# [pstricks] Is a small red horizontal line a bug?

Manfred Braun manfred.braun at uni-due.de
Tue Apr 22 21:21:18 CEST 2014

Hi,

It seems that \pstextpath cannot handle all compound symbols correctly. The small horizontal line is the horizontal bar of the square root symbol, and it is not correspondingly rotated and placed along the path. If you replace $\sqrt x$ by $\surd x$, the line disappears, but the square root symbol is still displayed only in its "short" form, without the bar. The same effect appears, if you try to typeset $\frac{a}{b}$ along a path.

Manfred

On 22.04.2014, at 21:16, Donut E. Knot wrote:

> Dear folks,
>
>
> Please consider the following code.
>
> \documentclass[pstricks,border=12pt,12pt]{standalone}
> \usepackage{pst-plot,pst-text}
> \psset{unit=4cm}
>
> \def\f{sqrt(x)}
> \def\g{x}
>
> \begin{document}
> \multido{\r=-1.0+0.1}{18}{%
> \begin{pspicture}[algebraic,plotpoints=200](-1,-1)(2.25,2.25)
> 	\psaxes{->}(0,0)(-1,-1)(2,2)[$x$,0][$y$,90]%
> 	\pstextpath[r](0,.1){\psplot[linecolor=blue]{-.5}{1.5}{\g}}{\textcolor{blue}{$g(x)= x$}}%
>
> 	\pstextpath[c](\r,.1){\psplot[linecolor=red]{0}{1.5}{\f}}{\textcolor{red}{$f(x)=\sqrt x$}}%
> \end{pspicture}}
> \end{document}
>
> There is a small red horizontal line as shown in this figure http://i.stack.imgur.com/mVTOu.gif. Is it a bug?
>
>
>
>
> best regards,
>
>
> I am who I say I am
> (http://tex.stackexchange.com/users/19356)
>
> View on i.stack.imgur.com
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>
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