The
Filter to Include Observations
field is an optional
parameter that enables you to subset an input data set. Only those
observations
that meet all of the conditions specified in the field are included in the analysis.
For example, to filter only
chromosome
3 observations from a data set containing observations on multiple chromosomes (as indicated in a column named
seqname
), you could use the following simple WHERE expression:
Note:
The word
where
has already been entered for you.