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[ In reference to "Plotting the spirograph equations with 'gnuplot'" in LG#133 ]
Sonja Schmid [schmid.sonja at gmx.ch]
Dear Víctor Luaña,
I just saw how you drew these labels of the angles in Fig. 1 on page http://linuxgazette.net/133/luana.html . Could you tell me what gnuplot code you use to do so??
Thanks very much in advance!
Sonja
Victor Lua~na Cabal [victor at carbono.quimica.uniovi.es]
> From: Ben Okopnik <ben@linuxgazette.net> > ----- Forwarded message from Sonja Schmid <schmid.sonja@gmx.ch> ----- > > From: Sonja Schmid <schmid.sonja@gmx.ch> > To: tag@lists.linuxgazette.net > Date: Thu, 30 Jul 2009 09:48:13 +0200 > Subject: [TAG] tkb: Talkback:133/luana.html > Reply-To: The Answer Gang <tag@lists.linuxgazette.net> > Sender: tag-bounces@lists.linuxgazette.net > > Dear Víctor Luaña, > > I just saw how you drew these labels of the angles in Fig. 1 on page > http://linuxgazette.net/133/luana.html . > Could you tell me what gnuplot code you use to do so?? > > Thanks very much in advance!
Sonja,
Where all the rest of figures in the article have been done with gnuplot, Fig 1 was produced with pstricks, a drawing package for the TeX/LaTeX typesetting software. Just in case you keep interested I reproduce below the code used. Noticed that it has not been optimized in any way: just some dirt and quick code to produce the illustration. Pstricks is an impressive tool for producing technical drawings but requires a careful planning. Check <http://tug.org/PSTricks/main.cgi/> for an extensive set of examples and documentation.
Let me know if I can be of further help.
Best regards, Víctor Luaña
Image code follows. Save the file as spiro1.tex and compile it with latex with the pstricks package installed:
\documentclass[a4paper,12pt]{article}
\usepackage[dvipsnames]{pstricks}
%\usepackage{xcolor}
\usepackage{pst-plot}
\usepackage{pst-node}
\parindent=0pt
\makeatletter
\begin{document}
\pagestyle{empty}
%\large
\psset{unit=1cm}
\definecolor{gr00}{gray}{0.0}
\definecolor{gr01}{gray}{0.1}
\definecolor{gr02}{gray}{0.2}
\definecolor{gr03}{gray}{0.3}
\definecolor{gr04}{gray}{0.4}
\definecolor{gr05}{gray}{0.5}
\definecolor{gr06}{gray}{0.6}
\definecolor{gr07}{gray}{0.7}
\definecolor{gr08}{gray}{0.8}
\definecolor{gr09}{gray}{0.9}
\begin{pspicture}(-5,-5)(5,5)
\begingroup
%\psgrid[gridcolor=Peach%
% ,subgridcolor=Apricot%
% ,gridlabelcolor=Red%
% ,subgriddiv=1%
% ,griddots=10%
% ,gridlabels=9pt](-5,-5)(5,5)
\psset{arrowsize=4pt 4, arrowlength=2, arrowinset=0.4}
\psset{dotscale=1.3}
\SpecialCoor
\begingroup
\psset{linecolor=gr09}
\parametricplot[plotstyle=line,plotpoints=201]{0}{720}%
{t cos 3.5 mul t 3.5 mul cos 1.5 mul add %
t sin 3.5 mul t 3.5 mul sin 1.5 mul sub}
\endgroup
\psdots(0,0)
\pscircle(0,0){4.5}
\begingroup
\psset{linecolor=gr00}
\psline[linestyle=dotted]{-}(0,0)(3.5,0)
\pscircle(3.5,0){1}
\psline[linewidth=2pt]{-}(3.5,0)(5,0)
\psdots(4.5,0)(3.5,0)(5,0)
\endgroup
%%%\begingroup
%%% \psset{linecolor=gr06}
%%% \psline[linestyle=dotted]{-}(0,0)(3.5;10)
%%% \pscircle(3.5;10){1}
%%% \pswedge[fillstyle=solid,fillcolor=gr03](0,0){0.6}{0}{10}
%%% \psline[linewidth=2pt]{-}(3.5;10)%
%%% (!10 cos 3.5 mul 10 3.5 mul cos 1.5 mul add %
%%% 10 sin 3.5 mul 10 3.5 mul sin 1.5 mul sub)
%%%\endgroup
\begingroup
\psset{linecolor=gr00}
%\psline[linestyle=dotted]{-}(0,0)(3.5;49)
\psline[linestyle=dotted]{-}(0,0)(5.5;49)
\pnode(3.5;49){Oprime}
\pnode(!49 cos 3.5 mul 49 3.5 mul cos 1.5 mul add %
49 sin 3.5 mul 49 3.5 mul sin 1.5 mul sub){P}
\pnode(4.5;0){Q}
\pnode(4.5;49){S}
\pnode(!49 cos 3.5 mul 49 3.5 mul cos 1.0 mul add %
49 sin 3.5 mul 49 3.5 mul sin 1.0 mul sub){T}
%\pnode(!49 cos 3.5 mul 49 3.5 mul cos 0.5 mul add %
% 49 sin 3.5 mul 49 3.5 mul sin 0.5 mul sub){W}
\psdots(Oprime)(P)(Q)(S)(T)
\uput[215](0,0){O}
\uput[115](Oprime){O$^\prime$}
\uput[135](P){P}
\uput[50](Q){Q}
\uput[90](S){S}
\uput[115](T){T}
\pscircle(Oprime){1}
\pswedge[fillstyle=solid,fillcolor=gr03](0,0){0.6}{0}{49}
\uput{17.5pt}[25](O){$\varphi$}
\psline[linestyle=dotted]{-}(Oprime)%
(!49 cos 3.5 mul 2.0 add 49 sin 3.5 mul)
\pswedge[fillstyle=solid,fillcolor=gr03](Oprime){0.6}{0}{49}
\uput{17.5pt}[25](Oprime){$\varphi$}
\pswedge[fillstyle=solid,fillcolor=gr05](Oprime){0.4}{-171.5}{0}
\uput{14pt}[-85.75](Oprime){$\beta$}
\psline[linewidth=2pt]{-}(Oprime)(P)
\parametricplot[plotstyle=line,plotpoints=51]{0}{49}%
{t cos 3.5 mul t 3.5 mul cos 1.5 mul add %
t sin 3.5 mul t 3.5 mul sin 1.5 mul sub}
\endgroup
\begingroup
\psset{arrowsize=3pt 3, arrowlength=1.2, arrowinset=0.3}
\psset{linecolor=Blue}
\psline{|<->|}(0,-1.2)(4.5,-1.2)
\uput[-90](2.25,-1.2){$R$}
\psline{|<->|}(3.5,-2.2)(2.5,-2.2)
\uput[-90](3.0,-2.2){$r$}
\psline{|<->|}(3.5,-2.2)(5.0,-2.2)
\uput[-90](4.25,-2.2){$p$}
\endgroup
\endgroup
\end{pspicture}
\normalsize
\end{document}