[R] extracting a element with a name attribute from a list

[Peter Dalgaard]

"Taka Matzmoto" <sell_mirage_ne at hotmail.com> writes:

> Hi R users
> 
> I like to extract (or collect) a numeric element with a name  from a list.
> 
> Is there any way to extract just a numeric element without the name
> attached to the element.
> 
> For example,
> 
> >mylist
> 
>         Mantel-Haenszel chi-squared test with continuity correction
> 
> data:  table(mydata[, x])
> Mantel-Haenszel X-squared = 8.3832, df = 1, p-value = 0.003787
> alternative hypothesis: true common odds ratio is not equal to 1
> 95 percent confidence interval:
> 0.2596963 0.7647255
> sample estimates:
> common odds ratio
>         0.4456415
> 
> >is.list(mylist)
> [1] TRUE
> >names(mylist)
> [1] "statistic"   "parameter"   "p.value"     "conf.int"    "estimate"
> "null.value"  "alternative"
> [8] "method"      "data.name"
> >mylist$estimate
> common odds ratio
>         0.4456415
> 
> I like to extract only a numeric element ( 0.4456415 ) without the
> name (common odds ratio).
> 
> How can I do that ?

x <- mylist$estimate
names(x) <- NULL

or

x <- as.vector(mylist$estimate)

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   O__  ---- Peter Dalgaard             Øster Farimagsgade 5, Entr.B
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