R help - Mar 2007 - reading raw matrix saved with writeBin

Um texto embutido e sem conjunto de caracteres especificado associado...
Nome: n?o dispon?vel
Url:
https://stat.ethz.ch/pipermail/r-help/attachments/20070314/9445b873/attachment.pl

On Wed, 14 Mar 2007 18:45:53 -0700 (PDT) Milton Cezar Ribeiro <milton_ruser
at yahoo.com.br> wrote:
> Dear Friends,
> 
> I saved a matrix - which contans values 0 and 1 - using following command:
> writeBin (as.integer(mymatrix), "myfile.raw",  size=1).
> 
> It is working fine and I can see the matrix using photoshop. But now I need
> read the matrices again (in fact I have a thousand of them) as matrix into
R but when
> I try something like  mat.dat<-readBin ("myfile.raw",size=1) I
can?t access the
> matrix
> 
> Kind regards,
> 
> Miltinho
> 
> __________________________________________________
> 
> 
> 	[[alternative HTML version deleted]]
> 
Look up the help file. There is an explicit example. Basically, you need to tell
the file to read in binary.

In fact, I am a little surprised your first command works while writing.

HTH!
Ranjan

FYI, to save data as bitmap images, see the EBImage package on Bioconductor.

/H

On 3/15/07, Ranjan Maitra <maitra at iastate.edu>
wrote:
> On Wed, 14 Mar 2007 18:45:53 -0700 (PDT) Milton Cezar Ribeiro
<milton_ruser at yahoo.com.br> wrote:
>
> > Dear Friends,
> >
> > I saved a matrix - which contans values 0 and 1 - using following
command:
> > writeBin (as.integer(mymatrix), "myfile.raw",  size=1).
> >
> > It is working fine and I can see the matrix using photoshop. But now I
need
> > read the matrices again (in fact I have a thousand of them) as matrix
into R but when
> > I try something like  mat.dat<-readBin
("myfile.raw",size=1) I can?t access the
> > matrix
> >
> > Kind regards,
> >
> > Miltinho
> >
> > __________________________________________________
> >
> >
> >       [[alternative HTML version deleted]]
> >
>
> Look up the help file. There is an explicit example. Basically, you need to
tell the file to read in binary.
>
> In fact, I am a little surprised your first command works while writing.
>
> HTH!
> Ranjan
>
> ______________________________________________
> 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
> and provide commented, minimal, self-contained, reproducible code.
>