ggplot: Determining the order in which lines are drawn
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library(ggplot2) | |
df <- data.frame( n=c("a","a","b","b","c","c"), x = rep(c(1,2), 3), y = rep(c(1), 6), l = as.factor(c(1,1,0,0,0,0))) | |
# Contents of df: | |
# n x y l | |
# 1 a 1 1 1 | |
# 2 a 2 1 1 | |
# 3 b 1 1 0 | |
# 4 b 2 1 0 | |
# 5 c 1 1 0 | |
# 6 c 2 1 0 | |
# Group by n: random order of label l | |
p <- ggplot(df, aes(x,y)) + geom_line(aes(group=n, color=l)) | |
print(p) | |
# Concatenate label and name, and group by this: | |
df$o <- as.factor(apply(format(df[,c("l", "n")]), 1, paste, collapse=" ")) | |
p <- ggplot(df, aes(x,y)) + geom_line(aes(group=o, color=l)) | |
print(p) |
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