How can I merge successive row values (sum of the values) of the column Y according to a condition in column X?

Dear,

Hope everyone is doing well!

My issue is: I have a two data columns (X and Y) and datime column (10 min interval). I want to merge the successive row values (sum) of column Y if the corresponding values of column X are 0. Otherwise, if one of the X row equals to 1, then no merge.

Knowing that X contains only 0 and 1 values.

Thank you for your collaboration.

[Matt J]

Doesn't that mean that all the Y values in the data you've shown will be summed? There are no ones in the X column at all, so why have you designated only the specific rows circled in red?

[Peter Perkins]

Also you have not said what merging does to the timestamps.

Answer 1

[Peter Perkins]

You want to do grouped sums, where the groups are defined by consecutive zeros in X. Once you have the groups defined as a new variable in (what should be) a timetable, it's a simple matter of calling groupsummary. Usually defining groups like that involves tricks with cumsum and diff. But without a clear example of what you have and what you want, I won't hazard a guess.