R help - Jun 2004 - (no subject)

Hi!!
I am a new user of R (just trying to analysis microarrays with some packages
from the bioconductor project).
I would like to import a text-delimeted file containing 20 columns and 22200
rows.

I have tried 
read.table;
scan(file="")
 <matrix(scan("file", n=20*200,20,200, byrow=TRUE)); 
Doesn't matter what I try I got the next message:
error in file (file "r"): unable to open connection
in addition warning message
cannot open file "MAS5orig" (this is the name of the file I am trying
to import in R)

Any advice? which comman I should you use to import a text file (Excell, text
tab-delimeted file) into R.

Thank you very much for your help.

Best wishes,

Pedro

Pedro Jares, Ph.D.
Genomics Unit, IDIBAPS
Barcelona University
C/ Villarroel 170, 
08036 .Barcelona, Spain
Telf. 93 2275400,
Ext 2184 o 2129
Fax 93 2275717

Please use a more appropriate subject!

----- Original Message ----- 
From: <PJARES at clinic.ub.es>
To: <R-help at stat.math.ethz.ch>
Sent: Tuesday, June 08, 2004 8:25 PM
Subject: [R] (no subject)

> Hi!!
> I am a new user of R (just trying to analysis microarrays with some
packages from the bioconductor project).
> I would like to import a text-delimeted file containing 20 columns and
22200 rows.
>
> I have tried
> read.table;
> scan(file="")
>  <matrix(scan("file", n=20*200,20,200, byrow=TRUE));
> Doesn't matter what I try I got the next message:
> error in file (file "r"): unable to open connection
> in addition warning message
> cannot open file "MAS5orig" (this is the name of the file I am
trying to
import in R)

It's a syntax error, I think.  Why do you have a "<" before
matrix()
command?

Also, which operating system are you running?  Are you sure your working
directory is correct?

Cheers,

Kevin

Hi!

The message means that R does not find the file. 

Under windows (if you are using windows) you must escape the backslash with a
backslash \.
or give us an example how you provide the path to the file.


Or use:

file.choose()

or.

library(tkWidgets)
fileBrowser()


both functions will return the proper path to the file.

Sincerely 

Eryk




*********** REPLY SEPARATOR  ***********

On 6/8/2004 at 10:25 AM PJARES at clinic.ub.es wrote:
>>>Hi!!
>>>I am a new user of R (just trying to analysis microarrays with some
>>>packages from the bioconductor project).
>>>I would like to import a text-delimeted file containing 20 columns
and
>>>22200 rows.
>>>
>>>I have tried 
>>>read.table;
>>>scan(file="")
>>> <matrix(scan("file", n=20*200,20,200, byrow=TRUE)); 
>>>Doesn't matter what I try I got the next message:
>>>error in file (file "r"): unable to open connection
>>>in addition warning message
>>>cannot open file "MAS5orig" (this is the name of the file
I am trying to
>>>import in R)
>>>
>>>Any advice? which comman I should you use to import a text file
(Excell,
>>>text tab-delimeted file) into R.
>>>
>>>Thank you very much for your help.
>>>
>>>Best wishes,
>>>
>>>Pedro
>>>
>>>Pedro Jares, Ph.D.
>>>Genomics Unit, IDIBAPS
>>>Barcelona University
>>>C/ Villarroel 170, 
>>>08036 .Barcelona, Spain
>>>Telf. 93 2275400,
>>>Ext 2184 o 2129
>>>Fax 93 2275717
>>>
>>>______________________________________________
>>>R-help at stat.math.ethz.ch mailing list
>>>https://www.stat.math.ethz.ch/mailman/listinfo/r-help
>>>PLEASE do read the posting guide!
http://www.R-project.org/posting-guide.html


Dipl. bio-chem. Eryk Witold Wolski    @    MPI-Moleculare Genetic   
Ihnestrasse 63-73 14195 Berlin       'v'    
tel: 0049-30-83875219               /   \    
mail: wolski at molgen.mpg.de        ---W-W----   
http://www.molgen.mpg.de/~wolski