Triple Summation in Matlab
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Following Formula uses triple index summation.
How can I achieve this in matlab. All of the terms being summed are row vectors ( coefficients of polynomial ) except f(xi , yj , zk) is a row vector of numbers.
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Walter Roberson
on 29 Jun 2020
size of f(xi ,yj ,zk) is equal to (size of x) * (size of y) * (size of z)
That means that given scalar xi, yj, zk, then f(xi, yj, zk) is a 3 dimensional array. A 3 dimensional array is not a "row vector"
p=length(x)
That disagrees with p=2 for x = [x0 x1 x2] . It looks to me as if p is the degree of the polynomial implied by x, which would be length(x)-1
This simply means that from lagrange coefficients matrix we have to use first row which is a polynomial.
As in sum(L3(1,:) .* x.^(length(x)-1:-1:0)) ?
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