SNP

A SNP file (.snp) is a tab-delimited text file that contains SNP array data. The SNP file format is described on the GenePattern web site: http://www.broadinstitute.org/cancer/software/genepattern/gp_guides/file-formats/sections/snp.

Zero-based index: Physical positions are identified using a zero-based index.

Display settings: To modify IGV's default display settings for the SNP data, include a track line in the file.