Wolfram Language, Visualization, Programming, Math, Complex Analysis.
red circle around it represents 1, and the red in the very corners represent 2: Next, instead of computing the absolute values of z², we can look at its argument (or Arg in the WL). f = Function[{}, Table[ {0.5*(1+Arg[(x + I*y)^2]/Pi), 1.0, 1.0}, {y, 1.0, -1.0, -0.01}, {x, -1.0, 1.0, 0.01} ]] cf =