How to use color shade in Stacked bar plot?

Far too vague a question but perhaps something like

barplot(1:12, col = c("brown1", "brown3", "brown2", "firebrick",
"firebrick1", "firebrick4",
"firebrick3", "firebrick2", "darkred", "red4", "red3"))

legend("topleft", col = c("brown1", "brown3", "brown2", "firebrick",
"firebrick1", "firebrick4",
"firebrick3", "firebrick2", "darkred", "red4", "red3"), legend = 1:12, pch = 15)

Michael

On Mon, Jul 23, 2012 at 11:34 AM, Manish Gupta

Hi,

I am wokring on stacked R plot but i want to use shade color of red for each
stack and corresponding legend. How can i use it?

Regards



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Hi,

I am wokring on stacked R plot but i want to use shade color of red for each
stack and corresponding legend. How can i use it?

Hi Manish,
I think what you want is a series of reds that you can use to 
distinguish the bars in a stack. The series will be repeated in each 
stack of the plot. If this is the case, maybe this will help:

library(plotrix)
# assume you have five bars in each stack
# first use saturation - deep red to pink
myreds1<-color.scale(1:5,1,c(0,0.7),c(0,0.7))
# then try brightness - bright red to dark red
myreds2<-color.scale(1:5,c(1,0,5),0,0)
# finally use different red colors
myreds3<-color.scale(1:5,1,c(0,0.3),c(0.3,0))

Jim