While we're talking about this, is it possible to upload a bigWig file 
into custom tracks using the same mechanism as a wig file, or must the 
file be on a remote server and accessed through a URL?

Hiram Clawson wrote:
> Good Morning David:
> 
> Are you talking about the database contents of
> the wiggle data, or the source ascii files that
> are given to wigEncode ?
> 
> If they are just the source ascii files, they
> can all go together with 'cat':
> $ cat files*.wig > result.wig
> 
> If they have custom track and browser lines in them:
> $ egrep -v "^track|^browser" files*.wig > result.wig
> 
> Or, all these can be sent into wigEncode:
> $ egrep -v "^track|^browser" files*.wig | wigEncode stdin result.wig 
> result.wib
> 
> We now try to distinguish source files with the suffix:
>     .wigFixed or .wigVar
> for fixedStep or variableStep wiggle ascii data.
> 
> You may also be interested in the more efficient
> encoding mechanism of wigToBigWig and the resulting .bw
> file which can be a URL resource.  See also:
> http://genome.ucsc.edu/goldenPath/help/bigWig.html
> This encoder works for bedGraph file types too and is
> much more efficient:
> http://genome.ucsc.edu/goldenPath/help/bedgraph.html
> 
> --Hiram
> 
> David Hoover wrote:
>> I have multiple .wig files, one for each chromosome.  Is there source 
>> code for an executable to concatenate the .wig files into a single 
>> .wig file?
>>
>> David Hoover
>> Helix Systems Staff
>> http://helix.nih.gov
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