Re: naming of columns in R dataframe consisting of mixed data (alphanumeric and numeric)

> From: Mary A. Marion <mmstat@...>
> Subject: [R] naming of columns in R dataframe consisting of mixed data (alphanumeric and numeric)
> To: r-help@...
> Received: Friday, 10 July, 2009, 3:50 AM
> Hello,
>
> I have an r function that creates the following dataframe
> tresults2.
> Notice that column 1 does not have a column heading.
>
> Tresults2:
>              
>    [,1]
> estparam     18.00000
> nullval      20.00000
> . . .
> ciWidth       2.04622
> HalfInterval  1.02311
>
> pertinent code:
> results<-cbind( estparam, nullval, t, pv_left, pv_right,
> pv_two_t,
> estse, df,  cc, tbox, llim, ulim, ciWidth,
> HalfInterval)
> tresults<-round((results),5)
> tresults2<-data.frame(t(tresults))
> names(tresults2)<-c("Statistic ", "Value")
> tresults2
>
> ===========================================================================================
> After transposing my dataframe tresults2 consists of 2
> columns. 
> Col1=alphanumeric data (this really is a variable name)
> and
> col2=numeric data (this is value of varaiable).
>
> how do I name columns when columns are different
> (alphanumeric and numeric)
> to avoid the following error:
>
> Error in names(tresults2) <- c("Statistic ", "Value") :
>   'names' attribute [2] must be the same length as the
> vector [1]
>
> Am I to use c( , ) or list( , ) with a dataframe?
>
> Thank you for your help.
> Sincerely,
> Mary A. Marion
>
>
>
>
>
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>
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