Re: [OctDev] griddata / delaunay

[David B. <Dav...@mo...>]

According to Jonathan Stickel <jjs...@sb...> (on 09/02/04):
> OK, I see there has already been quite a bit of discussion and effort 
> regarding the qhull based functions.  I still have 2 issues:
> 
> 1.  Griddata is used for (linear) interpolation and, as such, should 
> suffer not at all when using delaunay with the QJ option.  Let's 
> implement this, please.  It is a very easy fix, as indicated in my patch 
> for griddata.m at the beginning of this thread.

I leave this point to someone who knows more..

> 2.  Segfaults should never occur, but I have found an illustrative case 
> where it does with delaunay.  I'll leave this to the experts.

Here I have to agree, qhull should not be allowed to crash octave. If you
implement the fix I suggested, I'll commit it... I started to do it then
couldn't be bothered since I'd also have to check for the case of 
NEED_OCTAVE_QUIT and manually define something for the macros 
BEGIN_INTERRUPT_IMMEDIATELY_IN_FOREIGN_CODE, as well as the function
octave_throw_interrupt_exception.... Just defining them to nothing 
is probably an option...

D.

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David Bateman                                Dav...@mo...
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