[Tex/LaTex] How to draw just the arrow tip in TikZ

arrowstikz-pgf

How can one draw "just the arrow tip" from one of the arrows in the arrow tip library in TikZ?

The problem is that if you try a brute-force solution, eg.

\tikz \draw[-triangle 90] (0,0) -- +(.1,0);

you run into trouble because this produces a small line, the (0,0) to (.1, 0) part, which cannot be removed (a remnant remains no matter if you change .1 to .00001). This is a problem when one wants to rotate the arrow for use in "dropping arrow tips" along a path, as in Andrew Stacey's solution from this question.

Best Answer

\documentclass{minimal}
\usepackage{tikz} 
\usetikzlibrary{arrows}

\begin{document}
\fbox{ \begin{tikzpicture}
\node[inner sep=0pt] {\tikz\draw[-triangle 90](0,0) ;};  
 \end{tikzpicture}} 
\fbox{ \begin{tikzpicture}
\node[rotate=90,inner sep=0pt] {\tikz\draw[-triangle 90](0,0) ;};  
 \end{tikzpicture}  }
\fbox{ \begin{tikzpicture}
\node[rotate=180,inner sep=0pt] {\tikz\draw[-triangle 90](0,0) ;};  
 \end{tikzpicture}  }
\fbox{  \begin{tikzpicture}
\node[rotate=270,inner sep=0pt] {\tikz\draw[-triangle 90](0,0) ;};  
 \end{tikzpicture}  }     

\end{document}

enter image description here

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