Prediction of new cases from lesymap output — lesymap.predict • LESYMAP

Uses an existing lesyamp object output from your analysis to predict new cases.

lesymap.predict(lsm, lesions.list, binaryCheck = TRUE, showInfo = TRUE,
  ...)

Arguments

lsm	object of class lesymap from previous analysis
lesions.list	list of antsImages, or a vector of filenames, or a single antsImage with 4 dimensions.
binaryCheck	logical (default=FALSE), make sure the lesion matrix is 0/1. This will help if lesion maps are drawn in MRIcron or other software which label lesioned voxel with value 255.
showInfo	logical (default=TRUE), display time-stamped info messages
...	other arguments for flexible calling from other functions.

Value

Vector of predicted values:

behavior.scaled - scaled values as predicted by the model
behavior.raw - descaled raw values

Examples

{
 if (FALSE) {
  lesydata = file.path(find.package('LESYMAP'),'extdata')
  filenames = Sys.glob(file.path(lesydata, 'lesions', 'Subject*.nii.gz'))
  behavior = Sys.glob(file.path(lesydata, 'behavior', 'behavior.txt'))
  lesions = imageFileNames2ImageList(filenames)
  behav = read.table(behavior)$V1 * 1000

  train = 1:100
  test = 101:131

  lsm = lesymap(lesions[train], behav[train], method='sccan',
  sparseness=0.2, validateSparseness=F)
  predbehav = lesymap.predict(lsm, lesions[test])
 }
}