我目前正在制作一个流程图来描述算法中模块的依赖关系。有几个分支，这些分支在某个时刻重新连接。因为我的算法仍在变化，所以流程图将会更新。
我希望让节点（Target_02）重新连接分支，依赖于预分割节点（Origin）的 x 坐标和每个分支中两个最终节点的 y 坐标，方法是取节点（Operation_01cc）和节点（Target_01a）之间 y 值的最低值。
或者：如何比较两个节点之间的坐标？
\documentclass[border={5pt 5pt 5pt 5pt}]{standalone}
\usepackage{tikz}
\usetikzlibrary{arrows.meta}
\tikzset{%
>={Latex[width=2mm,length=2mm]},
% Specifications for style of nodes:
base/.style = {rectangle, rounded corners, draw=black,
minimum width=4cm, minimum height=1cm,
text centered, font=\sffamily},
Table/.style = {base, bottom color=yellow!70, top color=white},
TableTarget/.style = {base, bottom color=green!75!black!70, top color=white},
AnOperation/.style = {base, bottom color=gray!70, top color=white},
finalTarget/.style = {base, bottom color=blue!70, top color=white, draw=blue},
}
\begin{document}
% Drawing part, node distance is 1.5 cm and every node
% is prefilled with white backgroun
\begin{tikzpicture}[node distance=1.5cm,
every node/.style={fill=white, font=\sffamily}, align=center, scale=0.8]
\node (Origin) [Table]{00};
%%%%%%%%%%%%%%%%%%%%%%%%
%%% PREPPING SOURCE. %%%
%%%%%%%%%%%%%%%%%%%%%%%%
\node (Operation_00b) [AnOperation, above of=Origin] {};
\node(Source_00b) [Table, left of=Operation_00b, xshift=-3 cm] {};
\node (Operation_00a) [AnOperation, above of=Operation_00b] {};
\node(Source_00a) [Table, left of=Operation_00a, xshift=-3 cm] {};
\node (Source_Table) [Table, above of=Operation_00a] {};
\draw[->] (Source_Table) -- (Operation_00a);
\draw[->] (Source_00a) -- (Operation_00a);
\draw[->] (Operation_00a) -- (Operation_00b);
\draw[->] (Source_00b) -- (Operation_00b);
\draw[->] (Operation_00b) -- (Origin);
%%%%%%%%%%%%%%%%%%%
%%% BRANCH 01a. %%%
%%%%%%%%%%%%%%%%%%%
\node (Operation_01aa) [AnOperation, below of=Origin, xshift=-9cm] {};
\node (Source_01aa) [Table, left of=Operation_01aa, xshift=-3cm] {};
\node (Operation_01ab) [AnOperation, below of=Operation_01aa] {};
\node (Source_01ab) [Table, left of=Operation_01ab, xshift = -3cm] {};
\node (Operation_00ac) [AnOperation, below of=Operation_01ab] {};
\node (Source_01ac) [Table, left of=Operation_00ac, xshift = -3cm] {};
\node (Target_01a) [TableTarget, below of=Operation_00ac] {01ac};
\draw[->] (Source_01aa) -- (Operation_01aa);
\draw[->] (Origin) -| (Operation_01aa);
\draw[->] (Source_01ab) -- (Operation_01ab);
\draw[->] (Operation_01aa) -- (Operation_01ab);
\draw[->] (Source_01ac) -- (Operation_00ac);
\draw[->] (Operation_01ab) -- (Operation_00ac);
\draw[->] (Operation_00ac) -- (Target_01a);
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%% BRANCH 01c. %%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\node (Operation_01ca) [AnOperation, below of=Origin, xshift=9cm]{};
\node (Source_01ca) [Table,left of=Operation_01ca, xshift=-3cm] {};
\node (Target_01ca) [TableTarget, below of=Operation_01ca] {};
\node (Operation_01cb) [AnOperation,below of=Target_01ca] {};
\node (Target_01cb) [TableTarget, below of=Operation_01cb] {};
\node(Operation_01cc) [AnOperation, below of=Target_01cb] {01cc};
\draw[->] (Source_01ca) -- (Operation_01ca);
\draw[->] (Origin) -| (Operation_01ca);
\draw[->] (Operation_01ca) -- (Target_01ca);
\draw[->] (Target_01ca) -- (Operation_01cb);
\draw[->] (Operation_01cb) -- (Target_01cb);
\draw[->] (Target_01cb) -- (Operation_01cc);
%%%%%%%%%%%%%%%%%%%%%%%%%%
%%% RECOMBINE BRANCHES %%%
%%%%%%%%%%%%%%%%%%%%%%%%%%
\node (Target_02) [TableTarget, below of=Operation_01cc, xshift=-9cm] {};
\draw[->] (Operation_01cc) |- (Target_02);
\draw[->] (Target_01a) |- (Target_02);
%%%%%%%%%%%%%%%%%%%%%%%%%
%%% FURTHER OPERATION %%%
%%%%%%%%%%%%%%%%%%%%%%%%%
\node(Operation_03a) [AnOperation, below of=Target_02] {};
\node(Source_03a) [Table, left of=Operation_03a, xshift=-3cm] {};
\node(Operation_03b) [AnOperation, below of=Operation_03a] {};
\node(Target_03b) [TableTarget, below of=Operation_03b] {};
\node(future) [TableTarget, below of=Target_03b] {};
\draw[->] (Operation_03b) -- (Target_03b);
\draw[->] (Operation_03a) -- (Operation_03b);
\draw[->] (Source_03a) -- (Operation_03a);
\draw[->] (Target_02) -- (Operation_03a);
\draw[->] (Target_03b) -- (future);
%%%%%%%%%%%%%%%%%%%%%
%% THE FINAL TABLE %%
%%%%%%%%%%%%%%%%%%%%%
\node(finalTarget) [finalTarget, below of=future] {};
\draw[->] (future) -- (finalTarget);
\draw[->] (Origin) -- (Target_02);
\end{tikzpicture}
\end{document}
答案1
您可以提取坐标，但使用fit库围绕相关操作和目标节点创建节点可能更容易。
我还推荐该positioning库。below of=等已被弃用。
\documentclass[border=10pt]{standalone}
\usepackage{tikz}
\usetikzlibrary{arrows.meta,fit,positioning}
\tikzset{%
>={Latex[width=2mm,length=2mm]},
base/.style = {rectangle, rounded corners, draw=black, minimum width=4cm, minimum height=1cm, text centered, font=\sffamily},
Table/.style = {base, bottom color=yellow!70, top color=white},
TableTarget/.style = {base, bottom color=green!75!black!70, top color=white},
AnOperation/.style = {base, bottom color=gray!70, top color=white},
finalTarget/.style = {base, bottom color=blue!70, top color=white, draw=blue},
}
\begin{document}
\begin{tikzpicture}[->, node distance=1.5cm, every node/.style={fill=white, font=\sffamily}, align=center, scale=0.8]
\node (Origin) [Table]{00};
\node (Operation_00b) [AnOperation, above of=Origin] {};
\node(Source_00b) [Table, left of=Operation_00b, xshift=-3 cm] {};
\node (Operation_00a) [AnOperation, above of=Operation_00b] {};
\node(Source_00a) [Table, left of=Operation_00a, xshift=-3 cm] {};
\node (Source_Table) [Table, above of=Operation_00a] {};
\draw (Source_Table) -- (Operation_00a);
\draw (Source_00a) -- (Operation_00a);
\draw (Operation_00a) -- (Operation_00b);
\draw (Source_00b) -- (Operation_00b);
\draw (Operation_00b) -- (Origin);
\node (Operation_01aa) [AnOperation, below of=Origin, xshift=-9cm] {};
\node (Source_01aa) [Table, left of=Operation_01aa, xshift=-3cm] {};
\node (Operation_01ab) [AnOperation, below of=Operation_01aa] {};
\node (Source_01ab) [Table, left of=Operation_01ab, xshift = -3cm] {};
\node (Operation_00ac) [AnOperation, below of=Operation_01ab] {};
\node (Source_01ac) [Table, left of=Operation_00ac, xshift = -3cm] {};
\node (Target_01a) [TableTarget, below of=Operation_00ac] {01ac};
\draw (Source_01aa) -- (Operation_01aa);
\draw (Origin) -| (Operation_01aa);
\draw (Source_01ab) -- (Operation_01ab);
\draw (Operation_01aa) -- (Operation_01ab);
\draw (Source_01ac) -- (Operation_00ac);
\draw (Operation_01ab) -- (Operation_00ac);
\draw (Operation_00ac) -- (Target_01a);
\node (Operation_01ca) [AnOperation, below of=Origin, xshift=9cm]{};
\node (Source_01ca) [Table,left of=Operation_01ca, xshift=-3cm] {};
\node (Target_01ca) [TableTarget, below of=Operation_01ca] {};
\node (Operation_01cb) [AnOperation,below of=Target_01ca] {};
\node (Target_01cb) [TableTarget, below of=Operation_01cb] {};
\node(Operation_01cc) [AnOperation, below of=Target_01cb] {01cc};
\draw (Source_01ca) -- (Operation_01ca);
\draw (Origin) -| (Operation_01ca);
\draw (Operation_01ca) -- (Target_01ca);
\draw (Target_01ca) -- (Operation_01cb);
\draw (Operation_01cb) -- (Target_01cb);
\draw (Target_01cb) -- (Operation_01cc);
\node (f) [inner sep=0pt, draw=none, fill=none, fit=(Operation_01cc) (Target_01a)] {};
\node (Target_02) [TableTarget, below=of Origin |- f.south] {};
\draw (Operation_01cc) |- (Target_02);
\draw (Target_01a) |- (Target_02);
\node(Operation_03a) [AnOperation, below of=Target_02] {};
\node(Source_03a) [Table, left of=Operation_03a, xshift=-3cm] {};
\node(Operation_03b) [AnOperation, below of=Operation_03a] {};
\node(Target_03b) [TableTarget, below of=Operation_03b] {};
\node(future) [TableTarget, below of=Target_03b] {};
\draw (Operation_03b) -- (Target_03b);
\draw (Operation_03a) -- (Operation_03b);
\draw (Source_03a) -- (Operation_03a);
\draw (Target_02) -- (Operation_03a);
\draw (Target_03b) -- (future);
\node(finalTarget) [finalTarget, below of=future] {};
\draw (future) -- (finalTarget);
\draw (Origin) -- (Target_02);
\end{tikzpicture}
\end{document}
