What is vectorization?

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Hello. now, I search the method of vectorization. But, honestly, I don't know what vectorization mean.

I know mathematical vector, and vector regarding with matrix. But, What is vectorization of line(or loop)? is vectorized line different with normal line?

My final work is input some z value on the line. but defore that, some paper say that I must vectorize the line(or loop). Why?? please someone explain that to me. I really need your help.

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Stephen23 2017-10-25

编辑：Stephen23 2017-10-25

The MATLAB documentation is easy to search using any internet search engine. When I searched for "MATLAB vectoriation" using a major search engine, this was the very first result:

https://www.mathworks.com/help/matlab/matlab_prog/vectorization.html

Also this explains vectorization very well:

https://blogs.mathworks.com/videos/2014/06/04/vectorizing-code-in-matlab/