Hello Alper,

The data display issue is most likely related to scale. If autoScaling 
is on, then smaller peaks will be reduced, possibly even to a single 
pixel, making them appear to "disappear". The solution is to control the 
scale yourself.

Track attributes such as windowingFunction, viewLimits, and autoScaling
can be manipulated to alter display. See a complete discussion of these
and other attributes here:
http://hgwdev.cse.ucsc.edu/~kent/src/unzipped/hg/makeDb/trackDb/

You might also consider a different graphing format, such as bedGraph, 
if the data covers only smaller regions.

http://genomewiki.ucsc.edu/index.php/Selecting_a_graphing_track_data_format

http://genome.ucsc.edu/goldenPath/help/hgWiggleTrackHelp.html

Previous answer that may also be helpful:
https://lists.soe.ucsc.edu/pipermail/genome-mirror/2009-June/001306.html
https://lists.soe.ucsc.edu/pipermail/genome/2010-January/020935.html

Please let us know if you need more assistance,
Jen

---------------------------------
Jennifer Jackson
UCSC Genome Informatics Group
http://genome.ucsc.edu/

On 3/31/10 12:35 PM, Alper Kucukural wrote:
> Hello,
> First of all, I would like to thank you for all of your efforts to make
> an extremely useful tool.
> I have a problem in wiggle plot that works on our mirror. I attached two
> small files to demonstrate the problem. First file chrV.wig.prep has one
> peak and peak height is around 20. The second file has (chrV.wig.prep.2)
> has two peaks including the peak in the first file. The distance in the
> peak regions is around 800 base.
> But here the height of first peak is over 100K and the second region is
> only 25. So, when I upload the first file, we see the whole region
> without any problem. But, in the second file, there is a problem in the
> second peak, it only shows after a part of the peak that is, I guess,
> after a certain distance from the first peak.
> Why are the small peaks deleted in the vicinity of huge peaks? Is it
> possible to show all the data?
>
> -----I am using the commands below to upload a wig file.
> I use wigEncode to make wib file.
> wigEncode chrV.wig.prep ex5.wig ex5.wib
> And load them to our mirror in to sacCer2 genome.
> hgLoadWiggle sacCer2 ex5 ex5.wig
> And copy the file into gbdb
> cp ex5.wib to /gbdb/sacCer2/wib/.
> And add a row to trackDB to show the track.
> ----
> Thanks in advance,
> Best,
> Alper Kucukural
>
>
>
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