How to fined specific Kth values of an vector with n element

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Idris Oussalah
Idris Oussalah 2020-2-23
回答： Image Analyst 2020-2-23
Supose i have a vector a = [ 2 4 6 8 10] and i want to extract the 1st , 3rd and 5th elements so i want to use a vector b = [1 3 5] and get the answer back as : c = [2 6 10]; how do i do that?
Thanks!

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回答（1 个）

Image Analyst
Image Analyst 2020-2-23
Use b as a linear index for a:
a = [ 2 4 6 8 10]
b = [1 3 5]
c = a(b)

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