• Kyle Sunden

Project Length	Intensity	Category	Involves
175 hours	Low	Fun/Peripheral	Implementing support colormaps with two inputs

Sometimes there are additional pieces of information that we would like to be able to represent in plots.

In particular, this may include representing the phase and magnitude of an image with complex (a + bi) values (or any other similar pair of numbers).

Related Issues/Prs: #4369, #8738, #14168, #18809

• Python programming

• An implementation of a colormap which uses two values (or one complex value) to determine the output color.
• This may take the form of an external library (especially in the initial stages) rather than being fully incorporated into matplotlib directly.

Project Length	Intensity	Category	Involves
350 hours	Moderate	Infrastructure	Development workflow improvements relating to test data (images)

The test images represent a large portion of the Matplotlib git repository (and especially make updating the images challenging/have increased long term cost, resulting in additional development effort being spent)

Related Issues/Prs: #5329, #16447, #11732, #17434, #17557

• Python programming

• An improved workflow for managing the test data infastructure/reducing repository growth due to image
• Updates to developer documentation reflecting the changes
• Updates to CI infrastructure reflecting the changes

Project Length	Intensity	Category	Involves
350 hours	Moderate	Fun/Peripheral	Implementing support for custom Hatch patterns

Hatching adds patterns on top of patches used in Matplotlib Artists. These hatch patterns make things like bar graphs differentiable even when represented in Black and White or for colorblind readers.

Some fields additionally have standardized hatch patterns which are not available in Matplotlib by default.

Extending the current hatch patterns to allow registering custom hatch patterns would benefit users in such fields.

Related Issues/Prs: topic: hatch, particularly #20690, #20029

• Python programming

• A system for registering custom hatch patterns
• An implementation (perhaps as an separate python package) of some domain specific hatch patterns

Project Length	Intensity	Category	Involves
350 hours	Moderate	Core development	Fixing bugs with Matplotlib's support for MathTeX

Representing text, and in particular mathematical expressions using LaTeX, are key parts of Matplotlib. This project is less about a single major contribution and more about smaller contributions which add up to much better support for MathTeX overall.

• Python programming
• LaTeX math mode expressions

• Reduction in number of open issues(/PRs) relating to MathTeX

Related Issues/Prs: topic: text/mathtex