I think the BedGraph Track Format may be fit for me.

Because my dataset is also like this:

chromA  +  startposition1  end position1 dataValue1   experiment1
chromA  -  startposition2  end position2 dataValue2   experiment1
....
chromB  + startposition2  end position2 dataValue2   experiment1
chromB  -  startposition2  end position2 dataValue2   experiment1
.....

chromA  + startposition1  end position1 dataValue1   experiment2
chromA  - startposition2  end position2 dataValue2   experiment2
....
chromB   + startposition2  end position2 dataValue2   experiment2
chromB   - startposition2  end position2 dataValue2   experiment2
.....
I also have several experiment for different chromosome.  Can I put
them in one file?
In addition, I have different value for the (+/-) strand for the same
chromosome, Can I draw them in one graph, the +strand is on the top
and - strand is on the below?

In additon, I don't know if I use the BedGraph format file, I should
use which demand to store this file into my mysql database? Like for
example, like for the wig format, in the final gff3 file, we can add
this:
ctgA    .       microarray_oligo        1       50000   .       .       .       
Name=example;wigfile=/var/www/gbrowse2/databases/volvox

Do I need to convert the bedgraph file into gff3 file?

Thanks!

jingjing
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