Boxplots for groups?

Question

I have a dataset (test) as given below:

Type    Met1    Met2    Met3    Met4
TypeA   65  43  97  77
TypeA   46  25  76  77
TypeA   44  23  55  46
TypeA   46          


        

Answer 1

A solution with ggplot2.

First, transform your data frame test to the long format using melt:

library(reshape2)
test.m <- melt(test)

Plot the data:

library(ggplot2)
ggplot(test.m, aes(x = variable, y = value, fill = Type)) +
  geom_boxplot() +
  scale_fill_manual(values = c("yellow", "orange"))