[Genome] BLAT output format

[Morgane THOMAS-CHOLLIER]

Hello,

I'm writing concerning the BLAT ouput formats. I have noticed that the 
chromosomal positions displayed in the psl format have an additional 
nucleotide, compared to the hyperlink format.

For instance, when querying BLAT with this mouse sequence,

tgctgaggaagcctacaccagaacttgcaagtggcttgcaTGATGGATGGGctggtggatagatggatggatgggcttggagacagatgga

I obtain with hyperlink:

          91     1    91    91 100.0%     4   -  140565363 140565453     91


But I obtain with psl:

	91	0	91	chr4		140565362	140565453


The start positions are not the same, and the psl format have an 
additional nucleotide.

Is there a specific reason for this difference ?

Thank you in advance for your answer,

Best regards,

Morgane Thomas-Chollier.

-- 
**********************************************************
Morgane THOMAS-CHOLLIER, PHD Student (mthomasc at vub.ac.be)

Vrije Universiteit Brussels (VUB)
Laboratory of Cell Genetics
Pleinlaan 2
1050 Brussels
Belgium