Get a value of non existant index of array by interpolation

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CLEBER ALBERT
CLEBER ALBERT 2016-9-3
回答： Star Strider 2016-9-3
Im trying to remember a function in Matlab which returns a value of non existant index of array by interpolation.
eg:
arry = [4 5 6];
index = 1.5;
suchfunction(arry,index) %should return a value between the index 1 and 2 by interpolation (would be 4.5)
ans = 4.5
Could someone help me!?

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采纳的回答

Star Strider
Star Strider 2016-9-3
Use the interp1 function:
arry = [4 5 6];
idx = 1:3;
idxi = 1.5;
arryi = interp1(idx, arry, idxi)
arryi =
4.5

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