IInterpolationOp3.Trend Method

Interpolates using trend surface.

[Visual Basic .NET]
Public Function Trend ( _
    ByVal geoData As IGeoDataset, _
    ByVal trendType As esriGeoAnalysisTrendEnum, _
    ByVal order As Integer _
) As IGeoDataset

[C#]
public IGeoDataset Trend (
    IGeoDataset geoData,
    esriGeoAnalysisTrendEnum trendType,
    int order
);

[C++]
HRESULT Trend(
  IGeoDataset* geoData,
  esriGeoAnalysisTrendEnum trendType,
  long order,
  IGeoDataset** interpolatedRaster
);

[C++]
Parameters
geoData [in]
  geoData is a parameter of type IGeoDataset
trendType [in]
  trendType is a parameter of type esriGeoAnalysisTrendEnum
order [in]
  order is a parameter of type long
interpolatedRaster [out, retval]
  interpolatedRaster is a parameter of type IGeoDataset

Product Availability

Remarks

geoData	an input point featureclass containing the points with z values to be interpolated onto a surface Raster
trendType	an esriGeoAnalysisTrendEnum specifying the type of regression to be performed esriGeoAnalysisLinearTrend polynomial regression is performed to fit a least-squares surface to the set of input points It is applicable for continuous types of data. esriGeoAnalysisLogisticTrend logistic trend surface analysis is performed It generates a continuous probability surface for binary, or dichotomous, types of data.
order	order of the polynomial It must be an integer value 1 through 12. A value of 1 will fit a flat plane to the points, and a higher value will fit a more complex surface. A commonly used value is 1.

See Also