Linear Interpolation code ...

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ddmm
ddmm 2021-1-19
编辑： ddmm 2021-1-20
I have a data set (x) containing 1024 data and another corresponding data set (y).
What I want to do is find out which two numbers integers are in x, and use these two numbers and the corresponding y value in the formula below and find p value for every integer.
p = [(y2-y1) / (x2-x1)] * (i-x1) + y1
i = 178,179 ... 1931 (integers)
x1 <i <x2
y1 and y2; Corresponding values to x1 and x2.
x = 177.1458, 179.1622, 181.178 ...., 1930.821
y = 653, ..., 300
thank you in advance

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Matt J
Matt J 2021-1-19
编辑：Matt J 2021-1-19
p=interp1(x,y, ceil(x(1)):floor(x(end)) );

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