Meta data: maximum number of colors and palette type

[mtennekes]

Do you have meta data of the palettes? Specifically:

• The maximum number of colors that are contained in each qualitative palette originally.
• The type of each palette.

So I'm looking for something similar as:

RColorBrewer::brewer.pal.info
#>          maxcolors category colorblind
#> BrBG            11      div       TRUE
#> PiYG            11      div       TRUE
#> PRGn            11      div       TRUE
#> PuOr            11      div       TRUE
#> RdBu            11      div       TRUE
#> RdGy            11      div      FALSE
#> RdYlBu          11      div       TRUE
#> RdYlGn          11      div      FALSE
#> Spectral        11      div      FALSE
#> Accent           8     qual      FALSE
#> Dark2            8     qual       TRUE
#> Paired          12     qual       TRUE
#> Pastel1          9     qual      FALSE
#> Pastel2          8     qual      FALSE
#> Set1             9     qual      FALSE
#> Set2             8     qual       TRUE
#> Set3            12     qual      FALSE
#> Blues            9      seq       TRUE
#> BuGn             9      seq       TRUE
#> BuPu             9      seq       TRUE
#> GnBu             9      seq       TRUE
#> Greens           9      seq       TRUE
#> Greys            9      seq       TRUE
#> Oranges          9      seq       TRUE
#> OrRd             9      seq       TRUE
#> PuBu             9      seq       TRUE
#> PuBuGn           9      seq       TRUE
#> PuRd             9      seq       TRUE
#> Purples          9      seq       TRUE
#> RdPu             9      seq       TRUE
#> Reds             9      seq       TRUE
#> YlGn             9      seq       TRUE
#> YlGnBu           9      seq       TRUE
#> YlOrBr           9      seq       TRUE
#> YlOrRd           9      seq       TRUE

^{Created on 2021-06-10 by the reprex package (v2.0.0)}

We can classify 'rainbow' palettes as sequential. The bivariate palettes (great that you have them!) are a category on their own.

(As you may know I'll use pals for tmap: see https://github.com/mtennekes/tmap/issues/566)