Hi,
I've been doing some work with variableStep wiggle files and I have a
question I haven't been able to answer by referring to the specs (such
asĀ http://genome.ucsc.edu/goldenPath/help/wiggle.html ).
Specifically, I'm wondering if it is valid to have a value for the
span parameter which is larger than the distance between any of the
data points. For example, if the file included the declaration

variableStep chrom=chr2 span=5

would the following data be permissible?

300701 12.5
300704  20.1
300710   8.6

(Presumably, if it were, the 12.5 score would apply to bases 300701,
702, and 703, but it would be overridden by the 300704  20.1 line; so
704 - 708 would have score 20.1 )

I would greatly appreciate any clarification on this point.

Thank you very much!

- Ellen

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