[R] how to overlook the zero in the denominator

From: Chun-Ying Lee <u9370004_at_cc.kmu.edu.tw>
Date: Wed 27 Jul 2005 - 18:51:37 EST


Dear R users:

I have two set of data, as follow:
x<-c(0,0,0.28,0.55,1.2,2,1.95,1.85,
     1.6,0.86,0.78,0.6,0.21,0.18)

y<-c(0,0,0,0.53,1.34,1.79,2.07,1.88,

    1.52,0.92,0.71,0.55,0.32,0.19)
i<-1:length(x)

I want to sum each (x[i]-y[i])^2/x[i] together, like:
>Sum <-sum((x[i]-y[i])^2/x[i])
>Sum

[1] NaN

Because the denominator shoud not be zero. So I want to overlook those when x[i]=0, and just to sum those x[i] not equal to 0. What should I do?
Any suggestion.
Thanks in advance !!



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https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Wed Jul 27 18:56:31 2005

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