[Eeglablist] Interpolation method in topoplot
arno at salk.edu
Fri Jun 23 16:29:42 PDT 2006
The interpolation method in topoplot() is 'invdist' (inverse distance
which is the same as 'v4'). It is in the call to "griddata" at line
1571. You may change it to any of other Matlab interpolating methods.
See the help of Matlab griddata function for more help. In our practice,
most interpolation methods are equivalent except at boundaries. As
indicated in griddata help 'v4' returns smooth surfaces, which is why we
are using it (and also for historical reasons).
Robert Lawson wrote:
> What method of interpolation is used in topoplot?
> Can different interpolation methods be chosen?
> I am especially interested in sherical spline interpolation- is this
> available or could it be added easily?
> Robert Lawson
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