[R] Variable which has the maximum value of DF

[Peter Dalgaard]

Henrique Dallazuanna wrote:
> Perhaps,
>
> names(which.max(sapply(DF, max)))
>   
Nice.

I was thinking along the lines of

M <- as.matrix(DF)
colnames(M)[col(M)[which.max(M)]]
>
> On 15/10/2007, Lauri Nikkinen <lauri.nikkinen at iki.fi> wrote:
>   
>> Hi,
>>
>> Suppose I have a data.frame like this
>>
>> Lines <- "var1 var2 var3 var4 var5 var6
>>
>> 0      2      1     2      0      0
>> 2      3      7     6      0      1
>> 1.5    4      9     9      6      0
>> 1.0    6      10    22     3      3
>> "
>> DF <- read.table(textConnection(Lines), skip=1)
>> names(DF) <- scan(textConnection(Lines), what = "", nlines = 1)
>>
>> How do I find the name of the variable which has the maximum value of
>> the data.frame? In this example the answer is "var3" (22).
>>
>> Best regards,
>> Lauri
>>
>> ______________________________________________
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>> PLEASE do read the posting guide
>> http://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
>>
>>     
>
>
>
>   
> ------------------------------------------------------------------------
>
> ______________________________________________
> R-help at r-project.org mailing list
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> and provide commented, minimal, self-contained, reproducible code.
>   


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