# MetricMathAnomalyDetector
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Indicates the CloudWatch math expression that provides the time series the anomaly detector uses as input. The designated math expression must return a single time series.

## Contents
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 ** MetricDataQueries **   <a name="ACW-Type-MetricMathAnomalyDetector-MetricDataQueries"></a>
An array of metric data query structures that enables you to create an anomaly detector based on the result of a metric math expression. Each item in `MetricDataQueries` gets a metric or performs a math expression. One item in `MetricDataQueries` is the expression that provides the time series that the anomaly detector uses as input. Designate the expression by setting `ReturnData` to `true` for this object in the array. For all other expressions and metrics, set `ReturnData` to `false`. The designated expression must return a single time series.  
Type: Array of [MetricDataQuery](API_MetricDataQuery.md) objects  
Required: No

## See Also
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For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/monitoring-2010-08-01/MetricMathAnomalyDetector) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/monitoring-2010-08-01/MetricMathAnomalyDetector) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/monitoring-2010-08-01/MetricMathAnomalyDetector)