How to use Random() function

[Ec116]

Hello dear all

Newbie here, Iam trying to get a random number from zero to a number the user has given.

So i have a user given number (for example the number 10) in an integer variable named UsrNum

How can i use the random() function to set a different variable (example RandNum) to get a random number from 0 to the user given number (ie 10)

 

[Dm114]

Hello dear all

Newbie here, Iam trying to get a random number from zero to a number the user has given.

So i have a user given number (for example the number 10) in an integer variable named UsrNum

How can i use the random() function to set a different variable (example RandNum) to get a random number from 0 to the user given number (ie 10)

Random() fonction returns a decimal number in the range of 0<d<1. So you can write something like: RandNum=round (UsrNum*random(), 0)

 

[Jacob L]

Try this: http://www.macrodroid.com/macrostore?id=7868

 

[Ec116]

Thank you,

Jamie from macrodroid support helped me with the solution FLOOR(RANDOM() * [lv=UseNum] + 1)

What i proposed was adding the option to use either integer or decimal variables, for min and max, in the Random option

 

[Dm114]

Thank you,

Jamie from macrodroid support helped me with the solution FLOOR(RANDOM() * [lv=UseNum] + 1)

What i proposed was adding the option to use either integer or decimal variables, for min and max, in the Random option
View attachment 224

As I suggested, you'd better use 'round' function rather than 'floor'. Otherwise you won't ever reach the upper limit...

 

[MacroDroidDev]

@Dm114 Please note the + 1 on the end of what I suggested. You should not use round if you want a true random distribution because for example if you have a max of 10, then only >= 9.5 will round to 10 (so this is only half as likely to every happen).

 

[Dm114]

@Dm114 Please note the + 1 on the end of what I suggested. You should not use round if you want a true random distribution because for example if you have a max of 10, then only >= 9.5 will round to 10 (so this is only half as likely to every happen).

You are right: sorry, I didn't notice the '+1'!

 

[Fredroypoulin]

Would be nice to have arguments with the RANDOM Expression.

With integer variables, simply.

Example :

One argument :

RANDOM ( Variable_1 )
Gives you a number between 1 and Variable_1


Two arguments :

RANDOM ( Variable_1 , Variable_2 )
**Gives you a number between Variable_1 and Variable_2. (Like in the Random option but using variables instead of fixed values)**