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What | Required | Description | schema location |
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ValidationRulesets.xml | no | Definition of validation rule sets | http://fews.wldelft.nl/schemas/version1.0/validationRuleSets.xsd |
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Figure 36 Elements of the same reading configuration of the ValidationRuleSets.
SameReadingViolations are marked as such if values stay within the sameReadingDeviation for at least the sameReadingPeriod. The way the check is applied is by having each value in the timeSeries be considered as potential start of a period in which the reading will be the same.
For each non missing value (start value) a check on the timeSeries is applied as follows. After the start value, each non missing value is compared to the start value to see if the absolute difference is no more then the sameReadingDeviation. If it's equal to or less than the sameReadingDeviation, the value is considered to be within the bandwidth and the check is continued. If not (or if it was the last non missing value of the timeSeries), the check is stopped. If the time between the start value and the last value inside the bandwidth is equal to or greater than the sameReadingPeriod, all non missing values from the start value up to (and including) the last value are marked sameReading (SR).
After this, the check is applied to the first non missing value after, what was considered in the last check as, starting value (even if it is already marked as sameReading).
sameReadingDeviation
Root element for definition of bandwidth the value may vary within if it is considered to the same reading. The bandwidth is twice the deviation.
Attributes;
- constantValue: Value for deviation (inclusive), used irrespective of date of the value.
sameReadingPeriod
Root element for definition of time span limit the value may remain the same to be considered realistic. If the reading remains the same for a longer period of time, ensuing values will be considered unreliable.
Attributes;
- constantValue: Value for time span in seconds (exclusive), used irrespective of date of the value.
monthLimit
Element used when defining variable limits per calendar month. Twelve values must be defined. When defined the monthly limit will overrule the constant limit.
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