Since 2017.01 Replace values with NaN where water level is not higher that Z value of the grid.
Has optional element <minimumLocalWaterLevel>0.01</minimumLocalWaterLevel> to define the minimum water level in meters at a cell to not be considered dry. When the value at a cell is lower than the elevation (Z) + the minimum water level, it will be set to NaN in the output.
Example configuration for removeDryCells transformation
<?xml version="1.0" encoding="UTF-8"?>
<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>SampleToNonEquidistantMultipleForecastsTest</moduleInstanceId>
<valueType>grid</valueType>
<parameterId>H.merged</parameterId>
<locationId>XYZgrid</locationId>
<timeSeriesType>external historical</timeSeriesType>
<timeStep unit="nonequidistant"/>
<relativeViewPeriod unit="week" start="-5" end="0"/>
<readWriteMode>read complete forecast</readWriteMode>
</timeSeriesSet>
</variable>
<variable>
<variableId>output</variableId>
<timeSeriesSet>
<moduleInstanceId>SampleToNonEquidistantMultipleForecastsTest</moduleInstanceId>
<valueType>grid</valueType>
<parameterId>H.updated</parameterId>
<locationId>XYZgrid</locationId>
<timeSeriesType>external historical</timeSeriesType>
<timeStep unit="nonequidistant"/>
<relativeViewPeriod unit="week" start="-5" end="0"/>
<readWriteMode>add originals</readWriteMode>
</timeSeriesSet>
</variable>
<transformation id="NegativeZToNanTest">
<altitude>
<removeDryCells>
<inputVariable>
<variableId>input</variableId>
</inputVariable>
<minimumLocalWaterLevel>0.01</minimumLocalWaterLevel>
<outputVariable>
<variableId>output</variableId>
</outputVariable>
</removeDryCells>
</altitude>
</transformation>
</transformationModule>
