Re: [Pgfplots-features] Scatter (y)bar plots?
Hi Denis,
there is a different solution which might work. I prepared it as
low-level backend in order to implement a nice, understandable
interface in pgfplots... however, it never made it that far and it is
far from nice, understandable.
It is a set of two hooks which is installed at the beginning and end of
every bar. Combined with a bit of fine tuning, you get what you wanted...
Here is the code:
\documentclass{report}
\usepackage{pgfplots}
\pgfplotsset{compat=1.6}
\pgfplotsset{
shaded bars/.style={
point meta=y,
at begin bar={%
\pgfplotsaxisvisphasetransformpointmeta
\pgfplotscolormapdefinemappedcolor{\pgfplotspointmetatransformed}%
\begin{scope}[left color=black,right color=mapped color]%
\shade\pgfextra
},
at end bar={%
\endpgfextra;
\end{scope}%
},
},
}
\begin{document}
\thispagestyle{empty}
\begin{tikzpicture}
\begin{axis}[ybar]
\addplot+[
shaded bars,
colormap={test}{
color=(blue!10); color=(blue!20); color=(blue!30);
color=(blue!40); color=(blue!50); color=(blue!60);
color=(blue!70) },
]
plot coordinates {
(1,1565)
(2,1164)
(3,740)
(4,2273)
(5,1688)
(6,2942)
};
\end{axis}
\end{tikzpicture}
\end{document}
Attached is the result.
You see that I did something slightly more complicated: I shaded the
bars depending on the 'mapped color'. The 'shaded bars' style relies on
the two (currently undocumented) keys 'at begin bar' and 'at end bar'.
The two macros inside of it are mandatory; they take the raw point
meta; map them into the min/max range and define the 'mapped color'. The
rest is basically your example.
I always wanted to improve the bar plot handler systematically - once I
find time to do it; this kind of functionality will also receive attention.
Kind regards
Christian
Am 06.06.2013 10:23, schrieb Denis Bitouzé:
Hello,
is there a way to get scatter (y)bar plots, I mean the bars filled
with a colour depending on the y values?
The following MCE doesn't give the expected result:
%%%
\documentclass{article}
\usepackage{pgfplots}
\pgfplotsset{compat=1.8}
\begin{document}
\begin{tikzpicture}
\begin{axis}[ybar]
\addplot+[
colormap={test}{
color=(blue!10); color=(blue!20); color=(blue!30);
color=(blue!40); color=(blue!50); color=(blue!60); color=(blue!70) },
scatter/use mapped color={draw=blue,fill=mapped color}
]
plot coordinates {
(1,1565)
(2,1164)
(3,740)
(4,2273)
(5,1688)
(6,2942)
};
\end{axis}
\end{tikzpicture}
\end{document}
%%%
Thanks.
attachment: P.png\documentclass{report}
\usepackage{pgfplots}
\pgfplotsset{compat=1.6}
\pgfplotsset{
shaded bars/.style={
point meta=y,
at begin bar={%
\pgfplotsaxisvisphasetransformpointmeta
\pgfplotscolormapdefinemappedcolor{\pgfplotspointmetatransformed}%
\begin{scope}[left color=black,right color=mapped color]%
\shade\pgfextra
},
at end bar={%
\endpgfextra;
\end{scope}%
},
},
}
\begin{document}
\thispagestyle{empty}
\begin{tikzpicture}
\begin{axis}[ybar]
\addplot+[
shaded bars,
colormap={test}{
color=(blue!10); color=(blue!20); color=(blue!30);
color=(blue!40); color=(blue!50); color=(blue!60); color=(blue!70) },
]
plot coordinates {
(1,1565)
(2,1164)
(3,740)
(4,2273)
(5,1688)
(6,2942)
};
\end{axis}
\end{tikzpicture}
\end{document}
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Re: [Pgfplots-features] pgfplots and pgfplotstable numbers in XeLaTeX
Hi Mike,
thanks for your interest in pgfplots! I am glad it proves to be useful.
Concerning your request to typeset ticks without math mode: you almost
had it except that \pgfmathprintnumber beats you a bit. You are right;
it really starts math mode implicitly.
There are two potential cures: the first is to write
\pgfmathprintnumber[assume math mode,verbatim]{\tick}%
and the second is to use \pgfmathprintnumberto instead of
\pgfmathprintnumber, i.e. something like
yticklabel={
\pgfmathprintnumberto[verbatim]{\tick}\TEMP
%
\TEMP =
%
\romannumeral \TEMP%
},
In the first solution, the 'assume math mode' key tells pgfmath that it
should not ensure math mode on its own; it silently assumes that you
know what you are doing.
The second solution does not typeout the numbers: it stores the result
into the argument which comes after the number (in our case, it is
\TEMP). We can use this value in many ways; the simplest is to typeset
it (by writing \TEMP). A more complicated way is to prefix it by
\romannumeral (which is a bit strange, I admit it ;-) ).
This should allow your use-case.
Kind regards
Christian
PS
I took the freedom to post a copy of this reply on the pgfplots mailing
list in order to help others with similar problems. I hope you do not mind.
Am 10.06.2013 17:37, schrieb Michael Grant:
Dear Sir,
I have been a long time user of your excellent packages pgfplots and
pgfplotstable. I am deeply grateful for the seamless integration of
numerical data to visual graphs your packages provide.
I have recently had to use XeLaTeX to produce a document in a style
conformant to a corporate standard. And notice that the ticks of a
pgfplot are formatted in math mode.
I have solved the problem by
using: yticklabel={\pgfmathprintnumber[verbatim]{\tick}} and was
wondering if, on detection of an XeTex compiler the
\axisdefaultticklabel macro could be changed to
\def\axisdefaultticklabel{\pgfmathprintnumber[verbatim]{\tick}}.
Apropos, I see that even removing the math mode $'s still has
\pgfmathprintnumber producing text in math mode.
Respectfully,
Mike.
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