How can I extract only the information about the same group from the table information?

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shoki kobayashi 2021-1-15

评论： shoki kobayashi 2021-1-19

Currently, I would like to extract only the information about the same group of tables.

For example, in a table named A

I want to extract the information about the group [1,2,3] for the first column.

dpb 2021-1-18

Actually, rereading the Q? and looking at the data more closely, I'm guessing what OP is looking for is grouping variables.

Depending upon just what is meant by "table" here, rowfun, varfun or findgroups, splitapply are likely what is really wanted/need.

shoki kobayashi 2021-1-19

Thanks for the reply, @dpb and @Maadhav Akula.

Using ismember worked for me.

I'm sorry that my question was misinterpreted.

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