Hello everybody,
I need to ask something in relation to digit.curves in R package geomorph,
because I think that there must be a really fast way to do something that I was
going to do specimen by specimen.
I created a (p x k x n) array using readland.tps from a tps file containing
coordinates of a curve in n=100 specimens (this array is called allcurves). Now
I want to use digit.curves to find 20 equidistant semilandmarks in the curve of
each specimen defined by the coordinates of my array allcurves.
I can use a for loop for that. But the start point of the curve of each
specimen is different. The start point of each curve is the first row (the
first landmark) of each specimen in the array allcurves. Is there any way,
using the for loop, to use the first row of each specimen as the start point
for each curve? I tried this:
equi<-array(NA, dim=c(22,3,100)) #22 because I want to get the start and end
points and 20 equidistant points in the outcome
for(i in 1:100){
equi[,,i]<-digit.curves(allcurves[1,i], allcurves[,,i], 20, closed=F)
}
This error occurs: Error in allcurves[1, i] : incorrect number of dimensions
I know this happens because I am not getting right how to tell the program to
use the first row of each specimen of the array as start point for each curve.
Is there any way to do this? It would be extremely time-saving for my analyses.
Thank you so much in advance. I really appreciate any advise!
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