[R] extract a row
ramasamy at cancer.org.uk
Mon Aug 16 20:15:53 CEST 2004
df[ df$rate==slow, ]
On Mon, 2004-08-16 at 18:48, Randy Zelick wrote:
> Hello there,
> Using 1.9.0 on WinXP...
> I have a data frame, one column of which is named "rate". The column has
> text entries like "fast", "medium", "slow", "very slow", and so forth. I
> have not tried to make them factors, but maybe R did this automatically.
> Anyway, I would like to display on the console rows that meet a rate
> So I want to type something like:
> and get back this sort of output:
> test subject trial rate score
> 34 B27 3 slow 27
> 55 B55 4 slow 34
> where test, subject, trial, rate, and score are all the
> dataframe's columns.
> How do I do that??
> R. Zelick email: zelickr at pdx.edu
> Department of Biology voice: 503-725-3086
> Portland State University fax: 503-725-3888
> P.O. Box 751
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