Hi,
I'm using x coord inv trafo/.code to transform seconds into more
(human) meaningful labels. For instance, my macro turns 7000 seconds
into '2h'. This works correctly for normal axes, however, if I use a
logarithmic axes, my macro is passed the exponent rather than the
value. How do I programmatically determine what I am being passed?
A minimal example follows.
Thanks for your help,
Neal
\documentclass{article}
\usepackage{tikz}
\usepackage{pgfplots}
% number
% threshold
% divisor
% suffix
% else
\def\secondspphelper#1#2#3#4#5{%
\pgfmathfloatparsenumber{#1}%
\edef\num{\pgfmathresult}%
\pgfmathfloatparsenumber{#2}%
\edef\threshold{\pgfmathresult}%
\pgfmathfloatparsenumber{#3}%
\edef\divisor{\pgfmathresult}%
%
\pgfmathfloatlessthan{\num}{\threshold}%
\ifdim\pgfmathresult pt = 1 pt%
\pgfmathfloatdivide{\num}{\divisor}%
\pgfmathfloattofixed{\pgfmathresult}%
\pgfmathprintnumberto[/pgf/number
format/precision=0]{\pgfmathresult}{\pgfmathresult}%
\edef\pgfmathresult{\pgfmathresult#4}%
\else%
#5%
\fi%
}%
% Pretty print a number of seconds.
% Example:
% \secondspp{1000}\pgfmathresult == 17m
\def\secondspp#1{%
% Print as seconds for values up to 90 seconds.
\secondspphelper{#1}{90}{1}{s}{%
% Print as minutes for values up to 1 hour (= 3600 seconds)
\secondspphelper{#1}{3600}{60}{m}{%
% Print as hours for values up to 1 day (= 86400 seconds)
\secondspphelper{#1}{86400}{3600}{h}{%
% Print as days for up to 2 weeks (= 1209600 seconds)
\secondspphelper{#1}{1209600}{86400}{d}{%
% Print as weeks.
\secondspphelper{#1}{Inf}{604800}{w}{}%
}%
}%
}%
}%
}
\begin{document}
\def\xmin{1}
\def\xmax{10000}
\begin{tikzpicture}
\begin{axis}[
xticklabel={\tick},
scaled x ticks=false,
plot coordinates/math parser=false,
x coord inv trafo/.code={\def\x{#1}\show\x\secondspp{#1}}
]
\addplot[domain=\xmin:\xmax] plot expression {x};
\end{axis}
\end{tikzpicture}
\begin{tikzpicture}
\begin{loglogaxis}[
xticklabel={\tick},
scaled x ticks=false,
plot coordinates/math parser=false,
x coord inv trafo/.code={\def\x{#1}\show\x\secondspp{#1}}
]
\addplot[domain=\xmin:\xmax] plot expression {x};
\end{loglogaxis}
\end{tikzpicture}
\end{document}
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