The general procedure is that you create the datastore and then convert it into a tall array. If the data is relatively straightforward then the call to datastore is simplified. But if the data has missing data, several different types, header lines, etc... then you can call additional options with datastore (see the doc).
In the simplest case it can be as easy as:
ds = datastore('path/to/my/data.csv');
T = tall(ds)
