Faults are not supported with the Kriging gridding method in Surfer 8 and newer versions. In older versions of Surfer, Kriging with faults caused an error ("The system of Kriging equations is singular") due to the discontinuity along the fault, and this feature was removed from Surfer 8 and all newer versions.
We currently recommend using one of the other gridding methods that supports faults, as listed in the Breaklines and Faults help topic:
- Inverse Distance to a Power
- Minimum Curvature
- Nearest Neighbor
- Data Metrics
Minimum Curvature produces a very similar result to Kriging, so we suggest you start with that method.
We value all customer feedback and use it to guide our software development. If you would benefit from Kriging with faults, please let us know.
Updated November 14, 2019
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