The Lhs variable consists of 0s and a single 1 which indicates the choice that the individual made. The Lhs variable consists of a set of sample proportions. Values range from 0 to 1, and they sum to 1.0 over the set of choices in the choice set. Observed proportions may equal 1.0 or 0.0 for some observations. The Lhs variable consists of a set of frequency counts for the outcomes.
Frequencies are nonnegative integers for the outcomes in the choice set.
Frequencies may be 0. The Lhs variable consists of a complete set of ranks of the alternatives in the individual's choice set. Note that the positions of the 1s is the same for both sets, by definition. You do not have to give any additional information about the data set, since the type of data being provided can be deduced from the values. Also, data are checked for validity and consistency.