Is this okay . R2Mandel(XAXIS) [periodicity=0] {;sciwiseg , Edward Montague ; ; Roots of Mset via derivative of Mset . ; ; y , derivative ; z , Mset . ; ; x = Pixel z=1 y = 1 : y= 2*x*y+1 z = x*x + Pixel x = x - (z/y) .0001 < |z| } On Mon, Dec 11, 2017 at 11:02 AM, Jonathan Osuch <osuchj@mediacombb.net> wrote:
Edward,
In the documentation for the formula type (from a formula type, press F1), you will find the following:
NOTE: For periodicity checking, inside options, outside options, and the passes=o option to work correctly it is necessary to leave the result of the orbit calculation in the variable z.
You would want to use z instead of z2, in the formula below.
Jonathan
A further bit of code was required in the declaration of the formula .
R2Mandel(XAXIS) [periodicity=0] {;sciwiseg , Edward Montague ; ; Roots of Mset via derivative of Mset . ; ; y , derivative ; z2 , Mset . ; ; x = Pixel z2=1 y = 1 :
y= 2*x*y+1 z2 = x*x + Pixel
x = x - (z2/y)
.0001 < |z2| }
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