[R] For each entry type in column?

Bert Gunter bgunter.4567 at gmail.com
Mon Nov 6 18:55:45 CET 2017

Time to go through a tutorial or two! -- This forum cannot replace such
self study.

Your query evidences some basic confusion, but ?tapply or the equivalent
lapply(split(...)) construct are most likely relevant.


Bert Gunter

"The trouble with having an open mind is that people keep coming along and
sticking things into it."
-- Opus (aka Berkeley Breathed in his "Bloom County" comic strip )

On Mon, Nov 6, 2017 at 9:40 AM, mviljamaa <mviljamaa at kapsi.fi> wrote:

> How can I do a for loop that does to a data.frame column what:
> for x in xs:
> does in Python?
> Obviously the data.frame column in question holds "levels". What if the
> data.frame is in matrix form?
> BR, Matti
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