Available since 2022.01.

The transformation selects a single layer from a scalarmap time series, based on the layer index.

Input: a single scalar-map time series

output: a single scalar time series

layerIndex: the numbering of the layers starts with 1. Should be a positive integer, no greater than the number of layers available.

Config example:

<transformationModule version="1.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.wldelft.nl/fews"
					  xsi:schemaLocation="http://www.wldelft.nl/fews http://fews.wldelft.nl/schemas/version1.0/transformationModule.xsd">

	<variable>
		<variableId>input</variableId>
		<timeSeriesSet>
			<moduleInstanceId>SelectionScalarTimeSeriesLayersFromScalarMapFunctionTest</moduleInstanceId>
			<valueType>scalar</valueType>
			<parameterId>variable</parameterId>
			<domainParameterId>H.obs</domainParameterId>
			<locationId>H-2001</locationId>
			<timeSeriesType>external historical</timeSeriesType>
			<timeStep unit="day"></timeStep>
			<relativeViewPeriod unit="day" start="-1" end="10"/>
			<readWriteMode>add originals</readWriteMode>
		</timeSeriesSet>
	</variable>
	<variable>
		<variableId>output</variableId>
		<timeSeriesSet>
			<moduleInstanceId>SelectionScalarTimeSeriesLayersFromScalarMapFunctionTest</moduleInstanceId>
			<valueType>scalar</valueType>
			<parameterId>variable</parameterId>
			<locationId>H-2001</locationId>
			<timeSeriesType>external historical</timeSeriesType>
			<timeStep unit="day"></timeStep>
			<relativeViewPeriod unit="day" start="-1" end="10"/>
			<readWriteMode>add originals</readWriteMode>
		</timeSeriesSet>
	</variable>
	<transformation id="SelectionScalarTimeSeriesLayerFromScalarMapFunctionTest">
		<selection>
			<selectionScalarTimeSeriesLayersFromScalarMap>
				<input>
					<variableId>input</variableId>
				</input>
				<layerIndex>2</layerIndex>
				<output>
					<variableId>output</variableId>
				</output>
			</selectionScalarTimeSeriesLayersFromScalarMap>
		</selection>
	</transformation>
</transformationModule>


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