[pstricks] mark zeros

[Vincent McGarry]

On Jun 1, 2008, at 2:50 PM, Doris Wagner wrote:

> hi list again,
>
> the option markZeros of \psPolynomial seems to mark also the x-
> coordinate of the minimum of the following parabola. is that a bug?
>
> \documentclass[12pt]{scrartcl}%pstricks
> \textheight=27cm
>
> \usepackage{pstricks}\usepackage{pst-func}
>
> \begin{document}
>
> \psset{unit=.7cm}
> \begin{pspicture*}(-6,-7)(6,30)
>
> \psaxes
> [arrowscale=2,Dx=5,dx=5,Dy=5,dy=5,linewidth=1.5pt,tickwidth=1.5pt]{->}
> (0,0)(-5.9,-6.9)(5.9,29.5)
> \psset{dotsize=7pt}
> \psPolynomial[markZeros,linecolor=blue,linewidth=2pt,coeff=-6 -1
> 1,plotpoints=100]{-6}{6}
>
> \end{pspicture*}
>
> \end{document}
>
>
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You have to set dZero.

\psPolynomial
[dZero=0.01,markZeros,linecolor=blue,linewidth=2pt,coeff=-6 -1  
1,plotpoints=100]{-6}{6} % dZero=0.01
                        ^^^^^^^^^^
Vince McGarry