Best practices for programming with ggplot2
summary
Reverse dependency checks find ~1,500 packages that import ggplot2 and >2,500 that suggest it, so concrete patterns matter: use the dot_data pronoun to let aes and facet specs accept string inputs; build the mapping and facet objects at the top so they can be conditionally removed; add NULL to a plot to mean “do nothing” instead of creating separate plot branches; import ggplot2 functions in the NAMESPACE to avoid ggplot2:: clutter; test images with vdiffr and expect_doppelganger after making a deterministic data generator.
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chapters (4)
- 0:00Start
- 12:15Using ggplot2 in packages: namespacing
- 13:41Using ggplot2 in packages: undefined variables
- 15:03Using ggplot2 in packages: testing
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