# set terminal pngcairo transparent enhanced font "arial,10" fontscale 1.0 size 500, 350 # set output 'singulr.9.png' set dummy u,v set parametric set isosamples 31, 31 set hidden3d back offset 1 trianglepattern 3 undefined 1 altdiagonal bentover set title "Real 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,u