Tikz：线段之间距离微小的问题

Question

我想创建一个类似地铁地图的图片来显示一些数据流。因为我想要有不同粗细和颜色的对角线、水平线和垂直线，所以我需要在线条之间画出曲线连接。我的想法是为宏提供简单直观的名称，例如：十二点到三点，意思是从上面来，向左弯曲 90 度，等等。我使用 pdftolatex，但有一个问题，就是最小距离让我很困扰 :-) 附上最小工作示例。我应该怎么做才能解决这个问题？

梅威瑟：

\documentclass[paper=a4paper, landscape]{article}
%----------------------------------------------------------
% Template: METRO PLAN
%----------------------------------------------------------

%Seitenraender anzeigen und aendern
%\usepackage[showframe]{geometry}
\usepackage{geometry} 
\geometry{
  left=0.5cm,
  right=0.5cm,
  top=0.5cm,
  bottom=0.5cm,
  bindingoffset=5mm
}
\usepackage{amsmath} 
\usepackage{amssymb} 
%\usepackage[ngerman]{babel} 
\usepackage[utf8]{inputenc}
\usepackage{tikz}


% We need the following libraries for TikZ here:
\usetikzlibrary {positioning} 
\usetikzlibrary{shapes,shapes.multipart,shapes.geometric} 
\usetikzlibrary{arrows}  %maybe can be dropped later :-)


\begin{document} 


%Layer-Technologie: 
\pgfdeclarelayer{bottomlayer}   
\pgfdeclarelayer{middlelayer}    
\pgfdeclarelayer{toplayer}      

\pgfsetlayers{main,bottomlayer,middlelayer,toplayer}     


% Background color
\pagecolor{white}
\color{black} 

\begin{tikzpicture} [node distance=0.1cm and 0.1cm ] 

\begin{pgfonlayer}{toplayer} 


% Invisible Node: 
%USAGE: \invnodeXXXXX{Node-ID}{REF-Node-ID}{xshift}{yshift}
\newcommand{\invnodedown}[4] { 
\node[coordinate](#1) [below=of #2,xshift=#3 cm, yshift= #4 cm]{};}


\newcommand{\twelvetothreefat}[2] { 
\draw [line width=0.35cm,color=#2] (#1.center) arc (-180:-90:1);}  %end of macro
\newcommand{\fatline}[3] { 
\tikzstyle {style_fatline}=   [line width=0.35cm,color=#3]
\draw  [style_fatline]   (#2) -- (#1)  ;}  %end of macro
\node (ROOT){x}; 

\invnodedown{INV10}{ROOT}{0}{-3};
\fatline{INV10}{ROOT}{red}
\twelvetothreefat{INV10}{red}

\end{pgfonlayer}  


\begin{pgfonlayer}{middlelayer}  
%------------maybe later used--
\end{pgfonlayer}  


\begin{pgfonlayer}{bottomlayer} 
%...reserved to draw colored areas...
\end{pgfonlayer}  
\end{tikzpicture} 
\end{document}

Answer 1

我没有看到任何差距。这是您的代码的编辑版本，而\tikzset不是弃用的\tikzstyle。在我看来，“设置”部分应该在文档序言中，但这取决于几个因素。

我添加了两个屏幕截图，一个分辨率非常高，另一个分辨率较低。预览器可能会在低分辨率下显示“间隙”，但这只是光栅化的副作用。我使用了两种不同的颜色，以最大限度地发挥可能的效果。

\documentclass[a4paper,landscape]{article}
%----------------------------------------------------------
% Template: METRO PLAN
%----------------------------------------------------------

%Seitenraender anzeigen und aendern
%\usepackage[showframe]{geometry}
\usepackage{geometry} 
\geometry{
  left=0.5cm,
  right=0.5cm,
  top=0.5cm,
  bottom=0.5cm,
  bindingoffset=5mm
}
\usepackage{amsmath} 
\usepackage{amssymb} 
%\usepackage[ngerman]{babel} 
\usepackage[utf8]{inputenc}
\usepackage{tikz}


% We need the following libraries for TikZ here:
\usetikzlibrary {positioning} 
\usetikzlibrary{shapes,shapes.multipart,shapes.geometric} 
\usetikzlibrary{arrows}  %maybe can be dropped later :-)
\begin{document} 


%Layer-Technologie: 
\pgfdeclarelayer{bottomlayer}   
\pgfdeclarelayer{middlelayer}    
\pgfdeclarelayer{toplayer}      

\pgfsetlayers{main,bottomlayer,middlelayer,toplayer}     


% Background color
\pagecolor{white}
\color{black} 

\begin{tikzpicture} [node distance=0.1cm and 0.1cm ] 

\begin{pgfonlayer}{toplayer}
%%% Setup %%%
\tikzset{
  fatline/.style={line width=0.35cm,color=#1},
}
% Invisible Node: 
%USAGE: \invnodeXXXXX{Node-ID}{REF-Node-ID}{xshift}{yshift}
\newcommand{\invnodedown}[4]{%
  \node[coordinate](#1) [below=of #2,xshift=#3 cm, yshift= #4 cm]{};
}
\newcommand{\twelvetothreefat}[2]{%
  \draw [fatline=#2] (#1.center) arc (-180:-90:1);
}
\newcommand{\fatline}[3]{%
  \draw  [fatline=#3]   (#2) -- (#1)  ;
}
%%% End setup %%%
\node (ROOT){x};

\invnodedown{INV10}{ROOT}{0}{-3};
\fatline{INV10}{ROOT}{blue!80!green}
\twelvetothreefat{INV10}{green!80!blue}

\end{pgfonlayer}


\begin{pgfonlayer}{middlelayer}  
%------------maybe later used--
\end{pgfonlayer}  


\begin{pgfonlayer}{bottomlayer} 
%...reserved to draw colored areas...
\end{pgfonlayer}  
\end{tikzpicture} 

\end{document}

高分辨率

低分辨率