#793: Provide breakline (fault line) support for surface interpolation modules
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Reporter: marisn | Owner: grass-dev@lists.osgeo.org
Type: enhancement | Status: new
Priority: normal | Milestone: 7.0.0
Component: Vector | Version: unspecified
Keywords: | Platform: Unspecified
Cpu: Unspecified |
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Current v.surf.* modules do not support breaklines (fault lines). It's
common in geology and other fields to have line/surface that limits
interpolated value expansion - interrupts spatial correlation
(neighborhood influence).
IMHO breaklines should be taken into account at two times - first when
choosing data input points for calculation (only points at one side of
line) and second time - when assigning values for cells - only cells at
one side of line should receive values.
I understand that this is longterm goal and it requires lot of discussions
how it should be implemented. Still it's a wanted feature.
Hamish wrote:
> try v.surf.icw from addons. [...] it is very computationally expensive
> so number of starting points should be kept low.
note the new version isn't quite as expensive as the old, and now supports
multi-processing. Probably should still be limited to less than a few
hundred input points though.
