Lua math.random (1.9) almost always returns me 7, this may be a bug?

[Mikii]

I am running this function at the time of Onstart in Global Events.

local  i      =    math.random(1,9)
print(">> NUMBER = " .. i)

almost always (99%) returns me 7, this may be a bug? ( Or I should play in the lottery number 7? rsrsrs)


UPTADE: SEE THIS

local  MYVAR         =    math.random(1,9)
  print(">> MY VAR = " ..  MYVAR )
for a = 0, 25 do
   local  TEST        =    math.random(1,9)
   print(">> NUMBER = " .. TEST)
   end

 

[Gall]

Your series are quite low - 26 27rolls? That's likely not going to give flat distribution. Try rolling this on 100k or 1 million rolls or 5 milion or more. Count how many times each number has been rolled. Then we can give okaish prediction about randomness. And even then there is chance for insanely long string of one number. Probability is really, really fickle, especially on short series.

 

[Summ]

3x 7 out of 26 that is exactly right lol.

 

[Mikii]

@Summ
Do not confuse the variable "my var" with the variable "number" in "for", I just ran this "for" for to test processing. It will be not used variable "number".

local  MYVAR        =    math.random(1,9)
  print(">> MY VAR = " ..  MYVAR )

MYVAR almost always returns me 7

Look again.
Processed right now.



AND AGAINNN..



@
Gall

I need a number into 1 or 9..



Ho my God 7 Processed right now with new function...

  local  MYVAR        =    math.floor(math.random(1,100) / 10)
                            print(">> MY VAR = " ..  MYVAR       )

 

[Dalkon]

Place this before the first math.random.

math.randomseed(os.time())

 

[pepe]

http://codepad.org/PCFMak41

from 1000000 iterations, 110945...

 

[Mikii]

http://codepad.org/PCFMak41

from 1000000 iterations, 110945...

This is kind of unnecessary, because one use a 'for' inside a function that already uses an 'is' (mart.ramdom). It's just unnecessarily cumulative processing.

Place this before the first math.random.

math.randomseed(os.time())

Apparently it did not work well, or maybe I did the wrong way.

                            math.randomseed(os.time())
                            local  MYVAR        =    math.floor(math.random(1,100) / 10)
                            print(">> MY VAR = " ..  MYVAR)

Returned 7

 

[Gall]

@Summ
@
Gall

I need a number into 1 or 9..



Ho my God 7 Processed right now with new function...

  local  MYVAR        =    math.floor(math.random(1,100) / 10)
                            print(">> MY VAR = " ..  MYVAR       )

I am talking that, even with lot of those 7 at start you can't be sure that is not randomness after running it like 20 tries. If you could initialize script for ton of times, then we could be sure its not your luck. People win in loteries, get hit by thunder or eaten by sharks even though chances for such events are ridiculously small.

 

[Mikii]

I am talking that, even with lot of those 7 at start you can't be sure that is not randomness after running it like 20 tries. If you could initialize script for ton of times, then we could be sure its not your luck. People win in loteries, get hit by thunder or eaten by sharks even though chances for such events are ridiculously small.

Still, always run and the 7 ...

 

[Gall]

Did some research
http://lua-users.org/wiki/MathLibraryTutorial

But beware! The first random number you get is not really 'randomized' (at least in Windows 2K and OS X). To get better pseudo-random number just pop some random number before using them for real:

-- Initialize the pseudo random number generator
math.randomseed( os.time() )
math.random(); math.random(); math.random()
-- done.

Looks like it a choice of design.

This is because of similar seeds. You don't really get the same value but
similar values. Try to set the interval to (math.random(0, 32767)) and you
will see the difference.

 

[Mikii]

Did some research
http://lua-users.org/wiki/MathLibraryTutorial


Looks like it a choice of design.

Interesting.
I'll read and optimize a particular function just for this.

 

[Mikii]

Did some research
http://lua-users.org/wiki/MathLibraryTutorial


Looks like it a choice of design.

Really, just add:

math.randomseed (os.time ())
math.random ();

In the header of my code, which now has returned me random values.
It is interesting other people also become aware of it.


Liked All for Help...


SOLVEDDDD