Interpolation between 2 data sets acquired at same grids

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maryam al labbad
maryam al labbad 2021-2-12
评论： maryam al labbad 2021-2-14
Hi,
I have two data sets, that are sampled at same height (y axis) (see image) and I would like to obtain the data set in between by interpolation. I tried interp1 but it is not working for me. I used to do interplation to obtain points at different height in the same profile, but when I try to interpolate to abtain the data points in between 2 different profiles at the same heights, it is not working. Any help would be appreciated.
  2 个评论
darova
darova 2021-2-13
Did you try to interpolate in X direction (horizontally)?
Please provide your code
maryam al labbad
maryam al labbad 2021-2-13
U_3_I = interp1(Height, profile,newHeight);
I used to use this code to obtain the data point at different height in the profile.
I tried using this,
U_3_I = interp1(profile1, profile2,Height);
but this does not work. Can you explain how to interpolate in X direction?

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Cris LaPierre
Cris LaPierre 2021-2-13
"when I try to interpolate to abtain the data points in between 2 different profiles at the same heights, it is not working"
If both data sets share the same Y value, then the result of interpolation is just going to be the average of their X values. No need to use interp for this. Just use mean.
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maryam al labbad
maryam al labbad 2021-2-14
Actually, what you mentioned at the begining about averaging is correct. my two data set have the same y value, and thus, interpolation gives the same answer as averaging. I think I have made a mistake somewhere which casued the answer to be different.

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