Append rows
Adds to the bottom of the original dataset rows from a newly imported dataset (imported using the Import facility provided).

- The column names from both datasets are matched so the correct data goes into the correct columns
- Columns that appear in one dataset and not the other will appear in the result
- An error will be reported and not appending will be possible if two column names match but their types (e.g. numeric or categorical) do not match
- If the Tick-box option is selected a timestamp variable called When_Added will be added to the dataset recording when the new observations were added
- If there is already a variable called When_Added present in the original data (must be of type date-time,
(t)in View Variables) the new timestamps will be appended to that existing variable
tip
Where data is periodically being added to a dataset, this facility can be used to keep track of when each row was added --- thus facilitating analyses of the data as it was up until any particular time point.