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Algorithm Configuration Options
The program_options configuration file currently controls the algorithm selected by the value of AlgoCode set.
On 2009/07/08 20:54 the possible values for AlgoCode are:
| AlgoCode | Description | Status |
|---|---|---|
| 1 | Redistribute accumulated precipitation. | OK |
| 2 | Generate variability parameters. | Development. |
| 3 | General interpolation in both time and space and estimate a modelled value | Development |
| 4 | Temporal interpolation for “one-point” gaps (fill in missing values). | Development |
| 5 | Perform only an interpolation. | For testing and quality control. |
| 6 | Null call … does nothing. | For testing only. |
| other | Other values are handled gracefully and no algorithm initiated. | OK |
Temporal interpolation for "one-point" gaps
Algorithm location in kvalobs distribution: src/kvQc2/algoithms/ProcessUnitT
Currently configured for hourly temperature values:
- Locates a single missing value
- Checks if data available immediately before and after the interval
- If available generates first estimate from linear interpolation
- Checks for the Max and Min temperature for the missing value from the measurements registered in the hour afterwards
- Performs a second estimate as the average of 0.5*(MaxT + MinT)
TBD … add logic to propose best model value …
General interpolation in both time and space and estimate a modelled value
This is a generalisation of processUnitT and identifies a gap of arbitrary length in a time series and identifies valid points before and after the gap up until the next gap on either side. This provides a small time series (with missing values) upon which the most appropriate temporal (and spatial … taking into account neighbours) may be applied.
src/kvQc2/algorithms/Process4D.cc
