There is a whole range of stuff one can do here, right down to very
detailed models of a particular process, that will greatly improve
the interpolation, and reduce the number of samples needed, but I
was mainly focused on the general case (which is what Argyll is set
up for), where there is no assumption made about the particular process
involved. Even at this level, it is likely to be a more reasonable
assumption that the device behaviour through and between sample
points is smooth, [...]
That's what I think as well. For a general interpolation of the
scattered measurements, which is not based on a physical device model, I
actually would not know which other reasonable assumptions I should make
for the (unknown) device behaviour between the measurement points,
except smoothness.
