How can I sum two plots that don´t have the same number of elements?
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Andriy Voshchenko
le 26 Mai 2022
Commenté : Sam Chak
le 27 Mai 2022
I have the following case which represents the pressure distribution over a profile:
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/1011735/image.png)
I want to separate the intrados and extrados sections and calculate the sum of it. I´ve divided my data but the 2 parts don´t have the same number of elements. For example, I have 170 data points for the entire plot and 94 of them are data from intrados and the rest is extrados.
I can divide it and represent it:
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/1011740/image.png)
but I have troubles with performing the sum. I need to create extra points somehow so the 2 data sets have the same number, how can I do it?
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Sam Chak
le 26 Mai 2022
I think one of the methods is to perform data interpolation using interp1 so that both curves are interpolated at the same point coordinates.
https://www.mathworks.com/help/matlab/ref/interp1.html
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