[BioC] Reading data from SMD database
Colin Smith
colin at colinsmith.org
Tue Feb 24 17:46:47 MET 2004
Aedin-
I played around with SMD import last summer and created a function that
much more intelligently imports data from the SMD. The interesting
thing about the "Excel" files you get from the SMD is that they aren't
actually Excel files. Instead, they are just text files. R can read
them just fine.
I unfortunately never got around to adding the function into
marrayInput. I haven't tested it since last summer so either the SMD or
marrayInput schemas may have changed a bit. I'd be happy to help you
debug/fix it if incompatibilities have crept in. You can download it
here:
http://www.colinsmith.org/~colin/read.SMD2.R
It tries to shoehorn as much information from the raw data files as
possible into the marray classes. The only thing it doesn't import is
the control spots because the SMD doesn't include that information in
their raw data files. The input is just a character vector of file
names. The files should have all used the same chip layout.
-Colin
On Feb 24, 2004, at 7:59, Aedin wrote:
> Date: Tue, 24 Feb 2004 13:58:45 +0000
> From: Aedin <aedin.culhane at ucd.ie>
> Subject: [BioC] Reading data from SMD database
> To: bioconductor at stat.math.ethz.ch
>
> Hi all,
> Whats the easiest way to read published data in the SMD database into
> R.
>
> The "raw data" from smd.stanford.edu seems to download as multiple
> excel
> files, which fail to be read into R if I use read.SMD(). Am I
> downloading
> the incorrect format file from SMD?
>
> Thanks so much for any help,
> Aedin
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