Thanks for your answer.
However, when I followed your instructions, I found that the forth
column in my dataset, which is the expression level (or base depth
covered by short read sequences), would be treated as names instead of
values. Therefore I cannot see histogram on UCSC genome browser..
Could you help me more about the question? Thanks a lot!
Please see the following link to view my dataset.
Subject: Re: [galaxy-user] BedGraph format
A file in bedgraph format should display at UCSC. I think that #3
(below) is your concern, but there are a few things to check if the
display at UCSC link is not showing up for the dataset:
1. File is tab delimited (not space or other) and four columns, such
as (from the UCSC web site's example:
chr19 59302000 59302300 -1.0
chr19 59302300 59302600 -0.75
chr19 59302600 59302900 -0.50
chr19 59302900 59303200 -0.25
chr19 59303200 59303500 0.0
chr19 59303500 59303800 0.25
2. Use "Edit Attributes" to assign a database (click on pencil icon in
dataset). Confirm that this database is at UCSC by matching the
database short name "dbkey" with that used in Galaxy. If the database
is not at UCSC, then Visualization within Galaxy is still an option
You can pull in other tracks from UCSC or other sources to view all of
the data together for custom genomes.
3. Use "Edit Attributes" to also assign the file format as "bedgraph".
The metadata will be automatically detected. The fourth column is not
explicitly labeled as being a data value for display, but that does
not impact display. Not all values for all datatypes are labeled the
same as external sites do, yet many display correctly based on the
file format type assigned.
4. Optional: create a track line using "Graph/Display Data -> Build
custom track for UCSC genome browser". This is not necessary, but does
allow for some user-defined labels. For full control over the track
and (again, optional) browser lines used by UCSC, create this
information in a text file on your computer, save, load into Galaxy,
and merge with the bedgraph data using "Text Manipulation ->
Concatenate datasets tail-to-head".
If this does not help and you are still having issues on the public
Galaxy server at http://usegalaxy.org
, please send a shared history
link and I can take a look and provide feedback ("Options -> Share or
Publish, generate link, and email back directly to me). But, hopefully
the above helps to resolve anything that was unclear. I just tested a
bedgraph a few minutes ago, to confirm that there were no issue
between Galaxy & UCSC for a sample bedgraph dataset, and it worked