|
| From: | Gunnar Farnebäck |
| Subject: | [Octave-bug-tracker] [bug #31352] interp2 broken for non-quadratic matrices when using cubic interpolation |
| Date: | Tue, 19 Oct 2010 21:39:58 +0000 |
| User-agent: | Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.13) Gecko/20100916 Iceweasel/3.5.13 (like Firefox/3.5.13) |
Follow-up Comment #3, bug #31352 (project octave):
My comments on newinterp2:
1. Is there any difference in result between the meshgrid case and
__splinen__ with the corresponding arguments? Which is faster?
2. The scattered data case looks like a generalization over __splinen__.
3. The nargin==3 special case is broken; XI and YI remain unassigned and Z
has the wrong content.
4. The spline+ppval combination can be reduced to a spline call with three
arguments.
5. Please fix the standard bicubic interpolation for equispaced data. When
using interp2 on image sized data speed (and memory consumption) really
matter.
/Gunnar
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