Hi Walt, This works perfectly! I'll add it to the other methods I've received for evaluation.
Thanks and cheers, Roger On Mar 4, 2013, at 10:06 AM, "Sumner, Walt" <wsum...@dom.wustl.edu> wrote: > This seems to work: > > Make a stack with a button having this script, then click the button. It will > bounce around in a normal distribution in H and V coordinates. > > > on mouseUp > > local tSD,tMean,tPoint,tStartPoint > > put the loc of me into tStartPoint > > put the width of this window div 6 & comma & the height of this window div > 6 into tSD > > put the width of this window div 2 & comma & the height of this window div > 2 into tMean > > put BoxMullerDist(tMean,tSD) into tPoint > > set the loc of me to tPoint > > wait 1 second > > set the loc of me to tStartPoint > > end mouseUp > > > function BoxMullerDist pMean,pStdDev > > local tU,tV,tX,tY > > put random(100)/100 into tU > > put random(100)/100 into tV > > put sqrt(-2*ln(tU))*cos(2*pi*tV) into tX > > put sqrt(-2*ln(tU))*sin(2*pi*tV) into tY > > return item 1 of pMean + tX*item 1 of pStdDev & comma & item 2 of pMean + > tY*item 2 of pStdDev > > end BoxMullerDist > > You can tweak the range by setting tSD to div 4 to hit the edges more often. > You can tweak the center point by shifting the mean, but you will go off the > edges sometimes if you shift too far. > > Ref: > http://en.wikipedia.org/wiki/Normal_distribution#Generating_values_from_normal_distribution > > Walt Sumner > _______________________________________________ > use-livecode mailing list > use-livecode@lists.runrev.com > Please visit this url to subscribe, unsubscribe and manage your subscription > preferences: > http://lists.runrev.com/mailman/listinfo/use-livecode _______________________________________________ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode