stacked bar plot with ggplot

Question

I\'m trying to make a stacked bar plot with the following dataframe:

 totalleft
        1S 2S 3S 4S 12S 25S      tests
A-000   5  0 10 10   0  NA       A-000
A-0         


        

Answer 1

This seems like what you wanted??

library(reshape2)
library(ggplot2)

gg <- melt(totalleft,id="tests")
ggplot(gg) +
  geom_bar(aes(x=tests, y=value, fill=variable), stat="identity")+
  theme(axis.text.x=element_text(angle=-90, vjust=.2, hjust=0))

melt(...) converts your data frame from "wide" format (groups in different columns) to "long" format (all the values in one column (called value), and groups distinguished by a separate column (called variable).