Default value: 0

Legal values: all real numbers

setDeltaScaleDist() adds uncertainty to the growth (or shrinking) of an object.

setDefaults()
setScale(10)
setDeltaScale(10)
setDeltaScaleDist(5)
test <- createCircles(100,0)

Here we have a hundred circles named test. Each circle starts with a Scale of 10, and on average they grow at the rate of 10 per second. But some may grow as slowly as 5/sec, while others grow at 15/sec, or anywhere in between.