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TikZ 中的简单网格绘制

tag-icon • tag-icon tikz-pgf draw technical-drawing tikz-graphdrawing grids
TikZ 中的简单网格绘制

我需要在 TikZ 中画一些东西，但我还是缺乏经验。有人可以帮忙在 TikZ 中画这个吗？非常感谢。

在此处输入图片描述

答案1

请求的图表

\documentclass{standalone}
\usepackage{tikz}
\begin{document}
    \begin{tikzpicture}
        \tikzset{sphere/.style={
            draw,
            thick,
            #1!75!black,
            ball color=#1,
            circle,
        }}
        \tikzset{arrow/.style={
            very thick,
            ->,
            >=latex
        }}
        \draw[fill=red, draw=none] (2, 1) rectangle (3, 2);
        \draw[fill=red, draw=none] (1, 2) rectangle (2, 3);
        \draw[thick] (0, 0) grid (4, 4);
        \node[sphere=blue, minimum size=0.5cm] (projection) at (1.5, 2.5) {};
        \node[sphere=blue, minimum size=1cm] (ball) at (0.8, 5) {};
        \draw[arrow, blue] (ball.south) -- (projection.north west) node[pos=0.15, right, color=black] {\footnotesize Projection};
        \node at (1.15, 2.15) {\scriptsize\(p_j\)};
        \node[below left] at (ball.south west) {\(n_j\)};
        
        \begin{scope}[xshift=6cm]
            \draw[fill=red, draw=none] (2, 1) rectangle (3, 2);
            \draw[fill=red, draw=none] (1, 2) rectangle (2, 3);
            \draw[thick] (0, 0) grid (4, 4);
            \node[sphere=blue, minimum size=0.5cm] (projection) at (1.5, 2.5) {};
            \node[sphere=blue, minimum size=1cm] (ball) at (0.8, 5) {};
            \draw[arrow, blue] (ball.south) -- (projection.north west) node[pos=0.15, right, color=black] {\footnotesize Projection};
            \node at (1.15, 2.15) {\scriptsize\(p_j\)};
            \node[below left] at (ball.south west) {\(n_j\)};
            \node[sphere=green, minimum size=0.5cm] (projection2) at (2.5, 1.5) {};
            \node[sphere=green, minimum size=1cm] (ball2) at (3.2, 5) {};
            \node at (2.825, 1.15) {\scriptsize\(p_{j'}\)};
            \node[below left] at (ball2.south west) {\(n_j\)};
            \draw[arrow, green] (ball2.south) -- (projection2.north);
            \draw[arrow] (projection2.north west) -- (projection.south east);
        \end{scope}
    \end{tikzpicture}
\end{document}

这里使用的关键命令是

\draw (a, b) grid (c, d);

(a, b)从到绘制一个网格(c, d)。

\fill[<colour>] (a, b) rectangle (c, d);

绘制一个具有对角线的矩形，(a, b)并且(c, d)矩形没有边界并填充颜色<colour>。

\node[circle, ball color=<colour>, minimum size=xcm] at (a, b) {};

画一个彩色圆圈<colour>，其直径x以厘米为单位(a, b)。

我还利用了节点和坐标，特别是如果你这样做

\node (name) at (a, b) {};
\draw (name.south) -- (c, d);

然后这会在 处放置一个节点(a, b)并调用该节点。然后第二条命令从节点的底部（其他罗盘方向的工作方式类似）name绘制一条直线到该点。.south(c, d)

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