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Complementary to the definition of the types of thresholds identified, the values of the thresholds are defined in the ThresholdValueSets configuration (ThresholdValueSets.xml on a local filesystem).

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EventTypeIds (otherwise known as EventCodes) are used as a prefix in logging messages for the MC to identify which threshold is crossed. When threshold messages need to be logged, a special predefined threshod activity is required in the workflows. 

<levelThresholdValue>
			<levelThresholdId>UKV</levelThresholdId>
			<valueFunction>1</valueFunction>
			<upActionLogEventTypeId>UKVRRCThreshold.crossed</upActionLogEventTypeId>
		</levelThresholdValue>

ThresholdValueSet Schema

The latest version of the ThresholdValueSet schema can be found on the Deltares schema site: http://fews.wldelft.nl/schemas/version1.0/thresholdValueSets.xsd. The elements in the schema are shortly described below.

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One or more qualifier ids the used rating curve should have all 

ThresholdValueSetSequence

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Specific values for max thresholds.

levelThresholdValue

levelThresholdId

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ID of the action message (=additional log.message) that must be logged if a threshold value is crossed DOWN. This id has to contain a dot, because the action event is only visible to the master controller if this id contains a dot, e.g. "Threshold_Name.Down". The event code need not be unique. 

rateThresholdValue

rateThresholdId

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<?xml version="1.0" encoding="UTF-8"?>
<!-- edited with XMLSPY v5 rel. 4 U (http://www.xmlspy.com) by Juzer Dhondia (WL | Delft Hydraulics) -->
<!--Sample XML file generated by XMLSPY v5 rel. 4 U (http://www.xmlspy.com)-->
<locationSets xmlns="http://www.wldelft.nl/fews"
           xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
           xsi:schemaLocation="http://www.wldelft.nl/fews httphttps://fewsfewsdocs.wldelftdeltares.nl/schemas/version1.0/locationSets.xsd" version="1.1">
  <locationSet id="MultiValuedAttributePeakHeights">
   <csvFile>
      <file>MultiValuedAttributePeakHeightsLocations.csv</file>
      <geoDatum>WGS 1984</geoDatum>
      <id>%ID%</id>
      <name>%NAME%</name>
      <x>%X%</x>
      <y>%Y%</y>
      <z>0</z>
      <attributeFile>
         <csvFile>MultiValuedAttributePeakHeightsLocationAttributes.csv</csvFile>
         <id>%ID%</id>
         <dateTimePattern>dd-MM-yyyy</dateTimePattern>
         <attribute id="PEAK_HEIGHT_PAR">
            <text>%PAR%</text>
         </attribute>
         <attribute id="PEAK_HEIGHT_TIME">
            <dateTime>%TIME%</dateTime>
         </attribute>
         <attribute id="PEAK_HEIGHT_VALUE">
            <number>%VALUE%</number>
         </attribute>
         <attribute id="PEAK_HEIGHT_ENABLED">
            <boolean>%ACTIVE%</boolean>
         </attribute>
      </attributeFile>
   </csvFile>
 </locationSet>
</locationSets>

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is used to log the info that the related forecast run was available within a certain time window when the observed threshold has been crossed.

deprecatedConversionChoice

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The aggregationLevelThresholdValues are used in the Spatial Display. When the accumulation slider computes new aggregated values, the correct thresholdvalue will be used for the aggregated time period.