%% %% The LaTeX Graphics Companion, 2ed (first printing May 2007) %% %% Example 6-1-39 on page 331. %% %% Copyright (C) 2007 Michel Goossens, Frank Mittelbach, Denis Roegel, Sebastian Rahtz, Herbert Vo\ss %% %% It may be distributed and/or modified under the conditions %% of the LaTeX Project Public License, either version 1.3 %% of this license or (at your option) any later version. %% %% See http://www.latex-project.org/lppl.txt for details. %% \documentclass{ttctexa} \pagestyle{empty} \setcounter{page}{6} \setlength\textwidth{159.83385pt} \StartShownPreambleCommands \usepackage{pstricks,pst-plot} \StopShownPreambleCommands \begin{document} \psset{xunit=0.025cm,yunit=4cm} \begin{pspicture}(-0.1,-0.25)(190,1.1) \psgrid[subgriddiv=0,griddots=5, gridlabels=0pt,xunit=30,yunit=0.2](6,5) \psaxes[linewidth=1pt,ticks=none,Dx=30, Dy=0.2]{->}(190,1.1) \uput{0.5}[0](180,0){$\mathbf{\alpha}$} \uput{0.5}[90](0,1){$\mathbf{I/I_0}$} \psset{linewidth=1.5pt,linecolor=blue} \psplot{0}{180}{1 x 180 div sub 1 6.28 div x 2 mul sin mul add abs sqrt} \psplot[linestyle=dashed]{90}{180}{ 2 x 90 div sub x 2 mul cos 2 add mul x 2 mul sin 3 3.15 div mul add abs sqrt} \rput(50,0.75){$\varphi=0$} \rput(125,0.9){$\varphi=\pi/2$} \end{pspicture} \end{document}