Fix `set_zero_in_cmap_to_transparent` with datashader rendering#577

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fix/issue-376-transparent-cmap-datashader

Apr 5, 2026

Commits on Apr 4, 2026

Fix set_zero_in_cmap_to_transparent not working with datashader (#376)

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Add visual tests for transparent cmap with shapes rendering

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Update baselines with CI-generated images

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Make visual tests two-panel: baseline viridis vs transparent cmap

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Update baselines with CI-generated two-panel images

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Fix span auto-scaling after NaN masking

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Replace NaN-masking with RGBA post-processing for cmap alpha

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Update baselines with CI-generated images

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Add visual tests for points and clip=False norm paths

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Commits on Apr 5, 2026

Remove broken points visual test, update baselines

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