CODEWITHSUNDEEP
rggplot2bar-chartfacet
media
media

Reputation: 453

Stacked bar chart with multiple facets

I am trying to plot a stacked bar chart with multiple facets using the code below:

dat <- read.csv(file="./fig1.csv", header=TRUE)
dat2 <- melt(dat, id.var = "id")
ggplot(dat2, aes(x=id, y=value, fill = variable))  +
geom_bar(stat="identity") +
facet_grid(. ~ col1) +
geom_col(position = position_stack(reverse = TRUE))

and here is a minimized example of how my data looks like: 

id col1 col2 col3 col4 col5
1   1   0.2  0.1  0.1  0.1 
2   1   0.2  0.1  0.2  0.1
3   1   0.2  0.2  0.2  0.1
4   2   0.1  0.1  0.2  0.1
5   2   0.1  0.1  0.1  0.2

However, I keep getting the error below. I think the problem is coming from facet_grid(. ~ col1) and more specifically using col1.

Error in combine_vars(data, params$plot_env, cols, drop = params$drop) : 
At least one layer must contain all variables used for facetting

Does anyone have any idea how I can fix that?

Upvotes: 0

Views: 257

Answers (1)

S Rivero
S Rivero

Reputation: 708

The col1 is not included as variable in the melt function, so it will be melted together with the rest of columns. Just include col1 as variable in the melt function.

dat2 <- melt(dat, id.var=c("id", "col1"))

Upvotes: 1

Related Questions