[R] median Q?

[Mohamed Lajnef]

Hi,

Try this median(v2[v1==1])

Mohamed
Regards

Vlatka Matkovic Puljic a écrit :
> I have additional Q:
>
> v1 is gender (M=1 and F=2)
> v2 is age
>
> I want R to calculate median only for M (1),
> but my comand is not good :)
>
> while(v1=1){median(v2,na.rm=TRUE)}
> Error: unexpected '=' in "while(Q2="
>
> 2010/4/21 Vlatka Matkovic Puljic <v.matkovic.puljic at gmail.com>
>
>   
>> Thank you!
>>
>> 2010/4/21 Joshua Wiley <jwiley.psych at gmail.com>
>>
>>     



>> Hello,
>>     
>>> summary() removes NAs by default.  You can get the same results using
>>>
>>> median(year, na.rm=TRUE)
>>>
>>> see ?median
>>>
>>> HTH,
>>>
>>> Josh
>>>
>>> On Wed, Apr 21, 2010 at 6:40 AM, Vlatka Matkovic Puljic
>>> <v.matkovic.puljic at gmail.com> wrote:
>>>       
>>>> Hi,
>>>>
>>>> I have dataset n1 and v1 (years).
>>>> when i ask
>>>> median(year)
>>>> [1] NA
>>>>
>>>> but if i put summary of dataset n1:
>>>> summary(n1)
>>>> R produces median (together with min/max/mean....)
>>>>
>>>> why it is so?
>>>>
>>>>
>>>> --
>>>> **************************
>>>> Vlatka Matkovic Puljic
>>>> 095/8618 171
>>>>
>>>>        [[alternative HTML version deleted]]
>>>>
>>>> ______________________________________________
>>>> R-help at r-project.org mailing list
>>>> 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.
>>>>
>>>>         
>>>
>>> --
>>> Joshua Wiley
>>> Senior in Psychology
>>> University of California, Riverside
>>> http://www.joshuawiley.com/
>>>
>>>       
>>
>> --
>> **************************
>> Vlatka Matkovic Puljic
>> 095/8618 171
>>
>>     
>
>
>
>   


-- 


Mohamed Lajnef,IE 
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