KERNEL -Divides the raster into equal sized tiles based on the thinning value, then selects one or two cells which meet the criteria defined by the designated kernel method.When selecting this method, the thinning value defaults to one tenth of the z range of the input raster. The corresponding value reflects the maximum allowable difference in z units between the input raster and the surface created from the output multipoint feature class. ZTOLERANCE -Only exports the cells that are required for maintaining a surface within the specified Z-range of the input raster.The thinning method applied to the input raster to select a subset of cells that will be exported to the multipoint feature class. Syntax (in_raster, out_feature_class, ) Parameter Use the VIP Histogram option as an initial step to apply the VIP thinning method, as it produces a histogram of the significance scores that lets you know the number of points that would be selected with each incrementing percentile value.However, it is sensitive to noise and may ignore topographic features that span an extent that is larger than the 3 cell by 3 cell area. This method is relatively fast, outputs a predictable number of points, and is good at selecting local peaks and pits. Use the VIP thinning method if the resulting multipoints will be primarily applied for visualization applications.Use the Kernel thinning method when it is important to control the horizontal sample distance.Use the Z Tolerance thinning method when it is important to preserve vertical accuracy.When the input raster is very large in size, consider applying a thinning method to reduce the number of cells that get exported to the multipoint feature class. UsageĬonsider using this tool if you have raster elevation data and require access to the functional capabilities provided by a triangulated surface, as multipoint features can be loaded into a TIN or Terrain dataset.
Converts raster cell centers into 3D multipoint features whose Z values reflect the raster cell value.
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