After exporting the pts file of the atlas from "landmark" and importing it into R via "read.pts" cExtract gets information which rows of the landmark datasets belong to curves or patches.
cExtract(pts.file)
returns a list containing the vectors with the indices of matrix rows belonging to the in "landmark" defined curves, patches and fix landmarks and a matrix containing landmark coordinates.
either a character naming the path to a pts.file or the name of an object imported via read.pts.
Stefan Schlager
read.lmdta
,read.pts