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[Octave-bug-tracker] [bug #35178] griddata: cubic interpolation not yet
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From: |
Nicholas Jankowski |
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Subject: |
[Octave-bug-tracker] [bug #35178] griddata: cubic interpolation not yet implemented |
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Date: |
Mon, 13 Apr 2020 17:09:57 -0400 (EDT) |
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User-agent: |
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/81.0.4044.92 Safari/537.36 |
Follow-up Comment #9, bug #35178 (project octave):
I started looking around but didn't get very far. Based on the matlab docs
stating triangulation based and C2 continuous, I started searching, but there
a quite a few options for cubic interpolation. A common one I saw does
triangulation, then generates a cubic spline on each edge and does a local
interpolation base on those. The key is what boundary conditions to set on the
spline endpoints. And I was hoping to come across a borrow-able algorithm
somewhere, but haven't yet. Not something as straightforward as the v4
algorithm. Might just have to pick one and run with it.
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