[R] filtering data frame based on two columns

[jim holtman]

Use a single "&"

subdf = df[(df$a==1) & (df$b ==2),]

On Jan 11, 2008 7:26 AM, sun <flyhyena at yahoo.com.cn> wrote:
>
> "sun" <flyhyena at yahoo.com.cn> wrote in message
> news:fm7mtb$tqk$1 at ger.gmane.org...
> > Hi,
> >
> > I have a data frame df with column names a,b and c.
> sorry for some typos.
>
> should be subdf = df[df$a==1,]
> and
> subdf = df[df$a==1 && df$b ==2,]
>
>
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>



-- 
Jim Holtman
Cincinnati, OH
+1 513 646 9390

What is the problem you are trying to solve?