Hi,
I wonder whether there is a way to generate a polygon (a triangle in
my case) with color gradient using grid.polygon() in package grid?
I tried something like
library(grid)
grid.polygon(x=c(0, 0.5, 1), y=c(0.5, 1, 0.5), gp=gpar(col=NA,
fill=colorRampPalette(c("green", "lightgray"),
space="Lab")(200)))
But am only getting a triangle filled with color green, whereas the
aim is a triangle of color gradient from green to lightgray.
Can grid.polygon() generate a color gradient, or am I being mistaken?
Best to my knowledge, is it true that R currently doesn't contain any
other function that might generate a polygon with color gradient?
Thank you!
Kexin
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