# Axis Location TikZ Tkz-Euclide

I want to reproduce this graphic using tkz-base and tkz-euclide :

But I strugle to print the Y axis on the left, as all the x's are negative.

Here's a MWE :

\begin{tikzpicture}
\tkzInit[xmin=-150000,
xmax=0,
xstep=10000,
ymax=18,
ymin=4,
ystep=2]
\tkzDrawX\tkzLabelX[orig,step=50000]
\tkzDrawY\tkzLabelY[orig]
\end{tikzpicture}


All I have is :

As you can see, the y axis is on the right while I want it on the left.

• Might I suggest using PGFplots? As far as I know tkz-euclide is more designated to geometric drawings. And your plot seems to be quite easy with PGFplots... – Guilherme Zanotelli Jan 18 '17 at 16:58
• @GuilhermeZanotelli The tkz collection also has tkz-fct for plotting stuff. The \tkzAxe stuff is defined in tkz-base. – Torbjørn T. Mar 5 '17 at 10:42

## 2 Answers

I don't know how to modify the tkz stuff to do that, but as mentioned in a comment pgfplots is a good package for plotting stuff. Here is a starting point:

\documentclass[border=5mm]{standalone}
\usepackage{pgfplots}
\begin{document}
\begin{tikzpicture}
\begin{axis}[
% set axis limits
xmin=-150000,
xmax=9000,
ymin=0,
ymax=18,
% draw axis lines only on left and bottom (default is to make a box)
axis y line=left,
axis x line=bottom,
% disable having a common scale factor for all ticklabels
scaled x ticks=false,
% separation between ticks on x-axis
xtick distance={50000},
% number of minor ticks
minor x tick num=4,
% disable having e.g. -1e5 as a tick
xticklabel style={/pgf/number format/fixed}
]

% plot some random numbers, just for example
\addplot +[domain=-150000:0] {rnd*10 + 4};
\end{axis}
\end{tikzpicture}
\end{document}


If you really want to stick with tkz-base then the only way [that I can find] to do this is to reset your axes to be positive, and then put the labels in by hand.

\documentclass[border=5mm]{standalone}
\usepackage{tkz-base}
\usepackage{tkz-euclide}
\begin{document}
\begin{tikzpicture}
\tkzInit[xmin=0, xmax=150000, xstep=10000, ymin=4, ymax=18, ystep=2]
\tkzDrawX[label={}]
\tkzDefPoint(150000,3.8){C}\tkzLabelPoint[below](C){Actuel}
\tkzDefPoint(100000,3.8){B}\tkzLabelPoint[below](B){$-50\,000$}
\tkzDefPoint( 50000,3.8){A}\tkzLabelPoint[below](A){$-100\,000$}
\tkzDrawY\tkzLabelY[orig=false]
\end{tikzpicture}
\end{document}


Of course, if you do this you would need to adjust your data points so that the years are positive too. I guess you can think of them as "years since 150,000 years ago". But as noted in the comments, you might find it easier to use pgfplots.