Generate a random number in a certain range in MATLAB

Question

How can I generate a random number in MATLAB between 13 and 20

User · Answer

If you need a floating random number between 13 and 20

(20-13).*rand(1) + 13

If you need an integer random number between 13 and 20

floor((21-13).*rand(1) + 13)

Note: Fix problem mentioned in comment "This excludes 20" by replacing 20 with 21

User · Answer

if you are looking to generate all the number within a specific rang randomly then you can try  r   randi  a b  1 d    a   start point  b   end point  d   how many number you want to generate but keep in mind that d should be less than or equal to b-a

User · Answer

ocw mit edu is a great resource that has helped me a bunch   randi is the best option  but if your into number fun try using the floor function with rand to get what you want   I drew a number line and came up with   floor rand 8    13

User · Answer

Best solution is randint   but this function produce integer numbers   You can use rand with rounding function    r   round a    b-a   rand m n      This produces Real random number between a and b   size of output matrix is m n

User · Answer

If you are looking for Uniformly distributed pseudorandom integers use    randi  13  20

User · Answer

http   www mathworks com help techdoc ref rand html  n   13    rand 1    7

User · Answer

r   13   7  rand 100 1     Where 100 1 is the size of the desidered vector

User · Answer

Generate values from the uniform distribution on the        interval  a  b          r   a    b-a   rand 100 1

User · Answer

You can also use   round mod rand  max max-1   min

[matlab] Generate a random number in a certain range in MATLAB

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