我输入了一个流程图：
如您所见，“extrahiere Topologie”的箭头直接指向“Simulationsstart”节点。我希望箭头以矩形形式定位到节点，如下所示：
代码如下：
\documentclass[11pt,a4paper,DIV=calc]{scrartcl}
\usepackage[autooneside=false,automark,markcase=ignoreuppercase,headsepline,plainheadsepline]{scrlayer-scrpage}
\usepackage[left=2cm,right=2cm,top=2cm,bottom=3cm]{geometry}
\usepackage{mwe}
\usepackage{tikz}
\usetikzlibrary{shapes,arrows,positioning,decorations.markings,calc}
\usepackage{microtype}
\definecolor{tkblue}{rgb}{0,0.212,0.369}
\usepackage{pstricks}
\usepackage{pst-plot}
\usepackage{pst-pdf}
\usepackage{multirow}
\usepackage{array,cellspace}
\setlength\cellspacetoplimit{4pt}
\setlength\cellspacebottomlimit{4pt}
\usepackage{float}
\usepackage{tikz}
\usepackage{pdflscape}
\usepackage{trees}
\begin{document}
\usetikzlibrary{arrows.meta}
\tikzset{%
>={Latex[width=2mm,length=2mm]},
% Specifications for style of nodes:
base/.style = {rounded corners, draw=black,
minimum width=4cm, minimum height=1cm,
text centered, font=\sffamily},
activityStarts/.style = {rectangle,base, fill=tkblue!50},
test/.style = {base, diamond, aspect=2, fill=tkblue!40},
startstop/.style = {base, fill=red!40},
activityRuns/.style = {base, fill=green!30},
process/.style = {base, minimum width=2.5cm, fill=tkblue!15,
font=\ttfamily},
mark/.style = {draw,circle,black,node distance=1.5cm,fill=black!15},
}
\newpage
\begin{landscape}
\begin{tikzpicture}[node distance=4cm,
every node/.style={fill=white, font=\sffamily}, align=center]
% Specification of nodes (position, etc.)
\node (start) [activityStarts] {Simulationsstart mit\\Parametersatz:};
\node (ausgang) [process, below of=start] {Kalkuliere Ausgangsgrößen $\vec{y}$};
\node (wechsel) [test, below of=ausgang] {Schaltzustandswechsel?};
\node (loop) [test, right of=wechsel, xshift=4cm] {Loop detektiert?};
\node (Stop) [startstop, right of=loop,xshift=3cm] {Simulationsstop};
\node (Toggle) [process,right of=ausgang, xshift=4cm] {extrahiere Topologie};
\node (next) [process, below of=wechsel] {Nächster Simulationsschritt};
% Specification of lines between nodes specified above
% with aditional nodes for description
\draw[->] (start) -- node[text width=7.5cm]{Beaufschlagung des Systems mit den aktuellen Eingangs- und Zustandsgrößen} (ausgang);
\draw[->] (ausgang) -- node[text width=7.5cm] {In Abhängigkeit der Blockanordnung wird das Zustandsraummodell gelöst} (wechsel);
\draw[->] (wechsel) -- node[text width=0.5cm]{Nein} (next);
\draw[->] (wechsel) -- node[text width=0.5cm]{Ja} (loop);
\draw[->] (loop) -- node[text width=0.5cm] {Ja} (Stop);
\draw[->] (loop) -- node[text width=0.5cm] {Nein} (Toggle);
\draw[->] (Toggle) -- (start);
\end{tikzpicture}
\end{landscape}
\end{document}
如果有人能帮助我那就太好了！
答案1
正如 3.1.4b 手册第 153 页所述：
\path … |- <坐标或循环> …;
此操作的意思是“先纵，后横”。
因此，只需先垂直画一条线，然后从节点水平画一条线(toggle)到(start)
\draw[->] (Toggle) |- (start);
\documentclass[11pt,a4paper,DIV=calc]{scrartcl}
\usepackage[autooneside=false,automark,markcase=ignoreuppercase,headsepline,plainheadsepline]{scrlayer-scrpage}
\usepackage[left=2cm,right=2cm,top=2cm,bottom=3cm]{geometry}
\usepackage{mwe}
\usepackage{tikz}
\usetikzlibrary{shapes,arrows,positioning,decorations.markings,calc}
\usepackage{microtype}
\definecolor{tkblue}{rgb}{0,0.212,0.369}
\usepackage{pstricks}
\usepackage{pst-plot}
\usepackage{pst-pdf}
\usepackage{multirow}
\usepackage{array,cellspace}
\setlength\cellspacetoplimit{4pt}
\setlength\cellspacebottomlimit{4pt}
\usepackage{float}
\usepackage{tikz}
\usepackage{pdflscape}
\usepackage{trees}
\begin{document}
\usetikzlibrary{arrows.meta}
\tikzset{%
>={Latex[width=2mm,length=2mm]},
% Specifications for style of nodes:
base/.style = {rounded corners, draw=black,
minimum width=4cm, minimum height=1cm,
text centered, font=\sffamily},
activityStarts/.style = {rectangle,base, fill=tkblue!50},
test/.style = {base, diamond, aspect=2, fill=tkblue!40},
startstop/.style = {base, fill=red!40},
activityRuns/.style = {base, fill=green!30},
process/.style = {base, minimum width=2.5cm, fill=tkblue!15,
font=\ttfamily},
mark/.style = {draw,circle,black,node distance=1.5cm,fill=black!15},
}
\newpage
\begin{landscape}
\begin{tikzpicture}[node distance=4cm,
every node/.style={fill=white, font=\sffamily}, align=center]
% Specification of nodes (position, etc.)
\node (start) [activityStarts] {Simulationsstart mit\\Parametersatz:};
\node (ausgang) [process, below of=start] {Kalkuliere Ausgangsgrößen $\vec{y}$};
\node (wechsel) [test, below of=ausgang] {Schaltzustandswechsel?};
\node (loop) [test, right of=wechsel, xshift=4cm] {Loop detektiert?};
\node (Stop) [startstop, right of=loop,xshift=3cm] {Simulationsstop};
\node (Toggle) [process,right of=ausgang, xshift=4cm] {extrahiere Topologie};
\node (next) [process, below of=wechsel] {Nächster Simulationsschritt};
% Specification of lines between nodes specified above
% with aditional nodes for description
\draw[->] (start) -- node[text width=7.5cm]{Beaufschlagung des Systems mit den aktuellen Eingangs- und Zustandsgrößen} (ausgang);
\draw[->] (ausgang) -- node[text width=7.5cm] {In Abhängigkeit der Blockanordnung wird das Zustandsraummodell gelöst} (wechsel);
\draw[->] (wechsel) -- node[text width=0.5cm]{Nein} (next);
\draw[->] (wechsel) -- node[text width=0.5cm]{Ja} (loop);
\draw[->] (loop) -- node[text width=0.5cm] {Ja} (Stop);
\draw[->] (loop) -- node[text width=0.5cm] {Nein} (Toggle);
\draw[->] (Toggle) |- (start);
\end{tikzpicture}
\end{landscape}
\end{document}