tikz-pgf
I want to draw a circle of 4mm with minus sign inside it. I have set the m style:
\tikzstyle{m}=[circle, thin, draw=red, fill=red, minimum size=4mm]
however the minus sign extends the circle. I want the sign to almost fill the circle. I tried to change the line to be:
\tikzstyle{m}=[circle, thin, draw=red, fill=red, size=4mm]
but it didn't work.
How can I set the circle size to be fixed?
Following the suggestion in Jake's comments, I replaced radius=0.05cm by something like text width = 0.05cm. Below is your modified code.
\documentclass{minimal}
\usepackage{tikz}
\usetikzlibrary{shapes,arrows,positioning}
\usepackage{wrapfig}
\usepackage{graphicx}
\begin{document}
\resizebox{.4\textwidth}{!}{\begin{tikzpicture}[
block/.style = {circle, draw,
align=center,text width = 0.1cm, inner sep = 0.1cm},
line/.style = {draw,thick, -latex'},
node distance=0.9cm and 0.4cm
]
% Place nodes
\node [block] (a) {a};
\node [block, below left of=a,xshift=-1.0cm, yshift=-0.3cm] (b) {b};
\node [block, below right of=a,xshift=1.0cm, yshift=-0.3cm] (c) {c};
% Draw edges
\path [line] (a) -- (b);
\path [line] (a) -- (c);
\end{tikzpicture}}
\end{document}
You should get the following output.
Aha, got it:
pin={[pin edge={edgestyles}, nodestyles]60:Hey!}]
\documentclass{standalone}
\usepackage{tikz}
\usetikzlibrary{shapes,arrows,positioning}
\begin{document}
\begin{tikzpicture}[node distance=2cm,>=latex, every node/.style={
font=\sffamily\scriptsize
},
circtext/.style={draw,circle,minimum size=8pt,inner sep=2pt},
dot/.style={draw,circle,fill=black,minimum size=0.6mm,inner sep=0pt}
]
{
\node[rectangle, fill=green!10!white!90!black, minimum width=6cm, minimum height=3cm] at (2,0){};
\node[circtext, fill=yellow](A) at (0,0) {A};
\node[circtext, fill=yellow, right=of A](B){B};
\draw[->] (A) -- node[dot, pos=0.5, pin={[pin edge={black, dashed, -}, red]60:Hey!}](C){}(B);
}
\end{tikzpicture}
\end{document}
Best Answer
TikZ automatically adds separation between the text and the node border. When setting a minimum size for a node, it's usually a good idea to set
inner sep=0pt: