Filter to Include Annotation Rows

The Filter to Include Annotation Rows field is an optional parameter that enables you to subset an {link}{Emphasis}Annotation SAS Data Set. You can type one or more statements (joined by AND or OR) here to filter annotation rows before merging: only rows that meet the condition(s) specified 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:

WHERE seqname = ‘chr3’

Note: the word where has already been entered for you.

For more information about using filter fields, see The SAS WHERE Expression.