Hi,
I have a table with three columns of data, let's call these a, b and
c. I have produced a scatter plot of a against b, but I would like to
colour the points according to their corresponding c values. c takes
the value of either 0,1,2,3 or 4 and so I would like to colour all of
the points with a c value of 0 one colour, all those with a c value of
1 another colour etc. When I use the following code, it colours the
points using default colours, which are not suitable:
data<-read.table('abc',header=T, sep="\t")
attach(data)
library(lattice)
xyplot(a~b, col=c)
I was therefore wondering how to specify my own set of colours for
each of the c values. Any help would really be appreciated as I have
spent ages reading through the documentation, but with no luck.
Thanks,
Sarah
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