problem with read.table
Potential helpers need more information.
Type:
head(a)
and
str(a)
and post the results.
Compare with the output of the same commands on a
dataframe that does have this problem.
-Don
At 5:01 PM +0530 8/25/05, Krishna wrote:
Hi Mr. Pedro I tried names(a) and it displayed the names as X, Y and Z. rgds snvk On 8/25/05, Pedro J. Aphalo <pedro.aphalo at cc.jyu.fi> wrote:
Hi, Did you try names(a) so see what are the names of the columns in the dataframe? Hope this helps a little. Pedro. Krishna wrote:
> Hi All > > recently i faced an unknown problem while reading the data. Can > someone help me in understanding why this happened. > > I have .txt file containing X, Y, Z variables. I used the command > >
>>a <- read.table("filename", header=TRUE)
> > after reading the file i am able to view it by tryping a. but i am > unable to access the variables in a, by giving the command a$X. > >
>>a$X >>NULL
> > > this is the output it was showing. However the same i am able to > access by giving a[[1]]. i tried changing the mode by issuing command > a <- as.data.frame(a). But situation remains the same. > > look forward for experts suggestion on this. > > rgds > > snvk > > ______________________________________________ > R-help at stat.math.ethz.ch mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide!
http://www.R-project.org/posting-guide.html -- ================================================================== Pedro J. Aphalo Department of Biological and Environmental Science University of Jyv??skyl?? P.O. Box 35, 40351 JYV??SKYL??, Finland Phone +358 14 260 2339 Mobile +358 50 3721504 Fax +358 14 260 2321 mailto:pedro.aphalo at cc.jyu.fi http://www.jyu.fi/~aphalo/ ,,,^..^,,, ==================================================================
______________________________________________ R-help at stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
-------------------------------------- Don MacQueen Environmental Protection Department Lawrence Livermore National Laboratory Livermore, CA, USA