[AstroPy] Help finding a paper - exact interpolation flux conserving algorithm

[Martin Beroiz]

Thanks! I never even thought of FEM for this problem.

> On Aug 16, 2022, at 11:15 AM, Francesco Maggiore <framaggi55 at gmail.com> wrote:
> 
> You can try reading this  2012 article from Shangyou Zhang, Zhimin Zhang and Qingsong Zou: https://arxiv.org/pdf/1205.1862.pdf <https://arxiv.org/pdf/1205.1862.pdf>. 
> 
> Il giorno mar 16 ago 2022 alle ore 18:32 Martin Beroiz <martinberoiz at gmail.com <mailto:martinberoiz at gmail.com>> ha scritto:
> Hello,
> 
> A while back I was told of a paper describing the “exact interpolation” algorithm that reproject uses and I can’t find it now.
> It’s the flux-conserving one.
> Does anyone know which paper it’s based on? If you could point it out for my I’d appreciate the help.
> 
> Thanks!
> Martin.
> 
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