settermsvgsize680,600enhancedfont'Helvetica,12'setoutput'TaylorCosCosEnhanced.svg'setmultiplotsetcntrparamlevelsauto20setcontourbasesetisosamples60,60setsamples60,60setxlabel"x"setylabel"y"setzlabel"z"setxrange[-2*pi:2*pi]setyrange[-3:3]setzrange[-40:30]# Draw the surfacesetpm3dsethiddsetkeyoffsetgridlayerdefaultlinetype-1linecolorrgb"gray"linewidth0.200,linetype-1linecolorrgb"gray"linewidth0.200setpalettedefined(-1"blue",0"purple",1"red")i={0.0,1.0}splotreal(cos(x+y*i))# Draw the linesunsetcntrparamunsetcontourunsetpm3dunsethiddsetisosamples20,20setsamples20,20splotreal(cos(x+y*i))ltrgb"black"setview29,53unsetmultiplotsettermx11setoutput