[Tex/LaTex] How to create a grid with tikzpicture

diagramstikz-pgf

I would like to create a grid like this with tickpicture, but I don't know how to draw the points where lines match.

Best Answer

There might be wiser approaches, but to me it looks like something that can be solved with foreaches and manual placement of nodes.

\documentclass{standalone}

\usepackage{tikz}

\begin{document}
\begin{tikzpicture}
\tikzset{dot/.style={fill=black,circle}}

\foreach\l[count=\y] in {E,...,A}
{
\draw (0,\y) -- (7.5,\y);
\node at (-0.5,\y){\l};
}

\foreach \x in {1,2,...,7}
{
\draw (\x,0) -- (\x,5.5);
\node at (\x,-0.5){\x};
}

\node[dot] at (1,5){};
\node[dot] at (2,3){};
\node[dot] at (2,4){};
\node[dot] at (3,1){};
\node[dot] at (4,4){};
\node[dot] at (5,2){};
\node[dot] at (6,3){};
\node[dot] at (7,2){};

\end{tikzpicture}
\end{document}

Output

enter image description here

Code

\documentclass[margin=10pt]{standalone}  
\usepackage{tikz}
\begin{document}
\begin{tikzpicture}
 \draw[step=1cm, color=gray] (0, 0) grid (5, 4);

\foreach \coord/\label [count=\xi] in {
    {0,0}/{$A(0, 0)$},
    {5,4}/{$B(x, y)$},
    {5,0}/{$(x, 0)$},
    {0,4}/{$(0, y)$}
}{
    \pgfmathsetmacro\anch{mod(\xi,2) ? "north" : "south"}
    \node[anchor=\anch] at (\coord) {\label};
}

\draw[line width=3pt, rounded corners] (0,0) -- (0,1) -- (3,1) -- (3,2) -- (5,2) -- (5,4);

\end{tikzpicture}
\end{document}

[Tex/LaTex] How to draw a grid on a shape made of curved lines

It's a bit fiddly getting the non-linear transformation stuff working in pgf but it can more-or-less do what is required along with the spy library:

\documentclass[tikz,margin=5]{standalone}
\usepgfmodule{nonlineartransformations}
\usepgflibrary{curvilinear}
\usetikzlibrary{spy,calc}
\tikzset{pics/grid/.style={code={%
  \tikzset{x=10pt, y=10pt, step=10pt}
  \draw [thin] (-2, 0) grid ++(4, 20);
  \draw [thick] (-2, 0) rectangle ++(4, 20) (-4, 0) -- (4, 0);
  \draw [thick, fill=gray!50] (0,14) rectangle ++(1,1)
   ++(-.5,-.5) coordinate (-square);
  \draw [<->, thin, gray] (0,14) -- ++(1,1); 
  \coordinate (-corner) at (-2, 20);
}}}
\begin{document}
\begin{tikzpicture}[>=stealth,
  spy using outlines={circle, magnification=3, size=2.5cm, connect spies}]
\pic (a) {grid};
\draw [->, thick, shorten >=5] (a-corner) ++(-1,0)  -- (a-corner);
\spy [red] on (a-square) in node at ($(a-square)+(2.5,0)$);
\scoped{
  \pgfsetcurvilinearbeziercurve
    {\pgfpointxy{5}{0}}{\pgfpointxy{5}{10}}
    {\pgfpointxy{25}{15}}{\pgfpointxy{25}{20}}
  \pgftransformnonlinear{\pgfgetlastxy\x\y%
    \pgfpointcurvilinearbezierorthogonal{\y}{-\x}}%
  \pic (b) {grid};
}
\draw [->, thick, shorten >=5] (b-corner) ++(-1,0) -- (b-corner);
\spy [red] on (b-square) in node at ($(b-square)+(2.5,0)$);
\end{tikzpicture}
\end{document}

Best Answer

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Output

Code

[Tex/LaTex] How to draw a grid on a shape made of curved lines

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