warpSet: current jitter is more than 1% of sd

[SamGG]

Hi,

While diving into warpSet, I noticed the jittering. The comment claims adding %1 of sd aka a small amount of noise. Unfortunately, sd is not calculated and the doc of jitter says that the default leads to d/5 where d is about the smallest difference between x values (factor being 1). When there are 2 landmarks, jitter generates a uniform random number between -20% and +20% of the gap between landmarks, which quite huge IMO.

I know you are considering warpSet and gaussNorm as unsupported, but I wanted to let you know.

I added , factor = 0.1 for testing.

Best.

flowStats/R/warpSet.R

Lines 766 to 767 in fabb131

	#add a small amount of noise 1% of sd (robust) to the target landmarks
	capture.output(regDens <- landmarkreg(fdobj, landmarks, x0marks=apply(landmarks,2,jitter)[rownames(landmarks)%in%target,],WfdPar=WfdPar,