org.pmml4s.transformations
<DefineFunction name="SAS-FORMAT-$CHARw" optype="categorical" dataType="string"> <ParameterField name="FMTWIDTH" optype="continuous"/> <ParameterField name="AnyCInput" optype="continuous"/> <Apply function="substring"> <FieldRef field="AnyCInput"/> <Constant>1</Constant> <Constant>FMTWIDTH</Constant> </Apply> </DefineFunction>