Sigma Online User Manual
Resolution Logic for Data Gaps or Overdue Data
When resolving Data Gaps or Overdue Data Notifications using the available capability, the following methods are used when calculating the data that should be used to fill the gaps or extend the data.
Condition | Applicable Strategy Type | Fill Method | Number of Weeks |
---|---|---|---|
Interval Data Periodic Channel The periodic channel is configured as Non Meter Reading and each interval represents the consumption in that time period. | Data Gaps and Overdue Data | Period Average The system will...
Example If you specify 4 weeks, Sigma will calculate an averaged value to use based on the data for the equivalent time period in the last 4 weeks. Example scenario: if a half hour gap is detected on a Monday morning at 8am, Sigma will look at the previous 4 Mondays at 8am and use an average of those to fill the gap. When performing the calculation:
| Defaults to 4 Weeks |
Meter Reading Periodic Channel The periodic channel is configured as Meter Reading and each interval represents the advance since the last reading. | Data Gaps | Interpolation The system will...
Example The data should be received every half-hour and there is a gap for two half-hour periods.
Here, the readings for 07:30 and 08:00 are missing. The system determines that the difference between the pre (07:00) and post (08:30) readings is 60 units (110 - 50). This 60 units is then apportioned to work out what the advance needs to be for the two missing half-hour periods:
Here, the 20 units is added on from the prior read to fill the first missing half-hour. The 20 units is then added again to fill the second missing half-hour, and then 20 units added so that it will equal the first actual reading after the gap. | N/A |
Overdue Data | The system will apply the Period Average logic above, to fill the overdue period with estimated data based on the historical average for the equivalent periods of time. | Defaults to 4 Weeks |
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