How to generate a random distribution.
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Hi I'm doing a simple project for a course I'm in and I've been having trouble with some of the scripts my prof gives us. I think its because they're written for an older version of Matlab. I'm using matlab 2014a.
I think this code is supposed to generate a random distribution for x, but when I run it x ends up getting a stuck value, I know that's not supposed to happen. Can some one help?
function x=creature_state()
x=floor(2.1*rand)+1;
return
4 个评论
David Young
2014-7-12
Sounds like the problem is with the code that calls creature_state, not with creature_state itself. I think you need to show the relevant part of the calling code. (Best to edit the question to include it.)
回答(1 个)
Image Analyst
2014-7-11
Did you know that floor rounds down to the nearest integer? If you want unique values, get rid of the floor. It has nothing to do with the version of MATLAB either of you are using.
3 个评论
Image Analyst
2014-7-12
You can use randi(3, 1) to get a random number between 1 and 3. It's an integer though actually of class "double" rather than int32. It would be preferable than using that code you have.
Image Analyst
2014-7-12
Regarding your comment above. It does not get stuck. Look at my test3.m where I call you function:
function test3
clc; % Clear command window.
x=creature_state()
x=creature_state()
x=creature_state()
x=creature_state()
x=creature_state()
x=creature_state()
function x=creature_state()
x=floor(2.1*rand)+1;
return
Now, look at the command window:
x =
1
x =
2
x =
3
x =
3
x =
1
x =
3
Do you see that x is always the same value every time? I don't.
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