R help - May 2010 - how to name the column after converting a vector to a data frame

hell all:

I have a vector as follows:
> head(res)
1007_s_at.value   1053_at.value    117_at.value    121_at.value 1255_g_at.value 
    0.225801033     0.009747404     0.709517954     0.008825740     0.496859178 
  1294_at.value 
    0.005091231

 

after I convert the res into a data frame I got the following:

resx<- data.frame(res)
> head(resx)
                        res
1007_s_at.value 0.225801033
1053_at.value   0.009747404
117_at.value    0.709517954
121_at.value    0.008825740
1255_g_at.value 0.496859178
1294_at.value   0.005091231

 

as you may see, the first column of resx has no names and it does not appear as
one of dimension of data frame.

I wonder anyone may have solution to assign a name to it. 

 

thanks
 		 	   		  
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ID28326::T:WLMTAGL:ON:WL:en-US:WM_HMP:042010_4
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On Mon, May 3, 2010 at 7:21 PM, wei x1 <weix1_2007 at hotmail.com>
wrote:
>
> hell all:
>
> I have a vector as follows:
>
>> head(res)
> 1007_s_at.value ? 1053_at.value ? ?117_at.value ? ?121_at.value
1255_g_at.value
> ? ?0.225801033 ? ? 0.009747404 ? ? 0.709517954 ? ? 0.008825740 ? ?
0.496859178
> ?1294_at.value
> ? ?0.005091231
>
>
>
> after I convert the res into a data frame I got the following:
>
> resx<- data.frame(res)
>> head(resx)
> ? ? ? ? ? ? ? ? ? ? ? ?res
> 1007_s_at.value 0.225801033
> 1053_at.value ? 0.009747404
> 117_at.value ? ?0.709517954
> 121_at.value ? ?0.008825740
> 1255_g_at.value 0.496859178
> 1294_at.value ? 0.005091231
>
>
>
> as you may see, the first column of resx has no names and it does not
appear as one of dimension of data frame.
>
> I wonder anyone may have solution to assign a name to it.
>
 The first column isnt a column! It's the row names. If you want to
make a column from the row names, try:
> res=c(a=1,b=2,c=3)
> resx=data.frame(res)
> resx
  res
a   1
b   2
c   3
> resx$names = rownames(resx)
> resx
  res names
a   1     a
b   2     b
c   3     c

 now it has row names as well as a column (called 'names') with them in.

Barry