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Esri TIN elevation interpolation methods.
| Constant | Value | Description | 
|---|---|---|
| esriLinearInterpolation | 0 | Uses linear interpolation. | 
| esriNaturalNeighborInterpolation | 1 | Uses natural neighbor interpolation. | 
| esriNaturalNeighborZmin | 2 | Uses the minimum Z of all natural neighbor nodes. | 
| esriNaturalNeighborZmax | 3 | Uses the maximum Z of all natural neighbor nodes. | 
| esriNaturalNeighborZaverage | 4 | Uses the z closest to the average of all natural neighbor nodes. | 
| esriNaturalNeighborZnearest | 5 | Uses the Z value of the nearst node. | 
| esriNaturalNeighborIDW | 6 | Uses 'Inverse Distance Weight' based on natural neighbors. |