Hello,
Would you be able to confirm that the data was converted from the (-) 
strand to the (+) strand understanding our data formatting rules?
http://genomewiki.ucsc.edu/index.php/Coordinate_Transforms

If so, please send me an example from this track that you believe is a 
problem (genomic coordinates plus unique data label) and we will examine 
the test case and provide feedback.

Jennifer Jackson
UCSC Genome Bioinformatics Group

ahyiu wrote:
> Dear Sir/Madam,
> I've downloaded the datafile of hg18.snpArrayIllumina1M from table browser 
> under groups: Variation and repeats, track: SNP arrays, table Illumina 1M-Duo 
> (snpArrayIllumina1M) from your database. I would like to know whether you can 
> provide the TOP/BOT annotation adopted by Illumina. Because when I flipped 
> all 
> SNPs in the negative strand to positive strand, it is not compatible with the 
> HAPMAP data. I am wondering whether I've done something wrong or I 
> misunderstand the datafile.
>
> Best wishes,
> Lee, Yiu-Fai
>
>
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