allNA                   A filter function to determine if all elements
                        of a vector are NA.
Anova                   A filter function for Analysis of Variance
coxfilter               A filter function for univariate Cox
                        regression.
cv                      A filter function for the coefficient of
                        variation.
eSetFilter              A function to filter an eSet object
filterfun               Creates a first FALSE exiting function from
                        the list of filter functions it is given.
gapFilter               A filter to select genes based on there being
                        a gap.
genefilter              A function to filter genes.
genefinder              Finds genes that have similar patterns of
                        expression.
genescale               Scales a matrix or vector.
kOverA                  A filter function for k elements larger than
                        A.
maxA                    A filter function to filter according to the
                        maximum.
pOverA                  A filter function to filter according to the
                        proportion of elements larger than A.
tdata                   A small test dataset of Affymetrix Expression
                        data.
ttest                   A filter function for a t.test
