[R] Finding multiple breakpoints - 'segmented' ?

Peter Hoitinga peter.hoitinga at gmail.com
Fri Jun 1 11:35:47 CEST 2012


Hello,

I'm attempting to find multiple breakpoints in an association of my
response variable (R.AUC) with two explanatory variables ('s.size' and
'bedekking'). The association between 's.size' and 'R.AUC' shows a
plateau, but the value when this plateau is reached is differs for
different values of 'bedekking'.

Initially I thought these different values could be assessed by the
'segmented' function in the package of the same name, but this only
seems to give one value of a breakpoint for each explanatory variable.
A similar issue was treated in the following message from 2006:
https://stat.ethz.ch/pipermail/r-help/2006-January/086446.html

Does anybody know whether there are any packages that do have a
function for this? Or might it be a possibility to split up the data
per value of 'bedekking' and then do the segmented function?



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