[pstricks] markZeros

[McGarry Vince]

The following incorrectly marks a zero at the x-coordinate of vertex  
of the parabola.

\documentclass{minimal}

\usepackage{pstricks}
\usepackage{pstricks-add}
\usepackage{pst-func}

\begin{document}

\psset{xunit=0.2,yunit=0.06,Dx=5,Dy=20,plotpoints=720}
\begin{pspicture*}(-7,-24)(13,24)
	\psPolynomial[dotscale=1.6,coeff=13 -12 1,markZeros=true]{-7}{13}
	\psaxes(0,0)(-7,-24)(13,24)
\end{pspicture*}

\end{document}


Vince McGarry
Associate Professor of Mathematics
Austin Community College
Rio Grande Campus
vince at austincc.edu
(512) 223-3358