[R] flexible alternative to subsetting dataframe inside nested loops

I have a dataFrame variable: L1 L2 L3 ... v1 v2 ... 1 2 3 4 ... I want to process subsets of it as defined by combinations of L1-L2-L3. I do it successfully using nested loops: for (i in valuesOfL1 { for (j in valuesOfL2) { for (k in valuesOfL3) { tempData <- subs

[R] convex polygon filling an empty void in a cloud of points

Hi, I am trying to locate an R function/package to calculate a convex polygon that fills an empty void in a cloud of points (sort of opposite to a convex hull, for which many function can be found in R). Thanks, Marcin -- View this message in context: http://www.nabble.com/convex-polygon-filli