[R] Export data frame of high dimension to txt

[Allan Engelhardt]

On 01/07/10 08:50, Loukia Spin. wrote:
> I managed with success to export a data frame of 367 columns and 37 rows to a txt file, but unfortunately I couldn't manage the same with the transposed data frame. Specifically, it seems like the notebook cannot "read" correctly 367 columns, so it reads the first 145 columns and it folds down the rest of them and consequently it folds down the respective data.
>
> f=format.data.frame(rev,trim=F,digits=NULL,nsmall=3, ## rev is the data frame of 37 rows and 367 columns ##
> justify="centre",zero.print=F,drop0trailing=T);f
>    
I am not sure why you want to call format.data.frame first? A simple 
write.table(rev, ...) should work fine.  As it stands, write.table will 
convert f back to a data.frame before writing
> write.table(f,file="C:/Program Files/R/R-2.11.0/genes as rows.txt",
> row.names=T,sep="\t",quote=F,dec=".",col.names=NA,append=T)
>    
Careful with that append=TRUE.  Try it with FALSE (the default) to make 
sure the file really is empty.  It might simply be text at the beginning 
that trips up the subsequent read.table (which I am guessing from your 
description is where the problem occurs).

Hope this helps a little.

Allan