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Hi, <br><br>I am still trying to get a better figure than <br>what I've got. <br><br>With the code below one can see <br>"holes" in the curve. Moreover in the <br>continuous parts it seems to have a jigsaw <br>pattern. <br><br>As suggested a while ago, stepFactor=0.1 improves <br>the drawing but it takes too much time in my (old) <br>computer. <br><br>I use the following packages as part of a .sty file; <br><br>%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%<br>%%% Construção de gráficos com PSTricks. <br>%<br><br>\usepackage{multido}<br>\usepackage[showerrors,dvipsnames]{pstricks} % prologue (this option removes theorem's frame and the like) <br>\usepackage{pst-infixplot,pst-math,pst-plot,pst-func,pst-3dplot,pst-vue3d,pst-eucl}<br>\usepackage{pstricks-add} <br>%\usepackage{pst-all} <br>%\usepackage[nopstricks,tightpage]{pst-pdf} % script: ps4pdf-pst file.tex <br><br>%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%<br><br>The code that draws the figure follows. <br><br>\begin{figure}[ht!] %[H]<br>\begin{center}<br>\setlength{\fboxrule}{1pt} \setlength{\fboxsep}{3mm}<br>\fbox{%\framebox[\textwidth]{}<br>%\newrgbcolor{zzttqq}{0.6 0.2 0}<br>\psset{xunit=0.5cm,yunit=0.5cm,algebraic=true,dotstyle=o,dotsize=3pt 0,linewidth=0.8pt,arrowsize=3pt 2,arrowinset=0.25}<br>\begin{pspicture*}(-5.1,-17)(17,7.5)<br>\psaxes[Dx=4,Dy=1,subticks=2]{->}(0,0)(-4.4,-16.5)(16,4.8)[$x$,-135][$y$,-45]<br>\pscircle[linecolor=red](2.5,3.1754264805){2.020726442}<br>%part in fourth quadrant in green not too low<br>\psclip{\psframe[linestyle=none](-5,-16)(14,4)}<br>\psplotImp[algebraic,linecolor=green,linewidth=2pt,stepFactor=0.1](-6.1,-18)(19,5){ y*(x^2-10*x+y^2)*11/14+(x^3-5*x^2+y^2*x+5*y^2)*5*sqrt(3)/14 }\endpsclip<br>%overdraw part in second quadrant with yellow funciona deixei em % ,stepFactor=0.1<br>%\psclip{\psframe[linestyle=none](-5,0)(0,4)} %tira %<br>%\psplotImp[algebraic,linecolor=yellow,linewidth=2pt](-6.1,-18)(19,5){% tira % %y*(x^2-10*x+y^2)*11/14+(x^3-5*x^2+y^2*x+5*y^2)*5*sqrt(3)/14 }\endpsclip %tira %<br>%overdraw part in first quadrant with magenta<br>\psclip{\psframe[linestyle=none](0,0)(6,4)}<br>\psplotImp[algebraic,linecolor=Magenta,linewidth=2pt,stepFactor=0.1](-6.1,-18)(19,5){ y*(x^2-10*x+y^2)*11/14+(x^3-5*x^2+y^2*x+5*y^2)*5*sqrt(3)/14 }\endpsclip<br>%overdraw part in fourth quadrant with blue<br>\psclip{\psframe[linestyle=none](0,0)(6,-2)}<br>\psplotImp[algebraic,linecolor=blue,linewidth=2pt](-6.1,-18)(19,5){ y*(x^2-10*x+y^2)*11/14+(x^3-5*x^2+y^2*x+5*y^2)*5*sqrt(3)/14 }\endpsclip<br>\rput[tl](6.1,5.9){\red{$\Gamma$}}<br>%\psplotImp[algebraic,linecolor=red](-4,-4)(4,4){x^2-y^2-1} %(-6,-18)(18,8)<br>%\psplotImp[algebraic,linecolor=yellow](-4,-4)(4,4){x^2-y^2-4} %(-6,-18)(18,8)<br>%\psplot[algebraic,linecolor=zzttqq,linewidth=2pt]{0}{12}{sqrt(x)} %blue<br>\end{pspicture*}}<br>\caption{Lugar geométrico de $D_{_{\!b}}$ e $E_{_{b}}$ quando $\mathbf A$ percorre $\Gamma$.} %$\mbfA$ $\mathbf A$<br>\label{figuraexer29b}<br>\end{center}<br>\end{figure}<br><br>Thank you for your help. <br><br>Regards, <br>Luis <br><br><br> </div></body>
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