The
Filter to Include Markers
field is an optional parameter that
enables you to subset both the
Input SAS Data Set
and
Annotation SAS Data Set
based on values of
variables
in the
annotation data set
. Only those markers that meet all of the specified conditions are included, in both the annotation data set and the corresponding marker columns in the input data set.
For example, to filter only diseased individuals from a data set containing a mixed
population
of diseased (sick) and healthy (healthy) individuals (as indicated in a column named
DiseaseStatus
), you could use the following simple WHERE expression:
Note:
the word
where
has already been entered for you.