I?ve been busy making some histograms and I would like to distinguish
different groups. I?ve been doing it like this:
a <- c(1,1,1,1,2,2,2)
hist(a,breaks=c(0,1,2))
hist(a[3:5],breaks=c(0,1,2),col="red",add=TRUE)
Basically plotting them over each other, I assume there is a better
way?Anyway what I want to do is make them in grayscale which
essentially
means giving different groups patterns. I?ve been playing around with
?density? and ?angle?
a <- c(1,1,1,1,2,2,2)
hist(a,breaks=c(0,1,2))
hist(a[3:5],breaks=c(0,1,2),add=TRUE,,density=3,angle=9)
Although you can make many different combinations with these I
wondered if
there are ?patterns? (dots for example) available in the similar
fashion as
the colors (col="red" or pattern="dots")