[R] Auto Data in the ISLR Package

[peter dalgaard]

That probably works in this case, but it would cause grief if another car make had "ford" somewhere inside its name e.g. "bedford". Safer general practice is 

Auto[Auto$name %in% c("ford", "toyota"),]

or similar using subset().

-pd

> On 17 Dec 2017, at 09:10 , Eric Berger <ericjberger at gmail.com> wrote:
> 
> myAuto <- Auto[ grep("ford|toyota",Auto$name),]
> 
> 
> 
> On Sat, Dec 16, 2017 at 10:28 PM, Bert Gunter <bgunter.4567 at gmail.com>
> wrote:
> 
>> I did not care to load the packages -- small reproducible examples are
>> preferable, as the posting guide suggests.
>> 
>> But, if I have understood correctly:
>> 
>> See, e.g. ?subset
>> 
>> Alternatively, you can read up on indexing data frames in any good basic R
>> tutorial.
>> 
>> Cheers,
>> Bert
>> 
>> Bert Gunter
>> 
>> "The trouble with having an open mind is that people keep coming along and
>> sticking things into it."
>> -- Opus (aka Berkeley Breathed in his "Bloom County" comic strip )
>> 
>> On Sat, Dec 16, 2017 at 11:44 AM, AbouEl-Makarim Aboueissa <
>> abouelmakarim1962 at gmail.com> wrote:
>> 
>>> Dear All:
>>> 
>>> I would like to create a subset data set *with only* all Ford and all
>>> Toyota cars from the Auto data set  in ISLR R Package.  Thank you very
>> much
>>> in advance.
>>> 
>>> Please use the following code to see how is the data look like.
>>> 
>>> 
>>> install.packages("ISLR")
>>> library(ISLR)
>>> data(Auto)
>>> head(Auto)
>>> 
>>> 
>>> with many thanks
>>> abou
>>> ______________________
>>> 
>>> 
>>> *AbouEl-Makarim Aboueissa, PhD*
>>> 
>>> *Professor of Statistics*
>>> 
>>> *Department of Mathematics and Statistics*
>>> *University of Southern Maine*
>>> 
>>>        [[alternative HTML version deleted]]
>>> 
>>> ______________________________________________
>>> R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
>>> https://stat.ethz.ch/mailman/listinfo/r-help
>>> PLEASE do read the posting guide http://www.R-project.org/
>>> posting-guide.html
>>> and provide commented, minimal, self-contained, reproducible code.
>>> 
>> 
>>        [[alternative HTML version deleted]]
>> 
>> ______________________________________________
>> R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
>> https://stat.ethz.ch/mailman/listinfo/r-help
>> PLEASE do read the posting guide http://www.R-project.org/
>> posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
>> 
> 
> 	[[alternative HTML version deleted]]
> 
> ______________________________________________
> R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.

-- 
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