How to use Matlab to generate a discrete uniformly distributed decimal with a value range of {0, 0.05} and a step size of 0.01?

The randi function in matlab generates uniformly distributed pseudo-random integers. If I want to generate discrete uniformly distributed random values ​​(decimals) in the range of {0,0.05} and a step size of 0.01, how can I do it?

[John D'Errico]

@yuxiao qi Why did you need to post this exact question again 5 days later, (now closed as a duplicate), when you already accepted an enswer to this question? Are you testing us to see if we remember it was you?

Answer 1

[Star Strider]

Perhaps something like this —

rv = randi([0 5], 1, 100)/100

rv = 1x100

0 0.0100 0.0200 0 0.0200 0 0.0400 0.0200 0.0400 0.0400 0 0 0.0300 0.0100 0.0300 0 0.0100 0.0300 0 0.0400 0.0200 0.0100 0.0200 0.0500 0.0300 0.0500 0.0400 0.0200 0.0300 0.0400

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figure
histogram(rv, 5)
grid

.

[Steven Lord]

You have an off-by-1 bug. You don't want to generate numbers starting with 0 but only starting with 0.01.

rv = randi([1 5], 1, 100)/100

rv = 1x100

0.0100 0.0400 0.0500 0.0400 0.0300 0.0100 0.0200 0.0200 0.0500 0.0400 0.0200 0.0400 0.0100 0.0500 0.0400 0.0500 0.0300 0.0300 0.0300 0.0400 0.0300 0.0300 0.0400 0.0100 0.0100 0.0400 0.0500 0.0300 0.0400 0.0300

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Your histogram also has bins starting in unusual places.

figure
histogram(rv, 5)
grid

Since you know what bins you want, I'd either specify the bin edges explicitly:

figure
histogram(rv, 0.005:0.01:0.055)

or turn the numbers into a categorical array and create a histogram with one bin per category.

figure
histogram(categorical(rv))

[Star Strider]

@Steven Lord — Thank you.

The problem is that the post question text says ‘in the range of {0,0.05} and a step size of 0.01’ to I am not sure which is correct.

[John D'Errico]

Yes. There are two different and differing statements. One says [0,0.05], and the other [0.01,0.05]. Only the shadow knows which is desired.

[Steven Lord]

Ah yes, I was going by the title not the text of the post. My apologies.

[Star Strider]

@Steven Lord — No apologies necessary!

This is the central ambiguity. We need @yuxiao qi to clarify it.

[yuxiao qi]

Thank you for your answer. It starts from 0 and the part in the title has been modified.

[Star Strider]

My pleasure!

Thank you for clarifying this.

Answer 2

[Torsten]

n = 10;
x = randi(6,n,1);
x = (x-1)*0.01

x = 10x1

0.0500 0.0300 0 0 0 0.0500 0.0500 0.0100 0.0200 0.0100

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