Return sequence of hex color codes between two diverging colors

Useful to visualize ordered categorical data, for example regions on a map. The function takes two hex color codes and returns a color sequence of the desired length where these colors gradually fade into one another. This could be a transition from a light to a dark shade, or one color to a different color, see examples. Uses pal_seq_gradient() from the scales package under the hood.

To access the hex color code of a specific color, use the the ROvis function ro_color.

Usage

ro_color_seq(low, high, n)

Arguments

low

Character. The hexadecimal code (#RRGGBB) of the color for 'low' values. This color will be the first hex code of the sequence.

high

Character. The hexadecimal code (#RRGGBB) of the color for 'high' values. This color will be the last hex code of the sequence.

n

Integer. Desired amount of colors in the sequence (including the specified colors).

Value

sequence of hex color codes sorted from the 'low' to the 'high' color.

See also

Other ggplotly: ro_check_if_font_available(), ro_color(), ro_color_categorical(), ro_color_palette(), ro_color_seq_named(), ro_get_color_palette()

Other plotly: ro_check_if_font_available(), ro_color(), ro_color_categorical(), ro_color_palette(), ro_color_seq_named(), ro_get_color_palette()

Other echarts4r: ro_check_if_font_available(), ro_color(), ro_color_categorical(), ro_color_seq_named()

Other ggplot2: get_color_palette(), ro_check_if_font_available(), ro_color(), ro_color_categorical(), ro_color_palette(), ro_color_seq_named(), ro_color_validate(), ro_get_color_palette(), ro_gg_create_palette(), ro_show_colors(), ro_show_colors_get_df()

Examples

ro_color_seq("#F7D9E7", "#CA005D", 5)
#> [1] "#F7D9E7" "#F1AFC2" "#E7839F" "#DA547D" "#CA005D"
ro_color_seq(ro_color("robijnrood_tint15"), ro_color("robijnrood"), 7)
#> [1] "#F7D9E7" "#F3BDCE" "#EEA0B6" "#E7839F" "#DF6588" "#D54272" "#CA005D"
ro_color_seq(ro_color("hemelblauw_tint30"), ro_color("hemelblauw"), 4)
#> [1] "#B2D7EE" "#89B7E1" "#5B98D4" "#007BC7"
ro_color_seq(ro_color("hemelblauw"), ro_color("robijnrood"), 8)
#> [1] "#007BC7" "#5772B7" "#7869A7" "#8F5E98" "#A15189" "#B1427A" "#BE2E6B"
#> [8] "#CA005D"