I am trying to draw a line between points of two plots as shown in the picture (the blue line) but without luck. It is with tikzpicture and pgfplots. Similar to:
\begin{tikzpicture}
\begin{axis}
\addplot coordinates { (1,2) (2,3) };
\addplot coordinates { (1,4) (2,6) };
\end{axis}
\end{tikzpicture}
I did try adding nodes to \addplot but they seem to be located at (0,0) regardless of settings.
Any suggestions?