random modification

[topko]

How can i modify a random number? let's say, that i want a random number between 1 and 100, and i want it to be an integer? thx

oh.. i am using LabVIEW 6.1

[matthias.richwin]

Hi,

create a random number (Numeric Palette -> Random Number). That ranges from 0 to 1. Multiply it by 99. This will range from 0-99. Then add 1. The result will be in the range of 1-100 as you requested. Then round to integer (Numeric Palette -> Round to Nearest).

Regards
Matthias

Message Edited by matthias.richwin on 02-12-2007 10:54 AM

[Rod42]

The method Matthias suggests would have the problem that both 1 and 100 have half the probability of the other numbers appearing. (The float numbers are equally probable between 1 and 100; but only 1.0 to 1.5 will give 1, then 1.5 to 2.5 gives 2, ... and finally 99.5 to 100.0 gives 100)

I would multiply by the random number by 100.0, giving 0.0 to 100.0, (excluding 0 and 100) then round to + infinity, ie the nearest integer above, giving 1 to 100.

You might possibly want to check that rounding errors on the multiply haven't resulted in the rounding up giving 101.

Rod.

[matthias.richwin]

Right, Rod. Yours is even more simple, and of course more accurate.

Regards
Matthias

[topko]

I would like to say thx for all your help, you really were in great help!

I am new at this program, so i might ask some more n00b questions 😛

Thx again!