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interpolation problem [message #59969]

Mon, 21 April 2008 04:09

russ[1]
Messages: 8
Registered: April 2008

Junior Member

Hi

I am trying to interpolate a quite sparse irregular set of data points
onto a regular world grid at 0.25 degrees resolution. I have tried
using griddata in its simplest form (inverse distance) but I am
getting results that I don't believe. I seem to have areas around my
data points that have been interpolated, but regions quite a distance
from the nearest point seem to be some washed out version of the whole
array (the data is something like temperature, where I expect Siberia
to be very cold, but there are few weather stations there and the
result for Siberia looks more like the world average even though the
nearest statyions are very cold).

Any ideas?

Thanks

Russ

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