Adding more data points using interpolation

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I have an array of 1x1382209 elements for Electric Field and an array of 1x172776 elements for Solar Zenith Angle (SZA). SZA follows a sinusoidal behavior and I want to give it more elements to "upsample" it to have as many data points as the Electric field array. I'm using upsample loosly here. I just need reasonable new data points maybe by interpolation of elements in SZA and adding the new data from interpolation exactly between the data points that's been intrapolated.
Thanks

Accepted Answer

Matt J
Matt J on 3 Jan 2022
interp1(SZA, linspace(1 , numel(SZA), numel(ElectricField)) )
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