makeColorMatrix: makeColorMatrix

In leafgl: High-Performance 'WebGl' Rendering for Package 'leaflet'

makeColorMatrix

Description

Transform object to rgb color matrix

Usage

makeColorMatrix(x, data, palette, ...)

Arguments

x	Object representing the color. Can be of class integer, numeric, Date, POSIX*, character with color names or HEX codes, factor, matrix, data.frame, list, json or formula.
data	The dataset
palette	Name of a color palette. If colourvalues is installed, it is passed to colour_values_rgb. To see all available palettes, please use colour_palettes. If colourvalues is not installed, the palette is passed to colorNumeric.
...	Passed to colour_palettes or colorNumeric.

Examples

{
## For Integer/Numeric/Factor
makeColorMatrix(23L)
makeColorMatrix(23)
makeColorMatrix(as.factor(23))

## For POSIXt / Date
makeColorMatrix(as.POSIXlt(Sys.time(), "America/New_York"), NULL)
makeColorMatrix(Sys.time(), NULL)
makeColorMatrix(Sys.Date(), NULL)

## For matrix/data.frame
makeColorMatrix(cbind(130,1,1), NULL)
makeColorMatrix(matrix(1:99, ncol = 3, byrow = TRUE), data.frame(x=c(1:33)))
makeColorMatrix(data.frame(matrix(1:99, ncol = 3, byrow = TRUE)), data.frame(x=c(1:33)))

## For characters
testdf <- data.frame(
  texts = LETTERS[1:10],
  vals = 1:10,
  vals1 = 11:20
)
makeColorMatrix("red", testdf)
makeColorMatrix("val", testdf)

## For formulaes
makeColorMatrix(~vals, testdf)
makeColorMatrix(~vals1, testdf)

## For JSON
library(jsonify)
makeColorMatrix(jsonify::to_json(data.frame(r = 54, g = 186, b = 1)), NULL)

## For Lists
makeColorMatrix(list(1,2), data.frame(x=c(1,2)))
}

leafgl documentation built on April 4, 2025, 12:37 a.m.