在下面的代码中，我想从最后一个菱形到最上面的菱形画一条线，如下面的 ascii-art 所示
/\
|---/ \
/\ | \ /
/ \ | \/
\ /------
\/
你能告诉我如何实现上述排列吗？另外，我该如何水平circle2对齐setloadavg？
使用我当前的代码，垂直线相互重叠。我从 tex 代码输出的内容如下：
\documentclass{article}
\usepackage{tikz}
\usepackage{fixltx2e}
\usetikzlibrary{shapes,arrows}
\usetikzlibrary{positioning}
\usepackage[active,tightpage]{preview}
\PreviewEnvironment{tikzpicture}
\setlength\PreviewBorder{5pt}%
%%%>
\begin{document}
\pagestyle{empty}
% Define block styles
\tikzstyle{decision} = [diamond, draw, fill=blue!20,
text width=4.5em, text badly centered, node distance=3cm, inner sep=0pt]
\tikzstyle{block} = [rectangle, draw, fill=blue!20,
text width=10em, text centered, rounded corners, minimum height=4em]
\tikzstyle{mycircle} = [circle, thick, draw=orange, minimum height=4mm]
\tikzstyle{line} = [draw, -latex']
\tikzstyle{cloud} = [draw, ellipse,fill=red!20, node distance=3cm,
minimum height=2em]
\begin{tikzpicture}[align=center,node distance = 2cm, auto]
% Place nodes
\node [block] (init) {Read system data};
\node [mycircle, below left of=init, node distance=4cm] (circle2) {2};
\node [block, below of=init, node distance=2cm] (setloadavg) {Set average loading level to L\textsubscript{avg}=[0.8,0.9,1,1.1]};
\node [decision, right of=setloadavg, node distance=8cm] (final) {Is K=N(no. of runs)?};
\node [mycircle, right of=final, node distance=3cm] (circle5) {2};
\node [mycircle, below of=final, node distance=3cm] (circle6) {1};
\node [block, below of=setloadavg, node distance=2cm] (startsim) {Start simulation (run 1) to generate cascade data, K=0};
\node [block, below of=startsim, node distance=2cm] (setloadlevel) {Set Loading level=L\textsubscript{avg} where varies between +0.5 to -0.5, K=K+1};
\node [block, below of=setloadlevel, node distance=2cm] (runloadflow) {Remove line randomly and run load flow};
\node [block, below of=runloadflow, node distance=2cm] (checkoverload) {Check for line overloads};
\node [decision, below of=checkoverload, node distance=3cm] (decision1) {Is any line overloaded?};
\node [mycircle, right of=decision1, node distance=3cm] (circle3) {1};
\node [block, below of=decision1, node distance=3cm] (trip) {Trip the line and note the instant time of trip};
\node [decision, below of=trip] (reachedsat) {Reached saturation?};
\node [mycircle, below of=reachedsat, node distance=2cm] (circle4) {1};
% Draw edges
\path [line] (init) -- (setloadavg);
\path [line] (circle2) -- (setloadavg);
\path [line] (setloadavg) -- (startsim);
\path [line] (startsim) -- (setloadlevel);
\path [line] (setloadlevel) -- (runloadflow);
\path [line] (runloadflow) -- (checkoverload);
\path [line] (checkoverload) -- (decision1);
\path [line] (decision1) -- node [near start] {No} (circle3);
\path [line] (decision1) -- node [near start] {Yes} (trip);
\path [line] (trip) -- (reachedsat);
\path [line] (reachedsat) -- node [near start] {No} (circle4);
\path [line] (reachedsat) -| node [near start] {Yes} (final);
\path [line] (final) -- node [near start] {No} (circle5);
\path [line] (final) -- node [near start] {Yes} (circle6);
\end{tikzpicture}
\end{document}
谢谢
答案1
\path [line] (reachedsat) -- node [near start] {Yes} ++(5,0) |- (final);
这是您清理后的代码：
\documentclass[tikz,border=5]{standalone}
\usetikzlibrary{shapes,arrows}
\usetikzlibrary{positioning}
\usepackage{fixltx2e}
\begin{document}
\pagestyle{empty}
% Define block styles
\tikzset{decision/.style = {diamond, draw, fill=blue!20,
text width=4.5em, text badly centered, inner sep=0pt},
block/.style = {rectangle, draw, fill=blue!20,
text width=10em, text centered, rounded corners, minimum height=4em},
mycircle/.style = {circle, thick, draw=orange, minimum height=4mm},
line/.style = {draw, -latex'},
cloud/.style = {draw, ellipse,fill=red!20, minimum height=2em}
}
\begin{tikzpicture}[align=center, auto]
% Place nodes
\node [block] (init) {Read system data};
\node [block, below = of init] (setloadavg) {Set average loading level to L\textsubscript{avg}=[0.8,0.9,1,1.1]};
\node [mycircle, left = of setloadavg] (circle2) {2};
\node [decision, right = 4cm of setloadavg, ] (final) {Is K=N(no. of runs)?};
\node [mycircle, right =of final, ] (circle5) {2};
\node [mycircle, below = of final, ] (circle6) {1};
\node [block, below = of setloadavg, ] (startsim) {Start simulation (run 1) to generate cascade data, K=0};
\node [block, below = of startsim, ] (setloadlevel) {Set Loading level=L\textsubscript{avg} where varies between +0.5 to -0.5, K=K+1};
\node [block, below =of setloadlevel, ] (runloadflow) {Remove line randomly and run load flow};
\node [block, below =of runloadflow, ] (checkoverload) {Check for line overloads};
\node [decision, below = of checkoverload, ] (decision1) {Is any line overloaded?};
\node [mycircle, right = of decision1, ] (circle3) {1};
\node [block, below = of decision1,] (trip) {Trip the line and note the instant time of trip};
\node [decision, below =of trip] (reachedsat) {Reached saturation?};
\node [mycircle, below = of reachedsat, ] (circle4) {1};
% Draw edges
\path [line] (init) -- (setloadavg);
\path [line] (circle2) -- (setloadavg);
\path [line] (setloadavg) -- (startsim);
\path [line] (startsim) -- (setloadlevel);
\path [line] (setloadlevel) -- (runloadflow);
\path [line] (runloadflow) -- (checkoverload);
\path [line] (checkoverload) -- (decision1);
\path [line] (decision1) -- node [near start] {No} (circle3);
\path [line] (decision1) -- node [near start] {Yes} (trip);
\path [line] (trip) -- (reachedsat);
\path [line] (reachedsat) -- node [near start] {No} (circle4);
\path [line] (reachedsat) -- node [near start] {Yes} ++(4,0) |- (final);
\path [line] (final) -- node [near start] {No} (circle5);
\path [line] (final) -- node [near start] {Yes} (circle6);
\end{tikzpicture}
\end{document}
