Graphics, Figures & Tables ⇒ Plotting ln(x-3)^2

[coachbennett1981]

I am trying to plot the function ln(x-3)^2 in pstricks, but I am getting a parabolic shape graph that does not work. Does anyone know what is wrong with my code?

Code: Select all

\documentclass{article}
\usepackage{pstricks-add}
\begin{document}
begin{pspicture}(0,-3)(5,3)
\psaxes{->}(0,0)(-4,-4)(5,4)[$x$,-90][$y$,180]
\psplot[algebraic,linecolor=red,linewidth=2pt,arrows=<->]{-4}{2.9}{ln(3-x)}
\psplot[algebraic,linecolor=blue,linewidth=2pt,arrows=<->]{3.1}{6}{ln(x-3)^2}
\uput[90](4.2,-1.5){\textcolor{red}{$f(x)=\ln(3-x)$}}
\end{pspicture}

Thank you for your time.

Nick

[localghost]

»Does not work« is a trivial statement. Please explain what is wrong in your opinion. Supplemented to a full example I have no problem with this code.


Best regards
Thorsten

[CrazyHorse]

I am trying to plot the function ln(x-3)^2 in pstricks, but I am getting a parabolic shape graph that does not work. Does anyone know what is wrong with my code?

Code: Select all

\documentclass{article}
\usepackage{pstricks-add}
\begin{document}
begin{pspicture}(0,-3)(5,3)
\psaxes{->}(0,0)(-4,-4)(5,4)[$x$,-90][$y$,180]
\psplot[algebraic,linecolor=red,linewidth=2pt,arrows=<->]{-4}{2.9}{ln(3-x)}
\psplot[algebraic,linecolor=blue,linewidth=2pt,arrows=<->]{3.1}{6}{ln(x-3)^2}
\uput[90](4.2,-1.5){\textcolor{red}{$f(x)=\ln(3-x)$}}
\end{pspicture}

1. please provide working examples and not incomplete and
wrong ones ...

2. "that does not work" can mean anything ...

I have no problem ...

Herbert

[coachbennett1981]

Sorry about the "trivial statements" I need to be sure to be more complete next time.

[localghost]

Sorry about the "trivial statements" I need to be sure to be more complete next time.

And what about your problem? In case it is solved, please post the solution here. For comparison see the attachment. Don't forget to mark the topic as solved by editing your initial post and choosing the green checkmark from the icon list.

[CrazyHorse]

Sorry about the "trivial statements" I need to be sure to be more complete next time.

And what about your problem? In case it is solved, please post the solution here. For comparison see the attachment. Don't forget to mark the topic as solved by editing your initial post and choosing the green checkmark from the icon list.

a PSTricks output looks nicer than a gnuplot one ...

Herbert

[localghost]

[...] a PSTricks output looks nicer than a gnuplot one [...]

Of course I'm aware of this fact. The plot has been attached only for comparison since the OP mentioned something about a parabolic shape which sounded to me like he was not sure if he got the right output. The difference in quality is out of question. And I would have done the graph just like you did, but in a psgraph environment.

[coachbennett1981]

Thank you guys