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Is there a way in Matlab using the pseudo number generator to generate numbers within a specific range?

For example:

round(7*rand(1,5))

Generates 5 numbers between 1 and 7 Is there a way to generate 5 random numbers between 5 and 7? Or an abstraction of that?

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Ben Fossen Avatar asked Dec 08 '22 04:12

Ben Fossen


2 Answers

More generally:

minInt = 5;
maxInt = 7;
numInts = 10;

r = randi([minInt, maxInt],[1,numInts])

r =

 6     7     7     7     6     5     5     5     7     5
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MatlabDoug Avatar answered Dec 09 '22 16:12

MatlabDoug


First, if you are wanting to generate random integer values, it's better to use the function RANDI. Then it's just a matter of shifting and scaling the random numbers accordingly. The following should give you random integers between 5 and 7 inclusive:

nums = randi(3,[1 5])+4;

EDIT: As Amro's comment and Doug's answer point out, there is a more straightforward solution whereby you can specify the range directly as the first argument to RANDI:

nums = randi([5 7],[1 5]);
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gnovice Avatar answered Dec 09 '22 16:12

gnovice