[R] Subsetting from data.frame

[Ott Toomet]

Hi,

 | From: "Christian Schulz" <ozric at web.de>
 | Date: Fri, 29 Nov 2002 09:49:44 +0100
 | 
 | Hi,
 | 
 | attach(data)
 | 
 | if (TREUE[TREUE ==11] && EMPFEHL[EMPFEHL < 11])
 | { TREUE <- EMPFEHL }
 | 
 | what's wrong ( TREUE ==EMPFEHL works not,too )?
 | 
 | many thanks & regards,Christian

can you please give us more information?

I think what you want is

ind <- (TREUE == 11) & (EMPFEHL < 11)
TREUE[ind] <- EMPFEHL[ind]

Have you read about indexing, if and ifelse, & and &&?

Regards,

Ott
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