Hi Nathan,
I believe the issue is that the equation has a divide by 0 term, which becomes infinity/undefined when x = 0 and y = 0. I changed the equation slighly to have this instead 1.4738*(2*3.14*abs(x)/sqrt(x^2+y^2+1e-50)+1). I do not see the issue any more as the divide by 0 error can be prevented due to the addition of 1e-50. Please let me know if it does not work.
Regards,
Amrita
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