Hello, Chris.

I loaded your sample data as a custom track and experienced the same issue
you reported.  This appears to be a bug.  Thank you for bringing this to our
attention.  One of our developers will look into this issue.

Please contact us again at [email protected] if you have any further
questions.

---
Steve Heitner
UCSC Genome Bioinformatics Group

-----Original Message-----
From: [email protected] [mailto:[email protected]] On
Behalf Of Davies, Christopher
Sent: Tuesday, March 27, 2012 6:45 PM
To: '[email protected]'
Subject: [Genome] Zero-length items in custom track generating errors

Hi All,
 I'm having an issue in the UCSC Browser with my custom bed files, that I
don't think I've seen before....
(Human, hg19, Firefox)

If I upload this file: (Or paste it into the browser  ....  you'll need to
convert the spaces back to tabs)
track   name=test3      description=test3
chr1    111739765       111739766       AX-11111111_T/G_trueSNP
chr1    111739771       111739771       AX-83064695_-/CAGGACAAA_deletion
chr1    111739775       111739778       AX-33333333_-/CCC_insertion
chr1    111739780       111739781       AX-44444444_-/A-insertion

All the snps appear normal in the browser, (and have the right length,
including an inter-base tick mark for AX-83064695) BUT (e.g. in 'pack' mode)
when I click on the ID of the snp AX-83064695 it get the following error
message:

"Couldn't find AX-83064695_-/CAGGACAAA_deletion@chr1:111739771 in
../trash/ct/ct_genome_4f0d_e3c30.bed"

The other snps work fine.
This happens only for zero-length snps (all of them!), i.e. where hg19 has
the deletion allele.
(i.e they map to the inter-base location, so the start and stop are the same
integer).
Note that in the dbSNP153 track, at this location, rs3833538 displays just
fine as an inter-base 'tick' mark, and it's details link is also functional.



If I use 9-column format, so that I can use the itemRgb, then it gets
weirder.
Example:
track   name=temp4      description=temp4       itemRgb=On
chr1    111739771       111739771       AX-83064695_-/CAGGACAAA  0       +
111739771       111739771       0,0,0

Now the interbase tick-mark is not even displayed in the browser. If I use
'pack' mode, then I can see the annotation, but not the tick-mark. If I
click on the annotation, I get the same (above) error message.

Is this a (new?) bug, or am I now doing something wrong? This used to work
for me, I swear...


Thanks!
 -chris davies



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