>For the iso experts, is there any way I can randomly vary the
>distance between the peaks of a sine wave?


yes, the function you are looking for (I think) would look something like
this (assuming a sine wave along the x axis):

sin(  ( x + noise3d(x,y,z) )  * frequency_of_sine_wave*2*pi)

hope this helps,

Quadhall
(not an iso-expert, more of an iso-amateur)

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