interp1 (MATLAB Functions)

MATLAB Function Referenceinterp1One-dimensional data interpolation (table lookup)Syntaxyi = interp1(x,Y,xi)yi = interp1(Y,xi)yi = interp1(x,Y,xi,method)yi = interp1(x,Y,xi,method,'extrap')yi = interp1(x,Y,xi,method,extrapval)pp = interp1(x,Y,method,'pp')Descriptionyi = interp1(x,Y,xi) interpolates to find yi, the values of the underlying function Y at the points in the vector or array xi. x must be a vector. Y can be a scalar, a vector, or an array of any dimension, subject to the following conditions:If Y is a scalar or vector, it must have the same length as x. A scalar value for x or Y is expanded to have the same length as the other. xi can be a scalar, a vector, or a multidimensional array, and yi has the same size as xi.If Y is an array that is not a vector, the size of Y must have the form [n,d1,d2,...,dk], where n is the length of x. The interpolation is performed for each d1-by-d2-by-...-dk value in Y. The sizes of xi and yi are related as follows:If xi is a scalar or vector,...