Customise labels (for example add aggregate information)

[mpikoula]

First of all thanks for an amazing package, I'm still exploring it and it's really great and comprehensively written.

I am however an R beginner, and have been trying to add a modification for enabling me to print out aggregate information (so sums, or percentages) below the labels. Do you have a suggestion of a starting point for me perhaps?

Cheers,

Maria

[mtennekes]

There is no direct way to do this. A trick that may work is: calculate the aggregates, and add them to you factor levels. For example:

library(treemap)
data(business)

totals <- round(tapply(business$turnover, INDEX = list(business$NACE1), FUN = sum, na.rm=TRUE))
levels(business$NACE1) <- paste(levels(business$NACE1), totals, sep=": ")

treemap(business, index = c("NACE1", "NACE2"), vSize="turnover")

[mpikoula]

Thanks a lot, this sort of does what I want, although would be nice to see a more flexible feature in the future (might get up to it if I find time)

Cheers,

Maria