On Wed, Sep 12, 2012 at 4:04 PM, Jason Love <jason.love1...@gmail.com> wrote:
> Hello,
> I'd like to test a significance of two variables in their correlation using
> rcorr, which gave me an error of format incompatibility.
> Below are the lines that I typed in the R window and let me know if anyone
> knows how to resolve this.
>
> Var=read.csv("03apr10ab_corr_matrix_in_overlaps.csv",header=F)
> colnames(Var)=c("D Prime","T statistics")
>
> D Prime T statistics
> 1 1.7234e-01 4.926800
> 2 1.4399e-01 2.892000
> 3 1.4626e-01 2.642800
> 4 3.5147e-02 1.112400
> 5 5.8957e-02 2.723700
>
>
> rcorr(Var, type="pearson")
Untested (because I'm still without respectable internet after a move)
I believe rcorr would rather have a matrix than a data.frame(), which
is what read.csv produces, so try
Var <- as.matrix(Var)
or
rcorr(as.matrix(Var), type = "pearson")
>
> Error in storage.mode(x) <- if (.R.) "double" else "single" :
> (list) object cannot be coerced to type 'double'
This suggests that the input to rcorr is being converted to a double,
which isn't a valid storage.mode change for a list (= data frame).
Cheers,
M
>
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>
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