How do I fix this interpolation error
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I am trying to find the exact time constant on the plot but continue to get this error when trying to run the program
1 个评论
Star Strider
2023-3-5
The ‘exprmenttime’ and ‘exprmentresult’ appear to be column vectors, so one optioon could be:
tr = unique([exprmenttime exprmentresult],'rows')
then separate ‘tr’ into the two sorted vectors later.
Similarly,
[tu,idx] = unique(exprmenttime);
exprmentresult = exprmentresult(idx);
could work.
The problem with the ‘desiredY’ assignment is that the interpolation is going to be interpolating ‘expermentresult’ by ‘temptimeconstant’ returning a value for ‘expermenttime’ as the output. I get the impression that you want the result of:
desiredY = interp1(expermenttime, exprmentresult, temptimeconstant);
instead.
However with neither the data nor code text that could be copied, pasted, and run, I cannot determine that.
.
回答（1 个）
Torsten
2023-3-5
0 个投票
You can only inverse interpolate if your vector "exprmentresult" is strictly increasing or strictly decreasing. Since it contains duplicate values - as the error message from interp1 claims - MATLAB throws an error.
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