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-rw-r--r--buch/chapters/60-gruppen/images/phasenraum.pdfbin0 -> 24581 bytes
-rw-r--r--buch/chapters/60-gruppen/images/phasenraum.tex45
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diff --git a/buch/chapters/60-gruppen/images/phasenraum.pdf b/buch/chapters/60-gruppen/images/phasenraum.pdf
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diff --git a/buch/chapters/60-gruppen/images/phasenraum.tex b/buch/chapters/60-gruppen/images/phasenraum.tex
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+%
+% phasenraum.tex --
+%
+% (c) 2021 Prof Dr Andreas Müller, OST Ostschweizer Fachhochschule
+%
+\documentclass[tikz]{standalone}
+\usepackage{amsmath}
+\usepackage{times}
+\usepackage{txfonts}
+\usepackage{pgfplots}
+\usepackage{csvsimple}
+\usetikzlibrary{arrows,intersections,math}
+\begin{document}
+\def\skala{1}
+\begin{tikzpicture}[>=latex,thick,scale=\skala]
+
+\pgfmathparse{1/sqrt(2)}
+\xdef\o{\pgfmathresult}
+
+\def\punkt#1#2{ ({#2*cos(#1)},{\o*#2*sin(#1)}) }
+
+\foreach \r in {1,2,...,6}{
+ \draw[line width=0.5pt]
+ plot[domain=0:359,samples=360]
+ ({\r*cos(\x)},{\o*\r*sin(\x)}) -- cycle;
+}
+\draw[color=red,line width=1.4pt]
+ plot[domain=0:359,samples=360]
+ ({4*cos(\x)},{\o*4*sin(\x)}) -- cycle;
+
+\draw[->] (-6.1,0) -- (6.3,0) coordinate[label={$x$}];
+\draw[->] (0,-4.4) -- (0,4.7) coordinate[label={right:$p$}];
+
+\node at \punkt{0}{4} [below right] {$x_0$};
+\node at \punkt{90}{4} [above left] {$\omega x_0$};
+
+\fill[color=white] \punkt{60}{4} rectangle \punkt{58}{5.9};
+
+\fill[color=red] \punkt{60}{4} circle[radius=0.08];
+\node[color=red] at \punkt{60}{4} [above right]
+ {$\begin{pmatrix}x(t)\\p(t)\end{pmatrix}$};
+
+\end{tikzpicture}
+\end{document}
+