rowfun (or other function?) to access multiple rows in a table (as in current + previous 5 rows)

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Andy
Andy 2020-11-14
评论： Peter Perkins 2020-11-19
Following the excel typical example, where a new column can be a formula accessing current row + values in row(s) above / below - based on a row-delta (that specifies how many rows above/below to access), what is the best way to accomplish this in Matlab?
looking at towfun grouping function - the grouping should be dynamic, as in: for Row N, the row function / formula should only access the previous 5 lines ... type of thing - not sure how could this be achievable through the rowfun
thanks
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Peter Perkins
Peter Perkins 2020-11-19
Rowfun doesn't work like that. It will do calculations on groups of rows, but not overlapping groups.
I'm guessing you can do what you want as something like t.NewVar = movsum(t.OldVar,...).

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