vectorize for loop while a matrix should be splited inside the loop

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Sadegh Salesi Mousaabadi 2017-3-3

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回答： Walter Roberson 2017-3-6

Hi guys, I want to vectorize this for loop but not much progress unfortunately. I appreciate your helps in advance.

for j = 1 :j
MIxy(j)=kernel(X(j,:),y);
end

where kernel is a function which receives two vectors and calculates their kernel value. the X is an n by m matrix. I wanna calculate the kernel of each row of the matrix X with matrix y can save it in MIxy.

Many thanks

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Darshan Ramakant Bhat 2017-3-6

How are you calculating the kernel of two vectors. You can apply vectorization if kernel function can directly handle the matrices. Please specify your kernel() function.

Regards

Darshan Bhat

KSSV 2017-3-6

You will not get help unless kernel function known to us.

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回答（1 个）

Walter Roberson 2017-3-6

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for j = 1 :j
  MIxy(j, :)=kernel(X(j,:),y);
end

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MATLAB Language Fundamentals Matrices and Arrays Creating and Concatenating Matrices

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