howtos:toolcoding:many_to_one_mapping_with_non_summation_aggregation_rule
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howtos:toolcoding:many_to_one_mapping_with_non_summation_aggregation_rule [2010/04/23 18:23] deryn.crockett |
howtos:toolcoding:many_to_one_mapping_with_non_summation_aggregation_rule [2010/04/23 18:24] deryn.crockett |
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| + | ====== Many to One Mapping with Non-Summation Aggregation Rule ====== | ||
| 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 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. | ||
howtos/toolcoding/many_to_one_mapping_with_non_summation_aggregation_rule.txt ยท Last modified: 2011/06/13 16:20 by chris.strashok
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