[R] pull stat out of summary

[peter dalgaard]

> On 01 Apr 2017, at 01:54 , Sarah Goslee <sarah.goslee at gmail.com> wrote:
> 
> The short answer is that hold isn't a list-like object, and $ only
> works with list-like objects (lists and data frames, mainly).
> 
> You can get the full explanation (VERY full), at
> ?Extract
> or any of its aliases, like
> ?'$'
> or
> ?'['
> 

...and the intermediate answer is: hold["Mean"]

-pd

> Sarah
> 
> On Fri, Mar 31, 2017 at 7:11 PM, Evan Cooch <evan.cooch at gmail.com> wrote:
>> Continuing my learning curve after 25_ years with using SAS. Want to pull
>> the "Mean" forom the summary of something...
>> 
>> test <- rnorm(1000,1.5,1.25)
>> 
>> hold <- summary(test)
>> 
>> names(hold)
>> [1] "Min."    "1st Qu." "Median"  "Mean"    "3rd Qu." "Max."
>> 
>> OK, so "Mean" is in there.
>> So, is there a short form answer for why hold$Mean throws an error, and
>> hold["Mean"} returns the mean (as desired)?
>> 
>> Silly question I know,  but gotta start somewhere...
>> 
>> Thanks...
>> 
> 
> -- 
> Sarah Goslee
> http://www.functionaldiversity.org
> 
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-- 
Peter Dalgaard, Professor,
Center for Statistics, Copenhagen Business School
Solbjerg Plads 3, 2000 Frederiksberg, Denmark
Phone: (+45)38153501
Office: A 4.23
Email: pd.mes at cbs.dk  Priv: PDalgd at gmail.com