Morpho (version 2.12)

predictRelWarps: predict relative warps for data not included in the training data set

Description

predict relative warps for data not included in the training data set

Usage

predictRelWarps(x, newdata, noalign = FALSE)

Value

returns a list containing

bescores

relative warp scores (PC-scores if alpha = 0)

uniscores

uniform scores, NULL if alpha = 0

Arguments

x

output from relWarps

newdata

k x m x n array holding new landmark data

noalign

logical: if TRUE, data is assumed to be already aligned to training data and alignment is skipped.

Details

This function aligns the new data to the mean from x and transforms it into the relative warp space computed from the training data.

Examples

data(boneData)
set.seed(42)
training <- sample(1:80,size=60)
rW1 <- relWarps(boneLM[,,training], alpha = -1)
## predict scores for the entire sample
predAll <- predictRelWarps(rW1,boneLM)

## now compare the scores predicted scores to the original ones
layout(matrix(1:4,2,2))
for (i in 1:2) {
  plot(rW1$bescores[,i],predAll$bescores[training,i],main=paste("RW",i))
  plot(rW1$uniscores[,i],predAll$uniscores[training,i],main=paste("UC",i))
}