The
Filter to Include Markers
field is an optional parameter that
enables you to subset the markers before analysis based on values of
variables
in the
annotation data set
. Only those markers that meet all of the specified conditions, in both the annotation data set and the corresponding marker columns in the input data set, are included.
Note
: Unless you want to analyze a small subset out of the entire set of SNPs only, it is better to analyze the whole data set first and then filter the results.
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.