Create a matrix from vector to represent colors in gradient
Create a matrix from vector to represent colors in gradient
gradient(x, min.color, max.color, alpha = NULL, use.names = TRUE, na.rm = TRUE)
x |
a numeric vector. |
min.color |
color of minimum value. |
max.color |
color of maximum value. |
alpha |
logical of whether to include alpha channel. |
use.names |
logical of whether to preserve names of input vector. |
na.rm |
logical indicating whether to ignore missing values as |
a matrix with rgba columns in which each row corresponds to the rgba
value (0-255) of each element in input vector x. Use csscolor
to convert the matrix to css color strings compatible with web browsers.
gradient(c(1,2,3,4,5), "white", "red") gradient(c(5,4,3,2,1), "white", "red") gradient(c(1,3,2,4,5), "white", "red") gradient(c(1,3,2,4,5), rgb(0,0,0,0.5), rgb(0,0,0,1), alpha = TRUE)
Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.