Color palettes extracted from the Albums de Statistique Graphique produced under the direction of Émile Cheysson. These palettes are organized by album year and plate number.
Format
A list of 20 color palettes, each containing:
- colors
Character vector of hex color codes
- type
Palette type: "sequential", "diverging", "grouped", or "category"
- album
Year of the album
- plate
Plate number within the album
- rumsey_no
David Rumsey collection reference number
- dec_day
Advent calendar day from original source
Source
Color patterns digitized by RJ Andrews from the David Rumsey Map Collection https://github.com/infowetrust/albumcolors
Observable implementation by Tom Shanley https://observablehq.com/@tomshanley/cheysson-color-palettes
Details
The palettes are named using the convention YYYY_PP where YYYY is the
album year and PP is the zero-padded plate number. For example, "1880_07"
refers to plate 7 from the 1880 album.
Palette types:
Sequential (7 palettes): Ordered colors for quantitative data
Diverging (2 palettes): Two contrasting colors with neutral midpoint
Grouped (5 palettes): Related colors for comparing groups
Category (6 palettes): Distinct colors for categorical data
Examples
# List available palettes
names(cheysson_palettes)
#> [1] "1880_07" "1881_03" "1881_04" "1881_08" "1882_04" "1883_04" "1883_06"
#> [8] "1883_07" "1886_04" "1886_07" "1886_08" "1887_06" "1888_05" "1891_03"
#> [15] "1891_06" "1891_07" "1895_04" "1900_06" "1906_04" "1906_06"
# Get colors from a specific palette
cheysson_palettes$`1880_07`$colors
#> [1] "#d9636c" "#869e80" "#dec367" "#85aab1" "#aea9a4" "#ed8238" "#ab90a4"
# Find palettes by type
sequential_pals <- Filter(function(x) x$type == "sequential", cheysson_palettes)
names(sequential_pals)
#> [1] "1881_03" "1886_04" "1888_05" "1891_06" "1891_07" "1895_04" "1900_06"