After manually selecting 10 samples from each group (control and scz) as hold-out data and clicking “Next”, I proceeded to build a model. However, in the “R Command History”, I noticed that the system incorrectly generated the selected.smpls vector.
Instead of formatting each hold-out sample as a separate string, the control group sample names were concatenated into a single string. For example, the system generated:
selected.smpls ← c(“control-10control-11control-16control-19control-21…”, “scz-1”, “scz-3”, …)
The correct format should be:
selected.smpls ← c(“control-10”, “control-11”, “control-16”, “control-19”, “control-21”, “scz-1”, “scz-3”, …)