R help - Jun 2008 - replace column headers

Hello everyone,=I have a question as to how to remove the column headers
in a data file and then replace those with titles from another file in this case
the file labeled ann  (
in which the titles are all in one column).I am unsure which function to
use.I tried rm () to remove the column headers but they are numbers and
 the error message said to only use rm for charactors not numbers
Below is the code I used, I abbreviated the file path. 
dat<-read.table(file="C:\\Documents and
Settings\\....txt",header=F,row.names=1)
x.df<-as.data.frame(dat)
rm(dat[,1])
file.show(file="C:\\Documents and
Settings....txt")
ann<-read.table("C:\\Documents and Settings\\......txt=")
file.show(file="C:\\Documents and Settings\\.......txt")
Any help would be appreciated   
Paul


      
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Paul Adams wrote:
> 
> 
> Hello everyone,=I have a question as to how to remove the column headers
> in a data file and then replace those with titles from another file in this
case
> the file labeled ann  (
> in which the titles are all in one column).
Maybe this will help partially.

I am not sure on how to read your new column names from a file into a vector
but if you can get them into that format this should let you accomplish your
goal.

Esmail

----

 > load("Data/simpleTestData2.rda")

 > df
        Y X1   X2   X3 X4 X5 X6
1   74.9 10 49.8  0.2 99 50 57
2   79.8 11 49.6  0.4 69 91 57
3   84.4 12 48.8  1.2 30 38 58
4   88.8 13 47.6  2.4 77 87 58

 > colnames(df)
[1] "Y"  "X1" "X2" "X3" "X4"
"X5" "X6"

 > altnames=c("A", "B1", "B2", "B3",
"B4", "B5", "B6")

 > colnames(df)=altnames

 > df
        A B1   B2   B3 B4 B5 B6
1   74.9 10 49.8  0.2 99 50 57
2   79.8 11 49.6  0.4 69 91 57
3   84.4 12 48.8  1.2 30 38 58
4   88.8 13 47.6  2.4 77 87 58

 > save("df", file="example.rda")

# new file will contain the new column headers.