Hacer psdot más grueso en ancho

Question

Estoy intentando crear una recta numérica pero el psdot no está en negrita ni es lo suficientemente grueso, debería ser el mismo que el ancho de la flecha.

El ancho de línea no parece ayudar, este es el código completo.

\begin{figure}[H]
\psset{xunit=1.0cm,yunit=1.0cm,algebraic=true,dimen=middle,dotstyle=o,dotsize=3pt 0,linewidth=0.8pt,arrowsize=3pt 2,arrowinset=0.25}
\begin{pspicture*}(-4.3,-3.12)(7.3,6.3)
\psline{->}(0.,0.)(6.,0.)
\psline(1.,0.2)(1.,-0.2)
\psline(1.,0.2)(1.,-0.2)
\psline(1.,0.2)(1.,-0.2)
\psline(2.,0.2)(2.,-0.2)
\psline(3.,0.2)(3.,-0.2)
\psline(4.,0.2)(4.,-0.2)
\psline(5.,-0.2)(5.,0.2)
\rput[tl](2.94,-0.3){5}
\rput[tl](1.94,-0.3){4}
\rput[tl](0.94,-0.32){3}
\rput[tl](3.94,-0.3){6}
\rput[tl](4.94,-0.32){7}
\psline{->}(2.98,0.42)(4.98,0.42)
\psdots[linewidth=8pt,dotsize=5pt 0](2.98,0.42)
\end{pspicture*}
\end{figure}

Answer 1

No creo que \psdotsse pueda cambiar el grosor (verhttps://tex.stackexchange.com/a/73087/27635).

Puede colocar un \pscircleencima, como solución alternativa.

MWE:

\documentclass{article}

\usepackage{pstricks}

\begin{document}
\begin{figure}[H]
\psset{xunit=1.0cm,yunit=1.0cm,algebraic=true,dimen=middle,dotstyle=o,linewidth=0.8pt,arrowsize=3pt 2,arrowinset=0.25}
\begin{pspicture*}(-4.3,-3.12)(7.3,6.3)
\psline{->}(0.,0.)(6.,0.)
\psline(1.,0.2)(1.,-0.2)
\psline(1.,0.2)(1.,-0.2)
\psline(1.,0.2)(1.,-0.2)
\psline(2.,0.2)(2.,-0.2)
\psline(3.,0.2)(3.,-0.2)
\psline(4.,0.2)(4.,-0.2)
\psline(5.,-0.2)(5.,0.2)
\rput[tl](2.94,-0.3){5}
\rput[tl](1.94,-0.3){4}
\rput[tl](0.94,-0.32){3}
\rput[tl](3.94,-0.3){6}
\rput[tl](4.94,-0.32){7}
\psline{->}(2.98,0.42)(4.98,0.42)
\psdots[dotsize=5pt 0](2.98,0.42)
\pscircle(2.98,0.42){2.5pt}
\end{pspicture*}
\end{figure}
\end{document} 

Producción

Answer 2

Hay un argumento opcional arrowLW(arrowLineWidth)

\documentclass{article}
\pagestyle{empty}
\usepackage{pst-plot}
\begin{document}

\psset{linewidth=0.8pt,arrowsize=3pt 2,arrowinset=0.25}
\begin{pspicture*}(-1,-1)(8,1)
\psaxes[yAxis=false,Ox=3]{->}(0,0)(-0.9,0)(5,0)
\psline[arrowscale=1.5,arrowLW=2pt]{o->}(2,0.42)(4,0.42)
\end{pspicture*}

\end{document}