Thank you all for the advice here. I followed the suggestion that check the
output of the parameters, and found that there might be two possibilities to
cause the problem. First was there was missing value in real.d / real.b; the
second was when beta2 was NA. I fixed the data set and the error no longer
shows up.
Thank you very much!
Jen
-----Original Message-----
From:Alberto Monteiro , [EMAIL PROTECTED]
Sent: 2006-10-17, 11:36:40
To: r-help@stat.math.ethz.ch
CC:
Subject: Re: [R] if statement error
Jenny Stadt wrote:
>
> I was not able to make this work. I know it is a simple one, sorry
> to bother. Give me some hints pls. Thanks!
>
Are you a C programmer? :-)
> if(length(real.d) >=30 && length(real.b) >=30 &&
> beta1*beta2*theta1*theta2 >0 )
>
> { r <- 1; corr <- 1; }
>
I _think_ you should use & instead of &&. And drop the second ";".
Also, don't forget that "return x" is wrong [it took me a long
time to figure out that R != C, and it's just return(x)]
Alberto Monteiro
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