The 6/4 result is to be expected and is not related to a rounding issue but simply to the nature of randomness—setting a ratio of 0.5 doesn't guarantee a 50-50% split, it only means that the distribution will tend towards this goal, especially when the number of samples will be high enough (and 10 samples definitely isn't much at all).
On 11 April 2016 at 17:06, Olivier Jeannel <[email protected]> wrote: > Thank's both of you :) Yes, I did use random probability, and it's exactly > the translation of the Houdini expression explained by Christopher ! > I guess I was confused because (in Ice) when I input a ratio of 0.5, It > returns 6 particles and 4 particles, instead of 5 and 5. > I guess some rounding integer issue ... > But thank's for the clarification :) I'm ashamed it was so obvious :/ > > > On Mon, Apr 11, 2016 at 11:34 AM, elhemp <[email protected]> wrote: > >> Test Random Probability Node? >> >> Cheers, >> Stephan. >> >> Am 11.04.2016, 10:57 Uhr, schrieb Olivier Jeannel <[email protected] >> >: >> >> > Hi guys, >> > >> > This is a case that keeps coming every once in a while. I'm scratching >> > my head on it this morning. >> > In Ice, lets say you have 10 particles, and you want to "select" 60% of >> > them randomly. >> > ("select" means 60% with an attribute of 1, and 40% with an attribute of >> > 0) >> > >> > >> > How would you do that ? >> ------ >> Softimage Mailing List. >> To unsubscribe, send a mail to [email protected] >> with "unsubscribe" in the subject, and reply to confirm. >> > > > ------ > Softimage Mailing List. > To unsubscribe, send a mail to [email protected] > with "unsubscribe" in the subject, and reply to confirm. > -- Christopher Crouzet *http://christophercrouzet.com* <http://christophercrouzet.com>
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