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eug
Occasional Contributor
Posts: 6
Registered: ‎11-21-2016

Fill Nodata raster regions

Hello,

Can anyone help me with a workflow in Spatial Modeler, to do the following workflow:

 

  • Fill raster regions with no data values by interpolation from edges.
  • The values for the no-data regions are calculated by the sourrounding pixel MIN values using inverse distance weighting.
  • After the interpolation a smoothing of the results takes place.

Thank you

Highlighted
Technical Evangelist
Posts: 696
Registered: ‎10-01-2015

Re: Fill Nodata raster regions

This article in Spatial Modeler Tutorials should give you a good starting point (you'll need to modify it to use Minimum pixel values):

 

https://community.hexagongeospatial.com/t5/Spatial-Modeler-Tutorials/Fill-Holes-in-a-DEM-by-Interpol...

 

However it uses Delaunay Triangulation to interpolate across the holes, not IDW. Spatial Modeler doesn't currently have an IDW option, so if it's important to you to have that particular interpolation technique I would highly recommend logging an Idea for an IDW operator.

 

Hope this helps.

 

Cheers

 

Ian Anderson
Chief Product Owner, Desktop Remote Sensing
Hexagon Geospatial
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