random add or subtract a number to an array

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Manikatam Gaddam
Manikatam Gaddam 2019-4-1
评论： Manikatam Gaddam 2019-4-2
Hello All,
I am trying to randomly add or subtract a constant number to all array elments.
For suppose
a= [1 2 3 4]
b = a + either (0.5 only or -0.5 only)
Is there such possiblity in matlab?

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采纳的回答

Image Analyst
Image Analyst 2019-4-2
Try this:
a = [1 2 3 4]
r = randi([0, 1], size(a)) - 0.5
b = a + r

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