Add color-hex color scales

[bwiernik]

No description provided.

[codecov-commenter]

Codecov Report

Merging #245 (2321e4d) into main (ce242a8) will increase coverage by 0.00%.
The diff coverage is 43.24%.

@@           Coverage Diff           @@
##             main     #245   +/-   ##
=======================================
  Coverage   42.91%   42.91%           
=======================================
  Files          63       64    +1     
  Lines        4136     4173   +37     
=======================================
+ Hits         1775     1791   +16     
- Misses       2361     2382   +21     

Impacted Files	Coverage Δ
R/scale_color_colorhex.R	43.24% <43.24%> (ø)

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.

[bwiernik]

@IndrajeetPatil could you help me write a test that won't make CRAN angry with failing URLs?

Use palette = 185 as the input and c("#3b5998", "#8b9dc3", "#dfe3ee", "#f7f7f7", "#ffffff") as the expected result

[IndrajeetPatil]

The example still doesn't seem to work:

library(ggplot2)
library(see)

ggplot(iris, aes(x = Species, y = Sepal.Length, fill = Species)) +
  geom_violin() +
  theme_modern() +
  scale_fill_colorhex_d(palette = 1014416)
#> Error in self$palette(n): attempt to apply non-function

^{Created on 2022-09-30 with reprex v2.0.2}

[IndrajeetPatil]

@bwiernik Awaiting your response on this one.

[bwiernik]

ah, lovely bugs/poor programming in ggplot2::scale_color_gradientn()!

[IndrajeetPatil]

Thanks for fixing! Will add the tests now.