[R] Deleting a specific value in a column of a data frame

[Bert Gunter]

You understand, of course, that all columns in a data frame must be of the
same length; and that "NA" is not the same as NA?

This is pretty basic stuff and suggests you need to spend some time with an
R tutorial or two.

In any case, a construct of the form:

B[B >= A] <- NA

should do.

Cheers,
Bert



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 Sat, Jun 23, 2018 at 4:09 AM, javad bayat <j.bayat194 using gmail.com> wrote:

> Dear R users;
> I have two columns data frame (column names is A and B). I want to write a
> function in order to compare column of B with A and if the values of B are
> equal or greater than that of A, replace them with "NA" or delete them and
> if the values of B are less than values in A, do nothing.
>
> Sincerely.
>
> --
> Best Regards
> Javad Bayat
> M.Sc. Environment Engineering
> Alternative Mail: bayat194 using yahoo.com
>
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