RE: [R] use of = in place of == (was no subject)

From: John Fox <jfox_at_mcmaster.ca>
Date: Fri 18 Mar 2005 - 13:27:18 EST


Dear Bret,

You appear to have used = (for assignment or argument specification) when you meant == (equals).

I hope this helps,
 John



John Fox
Department of Sociology
McMaster University
Hamilton, Ontario
Canada L8S 4M4
905-525-9140x23604
http://socserv.mcmaster.ca/jfox

> -----Original Message-----
> From: r-help-bounces@stat.math.ethz.ch
> [mailto:r-help-bounces@stat.math.ethz.ch] On Behalf Of Brett
> Stansfield
> Sent: Thursday, March 17, 2005 9:09 PM
> To: R help (E-mail)
> Subject: [R] (no subject)
>
> I recently tried to make R highlight certain features in a
> scatterplot matrix
>
> pairs(sleep[c("SlowSleep", "ParaSleep", "logbrw", "loglife",
> "loggest", "logbw")],
> * col=1+as.integer(ParaSleep > 5.5))
>
> this worked fine but when I wanted to add another
> condition i.e where another variable SlowSleep = 7.7, this is
> what I got
> > pairs(sleep[c("SlowSleep", "ParaSleep", "logbrw",
> "loglife", "loggest", "logbw")],
> * col=1+as.integer(ParaSleep > 5.5 & SlowSleep=7.7))
> Error: syntax error
> > pairs(sleep[c("SlowSleep", "ParaSleep", "logbrw",
> "loglife", "loggest", "logbw")],
> * col=1+as.integer(ParaSleep > 5.5 & SlowSleep= 7.7))
> Error: syntax error
> > pairs(sleep[c("SlowSleep", "ParaSleep", "logbrw",
> "loglife", "loggest", "logbw")],
> * col=1+as.integer(ParaSleep > 5.5 & SlowSleep = 7.7))
> Error: syntax error
> I then tried two separate col statements as below
> > pairs(sleep[c("SlowSleep", "ParaSleep", "logbrw",
> "loglife", "loggest", "logbw")],
> * col=1+as.integer(ParaSleep > 5.5)
> * col1=2+as.integer(SlowSleep = 7.7))
> Error: syntax error
> > pairs(sleep[c("SlowSleep", "ParaSleep", "logbrw",
> "loglife", "loggest", "logbw")],
> * col=1+as.integer(ParaSleep > 5.5)
> * col=2+as.integer(SlowSleep = 7.7))
> Error: syntax error
> But still no joy, can you recommend anything brett.
>
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R-help@stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Fri Mar 18 13:30:50 2005

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