Checks if data is in disjunctive (sometimes called complete binary) format. To be used with MCA (e.g., epMCA).
epMCA
nominalCheck(DATA)
A data matrix to check. This should be 0/1 disjunctive coded. nominalCheck just checks to make sure it is complete.
nominalCheck
If DATA are nominal, DATA is returned. If not, stop is called and execution halts.
DATA
stop