subset ballgown objects to specific samples or genomic locations
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a ballgown object
further arguments to generic subset
Condition on which to subset. See details.
if TRUE, subset
subset, you must provide the
cond argument as a
string representing a logical expression specifying your desired subset.
The subset expression can either involve column names of
texpr(x, "all") (if
TRUE) or of
FALSE). For example, if
you wanted a ballgown object for only chromosome 22, you might call
subset(x, "chr == 'chr22'"). (Be sure to handle quotes within
character strings appropriately).
a subsetted ballgown object, containing only the regions or samples
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