generate random numbers in range from (0.8 to 4)

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Jamal Ahmad
Jamal Ahmad 2013-3-11
评论： Image Analyst 2021-1-20
Hi How to generate 20 random numbers in range from (0.8 to 4) Thanks
  1 个评论
Jan
Jan 2017-11-6
编辑：Jan 2017-11-6
@Arnab: See Azzi's and Image Analyst's answers, which contains exactly the same.

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采纳的回答

Azzi Abdelmalek
Azzi Abdelmalek 2013-3-11
编辑：Azzi Abdelmalek 2013-3-11
xmin=0.8
xmax=4
n=20
x=xmin+rand(1,n)*(xmax-xmin)
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显示 1更早的评论
Steven Lord
Steven Lord 2021-1-19
Ran in:
xmin=0.8;
xmax=4;
n = 1e6; % Generating a few more numbers than the original n=20;
x=xmin+rand(1,n)*(xmax-xmin);
histogram(x, 0.8:0.1:4.1)
Looks reasonably uniform to me.
Image Analyst
Image Analyst 2021-1-20
If you want it EXACTLY perfectly uniform (which is doubtful), then you should use linspace() instead of rand().

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更多回答（3 个）

Image Analyst
Image Analyst 2013-3-11
Did you look in the help? You will see the first example does what you want:
Example 1
Generate values from the uniform distribution on the interval [a, b]:
r = a + (b-a).*rand(100,1);
  1 个评论
Jan
Jan 2013-3-11
编辑：Jan 2017-11-6
Suggesting to read the help text is a very strong idea, because it helps in nearly all future problems also.

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ChristianW
ChristianW 2013-3-11
n = 20;
R = [0.8 4];
z = rand(n,1)*range(R)+min(R)
Ka Mirul
Ka Mirul 2017-10-17

Hallo, I have seen a tutorial about "Generating Random Number in Specific Range" at https://www.youtube.com/watch?v=MyH3-ONYL_k and it works. Hope it will help you.

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