我想要画这样的东西：
这是我的代码：
\documentclass{article}
\usepackage[usenames,dvipsnames]{xcolor}
\usepackage{tikz}
%\usepackage[active,tightpage,floats]{preview}
%\setlength\PreviewBorder{30pt}%
\usetikzlibrary{calc, fit, shapes.geometric}
\pgfdeclarelayer{background}
\pgfdeclarelayer{foreground}
\pgfsetlayers{background,main,foreground}
%\colorlet{MAROON}{Maroon}
\begin{document}
\begin{figure}[ht]
\centering
\begin{tikzpicture}
\coordinate (Origin) at (0,0);
\coordinate (XAxisMax) at (5.5,0);
\coordinate (YAxisMax) at (0,4.5);
\coordinate (Ylow) at (-0.5,0);
\coordinate (Xlow) at (0,-0.5);
\coordinate (XMax) at (5.5,-0.5);
\coordinate (YMax) at (-0.5,4.5);
\draw [thick, darkgray] (Origin) -- (XAxisMax);% Draw x axis
\draw [thick, darkgray] (Origin) -- (YAxisMax);% Draw y axis
\draw [thick, darkgray!40, -latex] (Xlow) -- (XMax);% Draw x axis
\draw [thick, darkgray!40, -latex] (Ylow) -- (YMax);% Draw y axis
\foreach \x in {1,2,...,10}{% Two indices running over each
\foreach \y in {1,2,...,8}{% node on the grid we have drawn
\node[thick,draw,circle,inner sep=2pt,fill=gray!60, name=circle-\x-\y] at (0.5*\x,0.5*\y) {};
% Places a dot at those points
}
}
\begin{pgfonlayer}{background}
\node (B) [draw, color=BrickRed, fill=red!30, rectangle, rounded corners, fit={(circle-1-1) (circle-10-1)}] {};
\end{pgfonlayer}
\begin{pgfonlayer}{background}
\node (A) [draw, color=BrickRed, fill=red!30, rectangle, rounded corners, fit={(circle-1-5) (circle-10-8)}] {};
\end{pgfonlayer}
\node[align=center, below] at (2.75,0) {$i$};
\node[align=center, left] at (0,2.25) {$j$};
\node[align=center, left] at (-0.5,2.25) {Data\\domain};
\node [above] at (A.north) {$k = N -1$};
\coordinate (bb1) at (circle-10-1);
\node [above right of = 5pt] at (bb1) {$BB1$};
\end{tikzpicture}
\caption{Bounding boxes for convex union of data regions}
\label{figure:single}
\end{figure}
\end{document}
我没有正确放置右侧内容。（例如，我尝试放置BB1，但它没有出现在正确的位置）。如何使用不同大小和样式的代码（如这里使用的）path[k][j]？
这是我的输出：
答案1
这是一个可能的解决方案：
- 所有节点都位于从现有圆开始的位置（但我几乎确信这个答案不会找到它们在正确的[神秘的]位置
;-)） - 圆圈右侧节点的字体通过样式以电传打字机方式设置
\tikzset{我的 tt/.style={
字体=\ttfamily#1}，
}
我们可以说可定制，使用参数（在代码中将用于设置字体的大小）。
代码：
\documentclass{article}
\usepackage[usenames,dvipsnames]{xcolor}
\usepackage{tikz}
%\usepackage[active,tightpage,floats]{preview}
%\setlength\PreviewBorder{30pt}%
\usetikzlibrary{calc, fit, shapes.geometric}
\pgfdeclarelayer{background}
\pgfdeclarelayer{foreground}
\pgfsetlayers{background,main,foreground}
\tikzset{my tt/.style={
font=\ttfamily#1},
}
%\colorlet{MAROON}{Maroon}
\begin{document}
\begin{figure}[ht]
\centering
\begin{tikzpicture}
\coordinate (Origin) at (0,0);
\coordinate (XAxisMax) at (5.5,0);
\coordinate (YAxisMax) at (0,4.5);
\coordinate (Ylow) at (-0.5,0);
\coordinate (Xlow) at (0,-0.5);
\coordinate (XMax) at (5.5,-0.5);
\coordinate (YMax) at (-0.5,4.5);
\draw [thick, darkgray] (Origin) -- (XAxisMax);% Draw x axis
\draw [thick, darkgray] (Origin) -- (YAxisMax);% Draw y axis
\draw [thick, darkgray!40, -latex] (Xlow) -- (XMax);% Draw x axis
\draw [thick, darkgray!40, -latex] (Ylow) -- (YMax);% Draw y axis
\foreach \x in {1,2,...,10}{% Two indices running over each
\foreach \y in {1,2,...,8}{% node on the grid we have drawn
\node[thick,draw,circle,inner sep=2pt,fill=gray!60, name=\x-\y] at (0.5*\x,0.5*\y) {};
% Places a dot at those points
}
}
\begin{pgfonlayer}{background}
\node (B) [draw, color=BrickRed, fill=red!30, rectangle, rounded corners, fit={(1-1) (10-1)}] {};
\end{pgfonlayer}
\begin{pgfonlayer}{background}
\node (A) [draw, color=BrickRed, fill=red!30, rectangle, rounded corners, fit={(1-5) (10-8)}] {};
\end{pgfonlayer}
\node[align=center, below] at (2.75,0) {$i$};
\node[align=center, left] at (0,2.25) {$j$};
\node[align=center, left] at (-0.5,2.25) {Data\\domain};
\node[above] at (A.north) {$k = N -1$};
\node[right=5pt,my tt=\large] at (10-2) {BB1};
\node[right=5pt,my tt=\scriptsize] at (10-1) {path[k][j]};
\node[right=5pt,my tt=\scriptsize, text width=1cm] at (10-7) {path[i][j] and path[i][k]};
\node[right=5pt,my tt=\large, anchor=south west] at (10-8) {BB0};
\end{tikzpicture}
\caption{Bounding boxes for convex union of data regions}
\label{figure:single}
\end{figure}
\end{document}
结果：
请注意，为了更精确地定位节点，您可以使用它们的相对位置（与库positioning）以及节点的锚点。
这是一个简单的例子：
\documentclass[tikz,border=2pt,png]{standalone}
\usetikzlibrary{positioning,shapes.misc}
\pgfdeclarelayer{back}
\pgfsetlayers{back,main}
\begin{document}
\begin{tikzpicture}
\node[draw] at (0,0) (x) {Start};
\begin{pgfonlayer}{back}
\node[draw,cross out, blue] at (x){};
\end{pgfonlayer}
% Simple usage of <position> of=<name>
\node[right of =x] {x};
\node[right of =x, anchor=north,red] {n};
\node[right of =x, anchor=north west,red!20] {nw};
\node[right of =x, anchor=north east,red!70] {ne};
\node[right of =x, anchor=south,blue] {s};
\node[right of =x, anchor=south west,blue!20] {sw};
\node[right of =x, anchor=south east,blue!70] {se};
% Usage of <position> = <distance> of <name>
\node[left=1.5cm of x, anchor=center] {x};
\node[left=1.5cm of x, anchor=north,red] {n};
\node[left=1.5cm of x, anchor=north west,red!20] {nw};
\node[left=1.5cm of x, anchor=north east,red!70] {ne};
\node[left=1.5cm of x, anchor=south,blue] {s};
\node[left=1.5cm of x, anchor=south west,blue!20] {sw};
\node[left=1.5cm of x, anchor=south east,blue!70] {se};
\end{tikzpicture}
\end{document}
结果：
请参阅 pgfmanual 以获取完整的锚点列表。