MERGE OBSERVATIONS enables you to merge the observations of one dataset with the observations of another dataset to create a third dataset that has both sets of observations in it.

The observations in the current dataset (the highlighted one) are merged with those in the previously current dataset (the one current before the current one). In the new dataset, the observations in the previously current dataset will appear before those in the current dataset.

The two datasets that are merged must have the same number of variables (columns). Usually, it does not make sense to merge observations unless the variables in the two datasets are the same, and in the same order, although ViSta does not check on this.
