Fiz um gráfico com matlab. Então gerei um .tikz
arquivo com matlab2tikz. Agora quero inserir setas no .tikz
arquivo e também escrever algo à esquerda da seta.
Posso fazer setas e texto no gráfico, mas matlab2tikz não conhece a caixa de texto. Então isso não funciona.
Este é o meu .tikz
arquivo:
% Copyright (c) 2008--2012, Nico Schlömer <[email protected]>
% All rights reserved.
%
% The latest updates can be retrieved from
% http://www.mathworks.com/matlabcentral/fileexchange/22022-matlab2tikz
% where you can also make suggestions and rate matlab2tikz.
%
%
%
\begin{tikzpicture}
\begin{axis}[%
view={0}{90},
width=\figurewidth,
height=\figureheight,
scale only axis,
xmin=257.75, xmax=260.4,
xlabel={[t] = s},
ymin=67.3, ymax=70.5,
ylabel={[v] = km/h},
axis lines=left,
legend style={at={(0.03,0.97)},anchor=north west,nodes=right}]
\addplot [
color=blue,
solid,
line width=1.5pt
]
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};
\addlegendentry{$\text{v}_{\text{ang}}$};
\addplot [
color=green!50!black,
solid,
line width=1.5pt
]
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};
\addlegendentry{$\text{v}_{\text{soll}}$};
\end{axis}
\end{tikzpicture}
Responder1
Como você pode ler no README
arquivo emlocal do github matlab2tikzo que matlab2tikz
produz é um arquivo a ser incluído em um tex
arquivo. No seu caso você decidiu não fixar as dimensões da figura e precisa declarar e definir \figurewidth
no \figureheight
arquivo externo. Isso é o que fiz no próximo código
\documentclass[border=2mm,tikz]{standalone}
\usepackage{amsmath}
\usepackage{pgfplots}
\pgfplotsset{plot coordinates/math parser=false}
\newlength\figureheight %declares new dimensions
\newlength\figurewidth
\begin{document}
% Setting the figure dimensions is optional (see above).
\setlength\figureheight{4cm} %fixes figure dimensions
\setlength\figurewidth{6cm}
\input{myplot.tikz} %your plot is into file 'myplot.tikz'
\end{document}
que produz
Agora, a segunda questão é como desenhar algo no seu enredo. Uma possibilidade seria adicionar novos TiKZ
comandos ao .tikz
arquivo, mas você precisará refazer suas modificações toda vez que quiser alterar seu gráfico original (do matlab).
Outra possibilidade é fornecida emDesenhando em uma imagem com TikZ. Desta forma, myplot.tikz
é incluído em um TiKZ
nó e você arrows
é desenhado sobre ele. O próximo código mostra como usar as soluções de Caramdir e Jake para o seu problema.
\documentclass[border=2mm,tikz]{standalone}
\usepackage{amsmath}
\usepackage{pgfplots}
\pgfplotsset{plot coordinates/math parser=false}
\newlength\figureheight
\newlength\figurewidth
\begin{document}
% Setting the figure dimensions is optional (see above).
\setlength\figureheight{4cm}
\setlength\figurewidth{6cm}
\begin{tikzpicture}
%
%The matlab2tikz plot is drawn as a node
%
\node[anchor=south west,inner sep=0] (myplot) at (0,0) {
\input{myplot.tikz}
};
%
% Some grid lines are drawn to help you placing your additions
%
\begin{scope}[x={(myplot.south east)}, y={(myplot.north west)}]
%
% Next three lines must be commented to obtain final result
%
\draw[xstep=.1,ystep=.1,help lines,gray!50] (0,0) grid (1,1);
\foreach \x in {0,1,...,9} { \node [anchor=north,font=\tiny] at (\x/10,0) {0.\x}; }
\foreach \y in {0,1,...,9} { \node [anchor=east,font=\tiny] at (0,\y/10) {0.\y}; }
%
% You can add what you want over the plot
%
\draw[<-,thick,red] (.43,.55)--(.7,.7)
node[right,draw=red,rounded corners,
text width=2cm,align=center,text=blue]
{something right of the arrow};
\end{scope}
\end{tikzpicture}
\end{document}
O resultado com linhas de ajuda é
enquanto o final mostra assim
Última observação: tenho usado standalone
package mas tudo pode ser feito em qualquer classe de documento.