I saw where Greg posted some answers to your questions.
In addition, Regrid uses a variation of Shepard's Method, but enabling more
flexibility in the order of interpolant among other things. I have an old
paper that describes some of the implications of these choices at
http://www.research.ibm.com/dx/proceedings/peru/index.htm, for your
reference.
Kenneth L Gage <[EMAIL PROTECTED]>@opendx.watson.ibm.com on 06/15/2003
09:59:50 AM
Please respond to [email protected]
Sent by: [EMAIL PROTECTED]
To: [email protected]
cc:
Subject: [opendx-dev] Interpolation functions in Map and Regrid
Dear DXers -
I've been working on interpolating data from an irregular connected tet
grid to a regular hex grid using Map and Regrid. The Regrid module
mentions that the interpolation function is 1/r^(exponent), and it
appears that Map performs some form of spatial weighting for points
within the tet mesh. Does someone know the "official" names of the
interpolation algorithms implemented for these two modules? I would
like to look them up somewhere to get a better feel for what is actually
being performed in the modules.
Please forgive me if the answer has been discussed before - I couldn't
find specifics on the mailing lists, and I've been paging through the
source for hours (my C ain't what it used to be).
Thanks in advance!
Ken
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Kenneth Gage
MD/PhD Student
McGowan Institute for Regenerative Medicine &
University of Pittsburgh Department of Chemical Engineering
