我怎样才能在问题答案中绘制类似下面的网格？
但是我可以为不同的单元格选择不同的填充颜色吗？
我需要能够为网格中的单独节点着色（填充）。我尝试使用这个，但出于某些原因，填充上有一些奇怪的填充
\documentclass{article}
\usepackage{algorithmic}
\usepackage{amsfonts}
\usepackage{amsmath}
\usepackage{tikz}
\title{Title}
\author{User}
\begin{document}
\begin{tikzpicture}
\draw[step=0.5cm,color=black] (-1,-1) grid (1,1);
\node[fill=green] at (-0.75,+0.75) {};
\node at (-0.25,+0.75) {};
\node at (+0.25,+0.75) {};
\node at (+0.75,+0.75) {};
\node at (-0.75,+0.25) {};
\end{tikzpicture}
\end{document}
答案1
\documentclass[tikz,border=2mm]{standalone}
\begin{document}
\begin{tikzpicture}[every node/.style={minimum size=.5cm-\pgflinewidth, outer sep=0pt}]
\draw[step=0.5cm,color=black] (-1,-1) grid (1,1);
\node[fill=green] at (-0.75,+0.75) {};
\node[fill=red] at (-0.25,+0.75) {};
\node[fill=orange] at (+0.25,+0.75) {};
\node[fill=yellow] at (+0.75,+0.75) {};
\node[fill=purple!70] at (-0.75,+0.25) {};
\end{tikzpicture}
\end{document}
更新：
命令\draw[step=0.5cm,color=black] (-1,-1) grid (1,1);绘制网格。在定义网格尺寸step之前和之后修复元素大小和坐标grid。如果您想要一个三行八列的网格，每个网格的方格大小为 0.5 厘米，左下角位于(0,0)，请使用
\draw[step=0.5cm,color=black] (0,0) grid (4,1.5);
如同
\documentclass[tikz,border=2mm]{standalone}
\begin{document}
\begin{tikzpicture}[every node/.style={minimum size=.5cm-\pgflinewidth, outer sep=0pt}]
\draw[step=0.5cm,color=black] (0,0) grid (6,1.5);
\node[fill=green] at (0.25,+1.25) {};
\node[fill=red] at (0.25,+0.25) {};
\node[fill=orange] at (+3.25,+0.75) {};
\node[fill=orange] at (+2.75,+0.75) {};
\node[fill=yellow] at (+5.75,+1.25) {};
\node[fill=purple!70] at (5.75,+0.25) {};
\end{tikzpicture}
\end{document}
答案2
您可以使用矩阵：
\documentclass[tikz,border=7mm]{standalone}
\usetikzlibrary{matrix}
\begin{document}
\begin{tikzpicture}[fill=orange]
\matrix[matrix of nodes, nodes={draw,minimum size=1cm}, nodes in empty cells,column sep=-\pgflinewidth,row sep=-\pgflinewidth](M){
& & |[fill]| & |[fill]| & |[fill]| & |[fill]| & & \\
& |[fill]| & & & & & |[fill]| & \\
|[fill]| & & |[fill]| & & |[fill]| & & & |[fill]| \\
|[fill]| & & |[fill]| & & |[fill]| & & & |[fill]| \\
|[fill]| & & & & & |[fill=red]| & & |[fill]| \\
|[fill]| & & |[fill=red]| & |[fill=red]| & |[fill=red]| & & & |[fill]| \\
& |[fill]| & & & & & |[fill]| & \\
& & |[fill]| & |[fill]| & |[fill]| & |[fill]| & & \\
};
\end{tikzpicture}
\end{document}
答案3
这个怎么样：
\documentclass[tikz,border=5pt]{standalone}
\usepackage{tikz}
\tikzset{
pics/square/.default={1},
pics/square/.style = {
code = {
\draw[pic actions] (0,0) rectangle (#1,#1);
}
}
}
\begin{document}
\begin{tikzpicture}
\foreach \x in {1,2,...,10} {
\foreach \y in {1,2,...,5} {
\pic[fill=blue!50] at (\x,\y) {square};
}
}
\pic[fill=yellow] at (5,3) {square};
\pic[draw=none,fill=yellow] at (1.25,2.25) {square=.5};
\end{tikzpicture}
\end{document}
答案4
您可以\foreach结合使用/.try键处理程序将样式应用于某些单元格：
\documentclass[tikz,border=7mm]{standalone}
\begin{document}
\begin{tikzpicture}[fill=orange,
cell27/.style={fill}, cell37/.style={fill}, cell47/.style={fill}, cell57/.style={fill},
cell16/.style={fill}, cell66/.style={fill},
cell05/.style={fill}, cell25/.style={fill}, cell45/.style={fill}, cell75/.style={fill},
cell04/.style={fill}, cell24/.style={fill}, cell44/.style={fill}, cell74/.style={fill},
cell03/.style={fill}, cell53/.style={fill=red}, cell73/.style={fill},
cell02/.style={fill}, cell22/.style={fill=red}, cell32/.style={fill=red}, cell42/.style={fill=red}, cell72/.style={fill},
cell11/.style={fill}, cell61/.style={fill},
cell20/.style={fill}, cell30/.style={fill}, cell40/.style={fill}, cell50/.style={fill},
]
\foreach \i in {0,...,7}
\foreach \j in {0,...,7}
\path[cell\i\j/.try] (\i,\j) rectangle +(1,1);
\draw grid (8,8);
\end{tikzpicture}
\end{document}
