[R] Newbie syntax question

[jim holtman]

?cor.test

and the help page says:

formula:   a formula of the form ~ u + v, where each of u and v are
numeric variables giving the data values for one sample. The samples
must be of the same length.

On 1/12/08, Joe Trubisz <jtrubisz at mac.com> wrote:
> Hi...
>
> I'm trying to understand the following syntax:
>
> cor.test(~mortality + hardness,data=water,method="pearson")
>
> which is the same as:
>
> cor.test(water$mortality,water$hardness,data=water,method="pearson")
>
> Can anyone point me to the correct doc or explain to me how to
> interpret "~mortality + hardness"?
>
> Thanks,
> Joe
>
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>


-- 
Jim Holtman
Cincinnati, OH
+1 513 646 9390

What is the problem you are trying to solve?