kwstat/pals

Color Palettes and Palette Evaluation Tools

pals's Issues

Meta data: maximum number of colors and palette type

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)

Move rgl to Suggests

Please consider moving the rgl package from Imports to Suggests and requireing it in the places where it is used.

On macOS, loading rgl starts X11, this is not needed at all for most common uses of pals.

Thanks for a very useful package!

bivariate palettes: flexible n

Hi, a feature request:

The bivariate palettes have a fixed n. It would be great to be able to set this, preferably for the number of rows and columns.
E.g. arc.bluepink(n = 4, m = 5) should create a palette of 4 x 5 colors.

I think it is easy to implement using colorRampPalette, first in one dimension, then in the other dimension.

How to implement a pals palette in ggplot2 (categorical)

Hi;
I ran into your package and it looks like it has some features that I can use for some of my graphics. I need to include multiple colors on a graphic created with discrete data. How can I use one of your palettes inside the ggplot call? Consider the code below:
ggplot(mtcars) +
geom_bar(aes(factor(hp), fill=factor(hp))) +
scale_fill_brewer(palette="polychrome")
I would like to use either polychrome, Kelly or stepped.
I saw your example with continuous data here: https://cran.r-project.org/web/packages/pals/vignettes/pals_examples.html
but my example is with categorical data. Is it possible to use your palettes here?

How to use the pals for my scatter plot?

I am trying to uniquely label the datapoints from 22 samples in a scatter plot. I seek your help that how I can do this using pals package in R. Like in my scatter plot function's argument cols = "what" ......???

50 distinctive colors by combining two combining two discrete palettes

Hi,

I need to create 50 visually distinctive colors and to do this, I did following;

cols<-c(polychrome(25), alphabet2(25))

But there are still multiple colors that are substantially similar. I'd really appreciate if you could suggest a better approach ?

Thanks.

tol palettes

Hi,

I see a whole series of "tol" palettes in `pals:::syspals:

names(pals:::syspals)[substr(names(pals:::syspals), 1, 3) == "tol"]
 [1] "tol"               "tol.bright"        "tol.highcontrast"  "tol.vibrant"       "tol.muted"         "tol.dark"          "tol.light"        
 [8] "tol.sunset"        "tol.burd"          "tol.prgn"          "tol.ylorbr"        "tol.iridescent"    "tol.smoothrainbow"

but there are no functions to retrieve them (except for "tol", "tol.groundcover", and "tol.rainbow"). Can you also export the others too?
.

Add colors for bivariate sequential-sequential choropleths

For example:
http://www.joshuastevens.net/cartography/make-a-bivariate-choropleth-map/

Value-Suppressing Uncertainty Palettes

Maybe the Value-Suppressing Uncertainty Palettes could be a worthwhile addition (Github Repo).

As far as i understood (I am not related to the UW Interactive Data Lab), the Uncertainty Palette is kind of an enhanced bivariate palette for the use case of communicating uncertainty along with a value. Should be great for mapping (in the meaning of cartography) of statistics.

pal.cube(cubehelix) error

Hi

pal.cube(cubehelix)
Error in loadNamespace(x) : there is no package called ‘rgl’

so

install.packages("rgl")
require(rgl)

and run

pal.cube(cubehelix)

again. It works now.