Hi, I'm trying to write a custom drawing routine. I want to specify coordinates relative to the point in the axis coordinate system, but I find that when I do so, the points are displaced by (-xmin, -ymin).
In the following example, I plot a point at (1, .2) and I try to place
a node one unit to the right of that point, i.e., at (2, .2). When I
do:
\path ##1 ++(axis cs:1,0) node {o};
The o mark ends up not at (2, .2), but at (3, .3), i.e., displaced by
(-xmin, -ymin).
Am I doing something wrong or is this a bug?
I'm using Debian stable's texlive, except for pgfplots. I am using
version 1.5.1 of pgfplots, which is installed locally. I have nothing
else installed locally.
Thanks,
Neal
\documentclass{article}
\usepackage{filecontents}
\usepackage{pgfplots}
\pgfplotsset{compat=1.5.1}
\pgfplotsset{
myplot/.style={
only marks,
/pgfplots/error bars/.cd,
% Only draw draw the x + \epsilon error bar.
y dir=plus,
y explicit,
% Override the default error bar drawing routine.
/pgfplots/error bars/draw error bar/.code 2 args={%
% (1,1) in the canvas vs. the axis coordinate system.
\node at (1, 1) {C};
\node at (axis cs:1, 1) {X};
# My base.
\path ##1 node[anchor=north] {##1};
# The point I get.
\path ##1 ++(axis cs:1,0) node {o} node[anchor=south] {Bad};
% The point I want.
\path (axis cs:2,.2) node {o} node[anchor=south] {Want};
% What I get is the point I want displaced by (-xmin, -ymin)!
\path (axis cs:3,.3) node {x};
},
/pgfplots/table/.cd,
y index=1,
y error index=2,
},
}
\begin{document}
\begin{tikzpicture}
\begin{filecontents}{filecontents-4426618062d2918a0559d4bc3e6c12e1.table}
1 .2 .4
\end{filecontents}
\begin{axis}[xmin=-1, xmax=6, ymin=-0.1, ymax=1.1]
\addplot [myplot] table {filecontents-4426618062d2918a0559d4bc3e6c12e1.table};
\end{axis}
\end{tikzpicture}
\end{document}
mwe.pdf
Description: Adobe PDF document
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