GBrowse visualization

[cascoamarillo]

Hi,

In the GenomeBrowser 2.0, when I load my custom track (is this case is a BAM file) I can see the coverage and reads (when I zoom in); but I'm not able to diferenciate the reads that match the positive/negative strand (i.e. with different colors). I've tried to modify the config file without successful. This is what I got:

[mapping_sorted.bam]
feature   = coverage:2000
min_score    = 0
glyph        = wiggle_xyplot
height       = 200
fgcolor      = black
bgcolor      = black
autoscale    = local


[mapping_sorted.bam]
database = database_0 # do not change this!
feature      = read_pair
glyph        = segments
draw_target  = 1
show_mismatch = 1
mismatch_color = red
bgcolor      = blue
fgcolor      = blue
height       = 3
label        = 1
label density = 50
bump         = fast
key          = Shared track from http://mapping_sorted.bam

Any help?
Thanks

[ffinkernagel]

you need a callback for the bgcolor.
here's what I'm using
bgcolor = sub { my $f = shift; return 'purple' unless $f->type eq 'match'; return $f->reversed ? 'blue' : 'yellow'; }
which covers slightly more than just the forward/reversed case.