| Title: | 270 'NCL' Color Tables in R Language |
| Description: | 'NCL' (NCAR Command Language) is one of the most popular spatial data mapping tools in meteorology studies, due to its beautiful output figures with plenty of color palettes designed by experts https://www.ncl.ucar.edu/index.shtml. Here we translate all 'NCL' color palettes into R hexadecimal RGB colors and provide color selection function, which will help users make a beautiful figure. |
| Version: | 0.1.0 |
| Depends: | R (≥ 3.1) |
| Imports: | magrittr |
| License: | GPL-3 |
| Encoding: | UTF-8 |
| LazyData: | true |
| RoxygenNote: | 7.1.1 |
| Suggests: | testthat, covr |
| NeedsCompilation: | no |
| Packaged: | 2021-04-22 12:13:18 UTC; kongdd |
| Author: | Dongdong Kong 
[aut, cre] |
| Maintainer: | Dongdong Kong <kongdd.sysu@gmail.com> |
| Repository: | CRAN |
| Date/Publication: | 2021-04-23 10:40:02 UTC |
rcolors: 270 'NCL' Color Tables in R Language
Description
'NCL' (NCAR Command Language) is one of the most popular spatial data mapping tools in meteorology studies, due to its beautiful output figures with plenty of color palettes designed by experts <https://www.ncl.ucar.edu/index.shtml>. Here we translate all 'NCL' color palettes into R hexadecimal RGB colors and provide color selection function, which will help users make a beautiful figure.
Author(s)
Maintainer: Dongdong Kong kongdd.sysu@gmail.com (ORCID)
270 ncl colors
Description
-rcolors: list of 270 colors
-
colors_group: list of grouped colors
Usage
colors_group
Format
An object of class list of length 34.
References
https://www.ncl.ucar.edu/Document/Graphics/color_table_gallery.shtml
Examples
str(rcolors[1:6])
str(colors_group[1:6])
Get and interpolate colors
Description
Get and interpolate colors
Usage
get_color(col, n = NULL, show = FALSE)
Arguments
col |
color name in the |
n |
Integer, default is length of |
show |
Boolean, whether to visualize those colors? |
Details
supported col names: 270 ncl colors (names(rcolors)) and 35
RColorBrewer colors (names(colors_group$brewer)).
Value
A character vector with elements of 7 or 9 characters, "#"
followed by the red, blue, green and optionally alpha values in
hexadecimal (after rescaling to 0 ... 255). The optional alpha
values range from 0 (fully transparent) to 255 (opaque).
R does not use ‘premultiplied alpha’.
See Also
Examples
print(names(rcolors[1:6]))
print(names(colors_group$brewer))
get_color("amwg_blueyellowred", n = 20)
read colors from ncl
Description
read colors from ncl
Usage
read_color(file)
Arguments
file |
ncl rgb file |
Value
A character vector with elements of 7 or 9 characters, "#"
followed by the red, blue, green and optionally alpha values in
hexadecimal (after rescaling to 0 ... 255). The optional alpha
values range from 0 (fully transparent) to 255 (opaque).
R does not use ‘premultiplied alpha’.
Show list of colors
Description
Show list of colors
-
show_cols: show list of colors -
show_cols_brewer: show list of colors in RColorBrewer style
Usage
show_cols(colors_list, margin = 8, fontsize = 1, family = NULL)
show_cols_brewer(colors_list)
show_col(colors, labels = TRUE, borders = NULL, cex_label = 1, nrow = NULL)
Arguments
colors_list |
A list objects filled with colors_list or a color vector |
margin |
margin in the left |
family, fontsize |
font family and size of color names in the left |
colors |
a character vector of colors |
labels |
boolean, whether to show the hexadecimal representation of the colours in each tile |
borders |
colour of the borders of the tiles |
cex_label |
size of printed labels, works the same as cex parameter of |
nrow |
integer, number of rows |
Examples
print(names(colors_group))
show_cols(colors_group$rainbow, margin = 14)