# Circular drop shadow around a spy in pgfplots

The pgf manual isn't really explicit about it, so i'm here to ask it to the stack communauty. I tried to put some shadow/blur effect around the spyonnode but with no effect at all !

I tried this :

\begin{tikzpicture}[spy using overlays={
circle,
magnification=2,
size=1.5cm,
connect spies,
Ggray1
}
]
...
spy connection path={
\draw[thick] (tikzspyonnode) -- (tikzspyinnode);
}
] on (spypoint) in node at (3.25,-1.35);
\end{tikzpicture}


Do someone have an idea?

-

You can define your own spy style with the example given in Section 49.5 of PGF/TikZ manual. Here is one such modification with shadowed spy windows.

\documentclass{standalone}
\usepackage{pgfplots}
spy scope={#1,
every spy on node/.style={
circle,
fill, fill opacity=0.2, text opacity=1
},
every spy in node/.style={
fill=white, draw, ultra thick, cap=round
}
}
}
}
\begin{document}
magnification=3,
size=1.5cm,
connect spies}
]
\begin{axis}
samples=25,domain=0:2,y domain=0:1]
{exp(-x) * sin(pi*deg(y))};
\begin{scope}
\spy [red] on (2,3cm) in node at (3.5cm,-1.25cm);
\spy [blue,size=1cm] on (3cm,1cm) in node  at (0,-1.25cm);
\end{scope}
\end{axis}
\end{tikzpicture}
\end{document}


-
Thanks for a so quick answer but it doesn't seem working with my style based on the code in the question: – Rave May 20 '12 at 17:26
@Rave Can you give a small but compilable example that show the problem so that we can look at it together? I can't guess the problem as it is. – percusse May 20 '12 at 17:30
Yes sorry i tried to edit my answer put some picture in it but i wasn't quick enough: !Pic_shadow. The "spy in node" is really to dark compared to the "spy on node" – Rave May 20 '12 at 17:34
@Rave The grayness you see is the shadow itself because the node is not filled. Add fill=white or any other color to fill it. Have a look at the in node style in my answer. – percusse May 20 '12 at 17:39
Already tried but it went copmletly white and with my color it is to dark : !compare white and my color I'm gonna try a fill=mycolor!%!white to see what's gonna happen – Rave May 20 '12 at 17:49