[BioC] Is a number within a set of ranges?

Daniel Brewer daniel.brewer at icr.ac.uk
Tue Oct 30 10:29:39 CET 2007



Daniel Brewer wrote:
> I have a table with a start and stop column which defines a set of
> ranges.  I have another table with a list of genes with associated
> position.  What I would like to do is subset the gene table so it only
> contains genes whose position is within any of the ranges.  What is the
> best way to do this?  The only way I can think of is to construct a long
> list of conditions linked by ORs but I am sure there must be a better way.
> 
> Simple example:
> 
> Start	Stop
> 1	3
> 5	9
> 13	15
> 
> Gene	Position
> 1	14
> 2	4
> 3	10
> 4	6
> 
> I would like to get out:
> Gene	Position
> 1	14
> 4	6
> 
> Any ideas?
> 
> Thanks
> 
> Dan
> 

Thanks everyone for their ideas.  That is marvellous.

Dan

The Institute of Cancer Research: Royal Cancer Hospital, a charitable Company Limited by Guarantee, Registered in England under Company No. 534147 with its Registered Office at 123 Old Brompton Road, London SW7 3RP.

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