[R] Error in cor.default(x1, x2) : missing observations in cov/cor
Ken Spriggs
ksspriggs at gmail.com
Thu Feb 28 16:11:21 CET 2008
Thanks. Your suggestion works.
Daniel Malter wrote:
>
> Does the code below solve your problem? If you have NAs in the same rows,
> you have to use "c" or "p" as use= parameters. Otherwise you get the error
> you described.
>
> a=c(1,2,3,4,NA,6)
> b=c(2,4,3,5,NA,7)
>
> which(is.na(a))==which(is.na(b))
>
> cor(a,b) ####Error
> cor(a,b,use="all.obs") ####Error
>
> cor(a,b,use="complete.obs") #### Does it. AND
> cor(a,b,use="pairwise.complete.obs") #### Does it too.
>
> -------------------------
> cuncta stricte discussurus
> -------------------------
>
> -----Ursprüngliche Nachricht-----
> Von: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org] Im
> Auftrag von Ken Spriggs
> Gesendet: Wednesday, February 27, 2008 4:34 PM
> An: r-help at r-project.org
> Betreff: [R] Error in cor.default(x1, x2) : missing observations in
> cov/cor
>
>
> Hello,
>
> I'm trying to do cor(x1,x2) and I get the following error:
> Error in cor.default(x1, x2) : missing observations in cov/cor
>
> A few things:
> 1. I've used cor() many times and have never encountered this error.
> 2. length(x1) = length(x2)
> 3. is.numeric(x1) = is.numeric(x2) = TRUE
> 4. which(is.na(x1)) = which(is.na(x2)) = integer(0) {the same goes for
> is.nan()}
> 5. I also try cor(x1,x2, use = "all.obs") and get the same error.
>
> What can be going wrong?
>
>
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> tions-in-cov-cor-tp15723848p15723848.html
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>
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