필터 지우기
필터 지우기

What is vectorization? Why use vectorization instead of loops?

조회 수: 94 (최근 30일)
Hans Scharler
Hans Scharler 2023년 10월 11일
답변: Hans Scharler 2023년 10월 11일
Over at Reddit, a user asked about vectorization vs. a loop. This is a fundemental concept in MATLAB. So, what is vectorization? Why use it instead of loops?

채택된 답변

Hans Scharler
Hans Scharler 2023년 10월 11일
Vectorization is about replacing explicit loops with matrix and vector operations. This can lead to more readable and efficient code. MATLAB is particularly well-suited for vectorized operations as it is designed to work with matrices and vectors natively.
Here's a normal loop approach to square each element in a vector.
n = 10;
vector = 1:n;
result = zeros(1, n);
% Use a loop to square each element of a vector
for i = 1:n
result(i) = vector(i)^2;
end
disp(result);
1 4 9 16 25 36 49 64 81 100
Here's how this looks with vectorization:
vector = 1:10;
% Square each element of a vector using vectorization
result = vector.^2;
disp(result);
1 4 9 16 25 36 49 64 81 100
The magic here is the ".^" which is an element-wise operation. You can also do this with ".*" and "./".

추가 답변 (0개)

카테고리

Help CenterFile Exchange에서 Price and Analyze Financial Instruments에 대해 자세히 알아보기

태그

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by