[pstricks] implicit plots

[Michael Sharpe]

On May 8, 2010, at 7:53 AM, Zbigniew Nitecki wrote:

> The following code (as minimal as it gets, except for calling un-needed ps packages)
> is intended to draw the ellipse 
> 	5x^2-6xy+5y^2=5:
> 
>> %!TEX TS-program =  latex
>> \listfiles
>> \documentclass[11pt]{article}
>> \usepackage{pst-plot, pst-math}
>> \usepackage{pst-solides3d}
>> \usepackage{pst-3dplot, pst-func}
>> \usepackage{pst-grad}
>> \usepackage{pstricks-add}
>> 
>> \begin{document}
>> 		\begin{pspicture}(-3,-3)(3,3)
>> 			\psplotImp[algebraic](-4,-4)(4,4){5*x^{2}-6*x*y+5*y^{2}-5}
>> 		\end{pspicture}
>> 
>> \end{document}  


It seems that the algebraic parser does not like the braces around the exponents. When I removed those, everything worked.

Michael