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Below the display of a constant value modifier is shown. Which is very similar to the display of single value modifier.
Note however that this modifier has a start and an end time. The constant value of the modifier can be specified in the
text box or with the slider. The period can be defined by using the start and end date boxes.

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Schema

Below the schema of the constant value modifier.

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The default start time of the modifier can be defined here.

Possible options are:

• startrun
• time zero

defaultendtime

The default end time of the modifier can be defined here.

Possible options are:

• time zero
• end run

defaultvalue

A default value can be defined here.

Configuration example

Below an example configuration of a constant value modifer is shown.

<constantValueModifier id="mfc" name="MFC">
	<timeSeries>
		<parameterId>MFC</parameterId>
	</timeSeries>
	<softLimits>
		<maximumValue>10</maximumValue>
		<minimumValue>0</minimumValue>
	</softLimits>
	<defaultStartTime>start run</defaultStartTime>
	<defaultEndTime>end run</defaultEndTime>
	<defaultValue>1</defaultValue>
</constantValueModifier>

The only difference in the configuration of a This id of this instance of the constant value modifier and a single value modifier is that a default start- and endtime should be configured instead of default time.

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is mfc and its name is MFC. It will only be applied to time series which have the parameterid MFC because the

a timeseries-filter with parameterid MFC is defined.

No hardlimits are defined but the softLimits are set to a range of 0-10. The slider will have a range of 0 till 10. But they can be overruled with entering a higher value in the

text box.

Enumeration modifiers

Enumeration modifiers are modifiers in which the user can select a fixed set of options from a drop down list.

An example of the use of the eneration modifier is the rain snow modifier from the NWS. In this modifier the forecaster can determine

Below an example of the display for an enumeration modifier.

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In this type of modifier the forecaster can select several options from a dropdownlist. Each option is translated to a certain value in the time series.
Below is an example of the configuration of an enumeration modifier.

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