[R] Add function to each row excluding certain columns

laro l_rohner at gmx.ch
Wed Oct 9 23:18:43 CEST 2013

Thank you for the fast answer!

Is there any way to use the first solution way, but work with the column
names instead of the number of the column. Because in further calculation I
need to drop more columns than just the restriction ones and the real
dataset has to many columns to work with the position of the column.

Kind regards

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