Change text color for single facets in ggplot2
ggplot2, graph, r, textcolor
Solution
You want to change the attributes of the `strip` element, not the facet. Try something like the code below. Note that this is a minimal example based on fake data made up at random, as you did not provide your own data for us to work with. You'll have to adapt the code to your needs.
require(reshape)
require(ggplot2)
require(scales)
# fake data
mydf <- data.frame(val1 = runif(10, 0, 1), val2 = runif(10, 0, 1))
mydf
# reshape to long format
long.data <- melt(mydf)
long.data$facetvar <- "implicit"
long.data$facetvar[seq(1, 19, 2)] <- "explicit"
long.data
# plot
ggplot(long.data, aes(y = value, x = variable)) +
geom_bar(position = 'dodge', stat = "identity") +
facet_wrap (~ facetvar) +
theme(strip.background = element_rect(fill = alpha('green', 0.3))) +
theme(strip.text.x = element_text(colour = 'blue', size = 10))
This produces a plot like this:
Problem
I have created the plot below with these commands: ``` ggplot(long.data, aes(owner,value)) + stat_summary(fun.y=mean,geom="bar", fill=c("deepskyblue","deepskyblue4")) + stat_summary(fun.data=mean_cl_normal,geom="errorbar",position= position_dodge(width=.90),width=.1) + labs(x="",y="") + facet_grid(IV~experiment+type,scales="free_y") + theme(strip.text.y = element_text(colour = 'red4')) ``` If I want to change the text color (and possibly also the background color) for only the upper x facet (in this case 'Implicit' and 'Explicit' levels), how can I do that? Is it possible? I have not read nothing about that in the ggplot2 documentation. EDIT: I'm sorry for the confusion. My aim is to change the text and background color of one of the upper strips, not the color of the facet.