Dieter Menne wrote:
Henrik Wahren wrote:
How can one or more levels be removed from a factor of a data frame. There
was a similar post on how to do this when a factor meets some criterion
(e.g. <= 2), but I can¹t seem to get that solution to work.
Here, I simply want to drop some levels.
Henrik Wahren wrote:
>
> How can one or more levels be removed from a factor of a data frame. There
> was a similar post on how to do this when a factor meets some criterion
> (e.g. <= 2), but I can¹t seem to get that solution to work.
> Here, I simply want to drop some levels.
>
>
Simply ca
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