyGMT logo (#4637)

yvonnefroehlich · 2026-06-18T10:43:45Z

Unfortunately I needed more time to catch up with things after being back from the workshop as expected - but now finally back at the PyGMT logo. From roughly going through the changes made in the mean time, things look really good.

Two aspects for now:

(i) The color of the wordmark for the colored version, as mentioned in #4627 (comment):

pygmt_logo_wordmark_fontcolor_gmt_in_red

(ii) After removing the inner compass lines, the horizontal line of the letter G does not start anymore at the left side of letter M (sorry for the confusing description; hope the image make it clear):

yvonnefroehlich · 2026-06-18T14:39:37Z

+        "light": (color_light, blue, color_dark),
+        "dark": (color_dark, yellow, color_light),


Suggested change

"light": (color_light, blue, color_dark),

"dark": (color_dark, yellow, color_light),

"light": (color_light, blue, color_red),

"dark": (color_dark, yellow, color_red),

For the color choices, I feel the old version is better, because the GMT-red color makes the text “GMT” too visually heavy and eye-catching, drawing attention away from the logo symbol.

seisman added this to the 0.19.0 milestone May 2, 2026

seisman added the feature Brand new feature label May 2, 2026

seisman temporarily deployed to pr-tests May 2, 2026 08:27 — with GitHub Actions Inactive

seisman temporarily deployed to pr-tests May 2, 2026 12:49 — with GitHub Actions Inactive

seisman force-pushed the pygmtlogo branch from f8d51b4 to 4868c8a Compare May 2, 2026 12:50

seisman temporarily deployed to pr-tests May 2, 2026 12:50 — with GitHub Actions Inactive

seisman mentioned this pull request May 2, 2026

Figure.pygmtlogo: Force the default logo size to 2-cm and rename test_pygmtlogo to test_pygmtlogo_circle_no_wordmark #4617

Merged

Force the default logo size to 2-cm and rename test_pygmtlogo to test…

bd24b5a

…_pygmtlogo_circle_no_wordmark (#4617) Co-authored-by: Yvonne Fröhlich <94163266+yvonnefroehlich@users.noreply.github.com>

seisman temporarily deployed to pr-tests May 6, 2026 11:16 — with GitHub Actions Inactive

Merge branch 'main' into pygmtlogo

0ce57a1

seisman temporarily deployed to pr-tests May 6, 2026 17:02 — with GitHub Actions Inactive

Add a test to check the design details of the circular logo (#4623)

091d62c

seisman temporarily deployed to pr-tests May 7, 2026 07:54 — with GitHub Actions Inactive

Figure.pygmtlogo: Add tests for the circular, black/white PyGMT logo (#…

c63767f

…4625)

seisman temporarily deployed to pr-tests May 7, 2026 22:39 — with GitHub Actions Inactive

Merge branch 'main' into pygmtlogo

9a91164

seisman temporarily deployed to pr-tests May 8, 2026 02:13 — with GitHub Actions Inactive

Figure.pygmtlogo: Simplify the code logic for defining colors (#4629)

21cb57a

seisman temporarily deployed to pr-tests May 9, 2026 10:02 — with GitHub Actions Inactive

Figure.pygmtlogo: Explicitly set the angle of diagonal compass lines …

7581ebf

…for readability (#4630)

seisman temporarily deployed to pr-tests May 9, 2026 13:27 — with GitHub Actions Inactive

Figure.pygmtlogo: Increase the gap around the vertical red line and a…

5c7d482

…rrow (#4635)

seisman temporarily deployed to pr-tests May 11, 2026 10:24 — with GitHub Actions Inactive

Figure.pygmtlogo: Set the region based on wordmark for easier design (#…

71f66dd

…4634) Co-authored-by: Yvonne Fröhlich <94163266+yvonnefroehlich@users.noreply.github.com>

seisman temporarily deployed to pr-tests May 12, 2026 13:36 — with GitHub Actions Inactive

Figure.pygmtlogo: Remove the additional black outline for the black-a…

1ea6e8e

…nd-white dark-theme logo (#4638)

seisman temporarily deployed to pr-tests May 13, 2026 23:14 — with GitHub Actions Inactive

Figure.pygmtlogo: Parameterize existing tests (#4639)

4f09ba6

Merge branch 'main' into pygmtlogo

c4792ca

seisman temporarily deployed to pr-tests June 6, 2026 06:24 — with GitHub Actions Inactive

Merge branch 'main' into pygmtlogo

40fb536

seisman temporarily deployed to pr-tests June 8, 2026 06:42 — with GitHub Actions Inactive

Figure.pygmtlogo: Improved positioning of horizontal wordmark for cir…

b7e1985

…cular PyGMT logo (#4627)

seisman temporarily deployed to pr-tests June 10, 2026 09:13 — with GitHub Actions Inactive

Merge branch 'main' into pygmtlogo

4067d55

seisman temporarily deployed to pr-tests June 12, 2026 12:07 — with GitHub Actions Inactive

Figure.pygmtlogo: Improve positioning of vertical wordmark for circul…

ce7a3c4

…ar PyGMT logo (#4637)

seisman temporarily deployed to pr-tests June 16, 2026 02:40 — with GitHub Actions Inactive

Merge branch 'main' into pygmtlogo

ee4f3d2

seisman temporarily deployed to pr-tests June 16, 2026 02:41 — with GitHub Actions Inactive

Figure.pygmtlogo: Improve the design of the hexagonal logo (#4631)

a7e4f75

seisman temporarily deployed to pr-tests June 18, 2026 01:07 — with GitHub Actions Inactive

seisman added the needs review This PR has higher priority and needs review. label Jun 18, 2026

Merge branch 'main' into pygmtlogo

17ebe7c

seisman marked this pull request as ready for review June 18, 2026 01:08

seisman temporarily deployed to pr-tests June 18, 2026 01:08 — with GitHub Actions Inactive

Slightly increase the y-range for test_pygmtlogo_workdmark_vertical

d3d6e9f

seisman had a problem deploying to pr-tests June 18, 2026 03:26 — with GitHub Actions Failure

yvonnefroehlich reviewed Jun 18, 2026

View reviewed changes

Comment thread pygmt/src/pygmtlogo.py Outdated

Slightly adjust the letter G

d748268

seisman had a problem deploying to pr-tests June 18, 2026 12:09 — with GitHub Actions Error

yvonnefroehlich reviewed Jun 18, 2026

View reviewed changes

seisman had a problem deploying to pr-tests June 18, 2026 14:57 — with GitHub Actions Failure

Update baseline images

49def96

seisman temporarily deployed to pr-tests June 18, 2026 15:14 — with GitHub Actions Inactive

Merge branch 'main' into pygmtlogo

5a11ae0

seisman temporarily deployed to pr-tests June 20, 2026 03:40 — with GitHub Actions Inactive

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Implement Figure.pygmtlogo for the PyGMT logo#4616

Implement Figure.pygmtlogo for the PyGMT logo#4616
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		"light": (color_light, blue, color_dark),
		"dark": (color_dark, yellow, color_light),

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Logo implementation status

Related PRs and issues

Hexagon shape

Some important comments from #3849

Known issues

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seisman commented May 2, 2026 •

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