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Generating one random number from a given range of numbers.

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Rich Cavanaugh
Rich Cavanaugh am 5 Apr. 2018
Kommentiert: Rich Cavanaugh am 5 Apr. 2018
This may be a poor question but I can't seem to find a usable answer. I need to generate one random number from a range 2/3 X to X
So if I were to set X to 30 I would want one random value from 20 to 30 likewise if I set X to 300 I would want a value from 200 to 300...
Does anyone have any suggestions for how to go about this? Thanks in advance.

Antworten (2)

Fangjun Jiang
Fangjun Jiang am 5 Apr. 2018
R = randi([IMIN,IMAX],...) returns an array containing integer values drawn from the discrete uniform distribution on IMIN:IMAX

Bosong Lin
Bosong Lin am 5 Apr. 2018
Hi Rich,
If I understood your question, I would do it this way: 1/3*X*rand()+2/3*X; rand() returns a single uniformly distributed random number in the interval (0,1).
Bosong
  1 Kommentar
Rich Cavanaugh
Rich Cavanaugh am 5 Apr. 2018
I feel like this is close, but I need an integer return. I am using this piece of the program to randomly select an index in the last third of a matrix so i can change it's value.

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