Random multiply by negative one

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Alma Bezares
Alma Bezares 2016 年 2 月 22 日
コメント済み: jgg 2016 年 2 月 22 日
Hello, I bootstrapped a 1000 simulation from my data with replacement and now, I would like to randomly multiply it by one or negative one, but I am not sure how to do that.
My initial guess was to do the following: y3=y2*randi([-1,1],22528,1000), but I guess it will generate pseudorandom integers in this range, which includes zero. Any suggestion on how to do this will be highly appreciated.
Thanks
Alma

回答 (3 件)

jgg
jgg 2016 年 2 月 22 日
編集済み: jgg 2016 年 2 月 22 日
Try this:
A = [1,-1];
rand_nums = A(randi([1,2],22528,1000));

Azzi Abdelmalek
Azzi Abdelmalek 2016 年 2 月 22 日
編集済み: Azzi Abdelmalek 2016 年 2 月 22 日
out=2*randi([0 1],22528,1000)-1

Alma Bezares
Alma Bezares 2016 年 2 月 22 日
Thank you so much. The code A = [1,-1]; rand_nums = A(randi([1,2],22528,1000));
did the trick. Thanks!
  1 件のコメント
jgg
jgg 2016 年 2 月 22 日
You should accept the answer then, so other people can see the solution!

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