[Nek5000-users] findpts

[nek5000-users at lists.mcs.anl.gov]

Hi Jiang,

Please see this article to see how findpts works:
https://www.kth.se/social/files/5b14371756be5b899ec4af73/noorani_peplinski_schlatter_2015.pdf .
Also see this:
https://github.com/gslib/gslib/blob/master/src/findpts.c#L139

For a given point, findpts does not return ix,iy,iz inside an element.. That does not make sense because likely the sought point does not coincide with a GLL point. findpts returns the coordinates of the sought point in reference space i.e. r,s,t in [-1,1] inside that element. If you are not sure what reference space coordinates are, I would suggest reading up on it.

Ketan



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