Problem in interpolation of data.
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Daniyal Ali
el 13 de Oct. de 2015
Comentada: Walter Roberson
el 13 de Oct. de 2015
The following code is giving me the error that "The grid vectors do not define a grid of points that match the given values". I tried to use linear and other methods too, but nothing works. Need help.
a=unique(Eo.signals.values(:,:));
b=unique(SOC.signals.values(:,:));
b1 = interp1(a,b,19,'spline','extrap')
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Walter Roberson
el 13 de Oct. de 2015
What reason do you have for expecting that the number of unique values of one kind matches the number of unique values of the other kind, and that they should happen to be sorted in the same order?
are you sure you want to extrapolate at 19 exactly? That reads more like a number for the number of extrapolated values you would want.
I wonder if maybe you are looking for something closer to a cubic spline fit of the data?
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Walter Roberson
el 13 de Oct. de 2015
Use the three output form of unique() to produce A and ia and ic (third output). Use ic to index the second array to get the values corresponding to each A value. Then the two will be the same length and in correspondence.
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