# set terminal png transparent nocrop enhanced font arial 8 size 420,320 # set output 'singulr.11.png' set dummy u,v set parametric set view 60, 120, 1, 1 set isosamples 31, 31 set hidden3d offset 1 trianglepattern 3 undefined 1 altdiagonal bentover set title "Imaginary part of complex 4th root function" set urange [ -1.00000 : 1.00000 ] noreverse nowriteback set vrange [ -1.00000 : 1.00000 ] noreverse nowriteback splot u**4-6*u**2*v**2+v**4,4*u**3*v-4*u*v**3,v