Implementing spatial interpolation with stream


Temperature interpolated by the stream operator.

Peter implemented a generic C++ primary operator for the IBM Infosphere Stream Processing platform for spatial interpolation of RISERnet data. The incoming RISERnet point data is interpolated to a regular grid in real time by this interpolator. The new stream operator is based on tumbling window-event handlers and supports algorithms which includes inverse distance weighting (IDW), natural neighbour interpolation, and thin plane spline. In the future, further interpolation algorithms such as Kriging and GWR (geographically weighted regression) are planned.

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