Make a text file for your long-range interaction data with following columns:
- chromosome name
- start coordinate
- stop coordinate
- information about the interacting region (e.g. chrX:123-456,3.14, where "chrX:123-456" is the coordinate of the mate, and "3.14" is the score of the interaction)
- ID (unique non-negative integer)
- relative direction of the interacting region
Be sure to make TWO records for a pair of interacting loci, one record for each locus.
As an example, interval "chr1:111-222" interacts with interval "chr2:333-444" on a score of 55, we will use following two lines to represent this interaction:
chr1 \t 111 \t 222 \t chr2:333-444,55 \t 1 \t . chr2 \t 333 \t 444 \t chr1:111-222,55 \t 2 \t .
Compress and index this file:
bgzip interaction.txt tabix -p bed interaction.txt.gz
Put the two files "interaction.txt.gz" and "interaction.txt.gz.tbi" on a web server. Two files must be in the same directory. Obtain the URL for file "interaction.txt.gz" for displaying on the Browser.