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howtos:toolcoding:many_to_one_mapping_with_non_summation_aggregation_rule

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The map tool can perform an index mapping in which multiple elements of informant X are mapped to the same element of informant Y. To aggregate multiple elements into one, the map tool sums the values of the composite elements. However, there may be a need to use a different aggregation function such as minimum, maximum, or average. The following code demonstrates how to implement this logic.



                    
                                    
howtos/toolcoding/many_to_one_mapping_with_non_summation_aggregation_rule.1271792249.txt.gz · Last modified: 2010/04/20 19:37 by deryn.crockett