Returns a string that describes the filter as source. The
filter will be contained in a class with the given name (there may
be auxiliary classes),
and will contain two methods with these signatures:
// converts one row
public static Object[] filter(Object[] i);
// converts a full dataset (first dimension is row index)
public static Object[][] filter(Object[][] i);
where the array
i
contains elements that are either
Double, String, with missing values represented as null. The generated
code is public domain and comes with no warranty.