[BioC] build BPMAP File

Mark Robinson mrobinson at wehi.EDU.AU
Fri Dec 5 01:48:47 CET 2008

Hi Arnaud.

I suspect the 'writeTpmap' and 'tpmap2bpmap' functions in the  
'affxparser' package would be useful for this, though I haven't done  
it myself ...

 > library(affxparser)
 > ?tpmap2bpmap
 > ?writeTpmap

You can use 'readBpmap' to read in your original BPMAP file into a list.


On 05/12/2008, at 7:56 AM, Droit Arnaud wrote:

> Hello all,
> I have a BPMAP file (89 Mo) and the size is too big for the  
> bioconductor’s guideline. I have some alternative as to create a  
> separate package for the data.
> But, first, I am thinking to reduce the size of the file by removing  
> data from the BPMAP file.
> I want to extract data from BPMAP file (e.g. all data for chr1) and  
> rebuild BPMAP file with only data from chr1,
> and I am just wondering if anyone knows if it is possible to rebuild  
> BPMAP files.
> Thank you
> Arnaud Droit.
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Mark Robinson
Epigenetics Laboratory, Garvan
Bioinformatics Division, WEHI
e: m.robinson at garvan.org.au
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