ggplot2 plot table as lines

Question

I would like to plot the following dataset

structure(list(X = structure(c(3L, 12L, 11L, 7L, 13L, 2L, 1L, 
10L, 5L, 4L, 8L, 14L, 9L, 6L), .Label = c(\"BUM\", \"DD         


        

Answer 1

The trick is to reshape your data into tall format before you pass it to ggplot. This is easy when using the melt function in package reshape2:

Assuming your data is a variable called df:

library(reshape2)
library(ggplot2)

mdf <- melt(df, id.vars="X")
str(mdf)
ggplot(mdf, aes(x=variable, y=value, colour=X, group=X)) + geom_line() +
    opts(axis.text.x = theme_text(angle=90, hjust=1))

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Edit As @Chase suggests, you can use facetting to make the plot more readable:

ggplot(mdf, aes(x=X, y=value)) + geom_point() +
    opts(axis.text.x = theme_text(angle=90, hjust=1)) + facet_wrap(~variable)