Interpolation - IDW, Kriging, Natural Neighbor, Spline - ArcGIS

Interpolation method used to predict unknown values for any geographic point data, such as elevation, rainfall, chemical concentrations, noise levels, etc. In this Tutorial, Learn How to create an Interpolation in ArcGIS Software, Apply the 4 methods.

  1. IDW (Inverse distance weighting)
  2. Kriging
  3. Natural Neighbor
  4. Spline

Open a point Data in ArcMap, you can also add Area.

IDW

Inverse distance weighted (IDW) interpolation determines cell values using a linearly weighted combination of a set of sample points.

Interpolates a Raster surface from points using an IDW (Inverse Distance Weighted) technique.

Open ArcToolbox, expand Spatial Analyst Tool then expand Interpolation and select IDW.

IDW window appears select Input point features data(Interpolation_Data), Z value field select Elevation, then choose Output raster destination. Finally, click the OK button.

Now view to IDW result.

Kriging

Kriging is an advanced Geostatistical procedure that generates an estimated surface from a scattered set of points with Z-values.

Interpolates a Raster surface from points using an Kriging technique.

Open ArcToolbox, expand Spatial Analyst Tool then expand Interpolation and select Kriging.

IDW window appears select Input point features data(Interpolation_Data), Z value field select Elevation, then choose Output raster destination. Select Kriging methodOrdianary and choose Semivariogram model. Finally, click the OK button.

Now view to Kriging result.

Natural Neighbor

Natural Neighbor interpolation tool finds the closest subset of input samples to a query point and applies weights to them based on proportionate areas to interpolate values.

Interpolates a Raster surface from points using an Natural Neighbor technique.

Open ArcToolbox, expand Spatial Analyst Tool then expand Interpolation and select Natural Neighbor.

IDW window appears select Input point features data(Interpolation_Data), Z value field select Elevation, then choose Output raster destination. Finally, click the OK button.

Now view Natural Neighbor result.

Spline

Spline tool uses an interpolation method that estimates values using a mathematical function that minimizes overall surface curvature.

Interpolates a Raster surface from points using an Spline technique.

Open ArcToolbox, expand Spatial Analyst Tool then expand Interpolation and select Spline.

IDW window appears select Input point features data(Interpolation_Data), Z value field select Elevation, then choose Output raster destination. Finally, click the OK button.

Now view Spline result.

Leave a Comment

Your email address will not be published. Required fields are marked *