# TikZ scaling graphic and adjust node position and keep font size [closed]

I have several pictures in my thesis. I want to draw arrows with text over these pictures. After that I want to scale the picture, but the node position should adjust to the scaling and arrows, and text-size should not change.

Here is my example:

\begin{figure}
\begin{tikzpicture}[
every node/.style={font=12pt},
remember picture,
scale=0.3,
transform shape
]
\node[anchor=south west,inner sep=0] (Bild) at (0,0) {\includegraphics{images/Bild.eps}};
\node (a) at (28,44) {Hello};
\node (b) at (54,63) {};
\draw [
-latex,
line width=2mm,
] (a) -- (b);
\end{tikzpicture}
\caption{This is an example} \label{Fig:Example}
\end{figure}


So when I scale with 0.3 the image Bild.eps is scaled, but also the font is scaled very small.

How can I scale the picture without changing the font and arrows while the node coordinates are adjusted to the scaled pictures (same position)?

Here is what I have so far:

    \begin{tikzpicture}
\node[anchor=south west,inner sep=0] (image) at (0,0) {\includegraphics[width=1\textwidth]{Bild.eps}};
\begin{scope}[x={(image.south east)},y={(image.north west)}]
\draw[
-latex,
line width=2mm
] (1,1) -- (3,2);
\end{scope}
\end{tikzpicture}


But I am working in TikZEdt. It is very hard to adjust the arrow by setting the nodes with the cursor. I got a very small green rectangle, which represents the size of the arrow.

How can I make this rectangle bigger so that it is easier to adjust/set the position of the nodes for the arrow?

Okay here is what I mean:

• Scale the picture
• Keep the arrow and font size (same as document size)
• Keep the position of the nodes

The picture is the output how I want it (I edited it with Photoshop).

## closed as unclear what you're asking by Zarko, Stefan Pinnow, Andrew Swann, schtandard, RaajaJun 5 at 9:30

Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.

• You could just scale the node or the \includegraphics, can’t you? It also would be better to use coordinates relatively to your image node, say \tikzset{x=(Bild.south west), y=(Bild.north west)} (which would work in your simple case). See also Drawing on an image with TikZ – Qrrbrbirlbel Nov 8 '13 at 20:19
• You can zoom things in tikzedt. – user11232 Nov 8 '13 at 23:05