# set terminal pngcairo background "#ffffff" enhanced font "arial,10" fontscale 1.0 size 600, 400 # set output 'singulr.1.png' set dummy u,v set parametric set isosamples 21, 21 set hidden3d back offset 1 trianglepattern 3 undefined 1 altdiagonal bentover set style data lines set title "Real part of complex square root function" set urange [ -3.00000 : 3.00000 ] noreverse nowriteback set vrange [ -3.00000 : 3.00000 ] noreverse nowriteback splot u**2-v**2,2*u*v,u