problem with read.table

Hi  Mr. Pedro

I tried names(a) and it displayed the names as X, Y and Z.

rgds

snvk
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

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--
==================================================================
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/                       ,,,^..^,,,
==================================================================

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
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