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simpeg / discretize

Discretization tools for finite volume and inverse problems.
http://discretize.simpeg.xyz/
MIT License
163 stars 33 forks source link

Spurious projections since 0.8.3 #344

Closed domfournier closed 8 months ago

domfournier commented 8 months ago

Ran into issues computing MT data after upgrading discretize to 0.8.3, from 0.7.4.

See the example attached - large discrepancies on some points.

image

test_files.zip

domfournier commented 8 months ago

Turns out that the linear interpolation doesn't care if the neighbouring cells are air cells. Beware when computing e-fields.