pgfplotstikz-pgf
I wish to force PGFPlots to use the same scientific notation exponent for all y tick labels, with the exponent placed above the graph, turning this style
into this style
I'm currently using scaled y ticks = true with no effect. I'm aware I could use scaled y ticks=base 10:2 to manually specify to use 1E2, but I'm looking for a more general solution.
The position of the tick marks is set using the key tick pos=<left|right|both> for the x and y axis simultaneously, and xtick pos and ytick pos to set the tick marks separately. In your case, you want to set ytick pos=left.
\documentclass{article}
\usepackage{pgfplots}
\begin{document}
\begin{tikzpicture}
\begin{axis}[ytick pos=left]
\addplot {rnd};
\end{axis}
\end{tikzpicture}
\end{document}
The extra y tick options refer to something different: You can manually add additional tick positions, "extra ticks", to highlight certain positions. You specify where to add new tick positions using extra y ticks={<list>}, and set the styles for these extra ticks using extra y tick style=<options>. Here's an example, highlighting the y position 0.5, which ordinarily doesn't get a tick mark:
\documentclass{article}
\usepackage{pgfplots}
\begin{document}
\begin{tikzpicture}
\begin{axis}[
ytick pos=left,
extra y ticks={0.5},
extra y tick style={red, yticklabel pos=right,ytick pos=right}]
\addplot {rnd};
\end{axis}
\end{tikzpicture}
\end{document}
It appears as if you want to rescale the x coordinates without extracting some common factor. The scaled x ticks feature has the main use case of generating a common tick factor which is placed into some node... and, in fact, pgfplots has no builtin support for scaled ticks and log axes as it is typically no use-case.
However, rescaling the x coordinates is a use-case, and it is quite simple to implement by means of x filter:
\documentclass{standalone}
\usepackage{pgfplots}
\begin{document}
\begin{tikzpicture}
\begin{axis}[
xmode=log,
log ticks with fixed point,
% for log axes, x filter operates on LOGS.
% and log(x * 1000) = log(x) + log(1000):
x filter/.code=\pgfmathparse{#1 + 6.90775527898214},
]
\addplot table {
0.0001 10
0.001 20
0.01 15
};
\end{axis}
\end{tikzpicture}
\end{document}
Best Answer
I assume that you are looking for
y tick label style={/pgf/number format/sci}. See also Chapter 4.13.1 (Frequently Used Number Printing Settings) in the currentpgfplotsmanual ( I find it a bit difficult for beginners since this istikzstuff as I understand it and notpgfplots-specific), see also* manual ofpgfplotstableChapter 2.7 (Number Formatting Options).*"The options related to number printing as such are described in all detail in the manual for PgfplotsTable, which comes with pgfplots."