R help - Jun 2000 - Binary file input to R

I suspect that the recent queries about reading database files into R 
implicitely answered my question here, but I'll ask anyway.

Are there any native binary file read routines in R?

I need to a binary data file consisting of 2 byte records, strip off the 
upper 6 bits (using a logical AND, leaving a ten bit word), and then write 
the ten bit number in text form for R.

Assuming that R can't do this, is PERL appropriate?

Thanks.

Derek N. Eder
G?teborg University                                 (privat)
Institute of Clinical Neuroscience,        Landerigatan 2
Section of Psychiatry                              SE 416 70
SU/Sahlgrenska University Hospital    G?teborg, Sweden
SE 413 45 G?teborg, Sweden               tlf +46 (31) 25 40 66

tlf: +46 (31) 34 - 26139
fax: +46 (31) 3182 8163
derek.eder at neuroscience.gu.se


  

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On Tue, 6 Jun 2000, Derek N. Eder wrote:
> I suspect that the recent queries about reading database files into R 
> implicitely answered my question here, but I'll ask anyway.
> 
> Are there any native binary file read routines in R?
Not general-purpose ones. There are some routines in packages to read
specific types of binary file (eg Stata .dta files).  
> I need to a binary data file consisting of 2 byte records, strip off the 
> upper 6 bits (using a logical AND, leaving a ten bit word), and then write 
> the ten bit number in text form for R.
You could program this in C and call it from R, bypassing the text
conversion. Perl might well work, but you would probably get more reliable
information from a perl list than from us.

	-thomas 

Thomas Lumley
Assistant Professor, Biostatistics
University of Washington, Seattle

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