topic Re: How to select a subset of a data table given a subset of rows in Discussions

How to select a subset of a data table given a subset of rows

mostarr — Sat, 10 Jun 2023 23:32:03 GMT

Hi this should be fairly simple to knock out.

How do I select a subset of a data table, all columns, given a subset of its rows?

I didn't see anything about this in the scripting index, neither in select where nor in subset. But apologies if it's obviously found somewhere. I just didn't find it.

Mike

Re: How to select a subset of a data table given a subset of rows

mostarr — Thu, 17 Jun 2021 21:12:38 GMT

I tried

data = dt << Subset( Rows(rows));

but it only gave me individual data tables (subsets, so, technically correct) of the first column of the row. I don't know why.

Re: How to select a subset of a data table given a subset of rows

txnelson — Thu, 17 Jun 2021 21:20:09 GMT

data = dt << Subset( Rows(rows), selected columns(0));

Try the above. I am assuming that your variable rows contains a matrix to the row numbers you want subsetted.

Re: How to select a subset of a data table given a subset of rows

mostarr — Thu, 17 Jun 2021 21:34:45 GMT

row = dt << Get Rows (row_num);

seems to do the trick. Thanks!