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double-click 'Event Time' column and a pop-up will appear where the user can set the period for viewing threshold events.
Seasonal Threshold
Since 2018.02 thresholds can be made seasonal if a threshold is only valid for part of a year. When not configured the threshold is valid for the entire year.
| Code Block | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
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<thresholdGroup id="Waterlevel" name="Seasonal Thresholds">
<defaultThreshold shortName="None"/>
<levelThreshold id="River Alert" name="River Alert">
<upWarningLevelId>River Alert</upWarningLevelId>
</levelThreshold>
<levelThreshold id="Minor Flooding June" name="Minor Flooding June">
<upWarningLevelId>Minor Flooding</upWarningLevelId>
<season startMonthDay="--06-01" endMonthDay="--06-30"/>
</levelThreshold>
<levelThreshold id="Minor Flooding July" name="Minor Flooding July">
<upWarningLevelId>Minor Flooding</upWarningLevelId>
<season startMonthDay="--07-01" endMonthDay="--07-31"/>
</levelThreshold>
<levelThreshold id="Minor Flooding August" name="Minor Flooding August">
<upWarningLevelId>Minor Flooding</upWarningLevelId>
<season startMonthDay="--08-01" endMonthDay="--08-31"/>
</levelThreshold>
</thresholdGroup> |
When a threshold is seasonal and drawn in the graph, the part of the threshold that is out of season is drawn in light grey to illustrate it is not valid. If the entire view period is out of season the theshold line will not be drawn at all.
If a threshold is crossed at system time and the system time is within the season of the threshold, the crossing will be taken into account.
If threshold icons are turned on in the explorer a warning icon will be shown in the data viewer:
If a threshold is crossed at system time and the system time is NOT within the season of the threshold, the crossing will not be taken into account.
This is illustrated in the next picture where no warning overlay icon will be drawn:
