I'm wondering about a way to exclude the axis labels and axis graduation from how latex will center the figure with respect to the caption. Labels and graduation along the y-axis (assuming it lies on the left of the figure) will tend to move the rest of the content to the right. I feel like it looks better when only the "main" content serves for centering purposes. Is such feature available?
[Tex/LaTex] pgfplots and figure centering
horizontal alignmentpgfplots
Related Solutions
Step 1: steal the coordinatess of axes from the TikZ picture.
Step 2: apply an offset to the caption
\documentclass{article}
\usepackage{tikz,pgfplots,lipsum}
\makeatletter
\newdimen\pgf@xd
\begin{document}
\lipsum[1]
\begin{figure}[h!]\centering
\begin{tikzpicture}
\begin{axis}[name=my plot,xlabel={x},ylabel={y},
width=\textwidth,height=0.25\textwidth]
\addplot{x};
\end{axis}
\tikz@parse@node(my plot.south) \pgf@xd=\pgf@x
\tikz@parse@node(my plot.outer south) \global\advance\pgf@xd by-\pgf@x
\end{tikzpicture}
\caption{Some caption. .noitpac emoS :1 erugiF\kern-2\pgf@xd}
\end{figure}
\lipsum[2]
\end{document}
Ok, I did get somewhere, but it's still no full solution; so if anyone can suggest a better approach, I'd rather accept that answer.
The "Could not parse input '' as a floating point number" got solved by using xticklabels from table in the groupplot options AND x expr instead of x index in the \addplot table options. (Note, I've also tried with symbolic x coords and x index=\coordindex, and with that got:
" ! Package pgfplots Error: Sorry, the input coordinate `0' has not been defined
with 'symbolic x coords={c002,c003,c004,}... Maybe it has been misspelled?."
). I got to that thanks to this comment from pgfplots: how to load distinct symbolic ticks/labels from file?
"flexible ticklabels from table won't help here, because that's just for generating the labels, but not the coordinates. You're currently plotting the data points at (i|i), where i is the coordinate index, so filtering duplicates out of the labels won't help you. Rather, you need to map a, b, c... to x=1, 2, 3... and X, Y, Z to y=1, 2, 3... (which is what symbolic x coords does)."
Not sure I fully understand that, but what I need is that the labels for x=0,1,2,... are "c002","c003","c004",... - so that eventually I could control discontinuities by setting xmin and xmax as numbers (and the labels would follow those settings).
For the second part, I really couldn't find a proper syntax for \addplot table - so here I iterate through the table, and create a coordinate list, that I use with \addplot coordinates. And finally I get a rendering close to what I want:
... but with the problem, that xlabels are incorrect - if I use . (see edit below)xtick=data, only the first ("c002") is shown at correct location (probably the others are not shown because I do not use \addplot table here); if I don't use it, as above, then only "c003" and "c004" are printed, but not on a correct location
So, if anyone can suggest how to make the xtick labels correct, and if there is a syntax so I can achieve the same output with \addplot table instead (without having to loop through the table to re-create coordinates), please post back an answer.
Here is the MWE so far:
\documentclass{article}
\usepackage{pgfplots}
\usepackage{pgfplotstable}
\usepackage{adjustbox}
\usepackage{tikz}
\usetikzlibrary{pgfplots.groupplots}
\usetikzlibrary{shapes}
\usetikzlibrary{positioning}
\usetikzlibrary{decorations.pathreplacing}
\usepackage{etoolbox}
\pgfplotstableread[
col sep=comma,
header=false,
columns/0/.style={string type}, % nowork here; on table typeset only
]{
c002,128,64,0.000119,-1,-1,0.000162,-1,-1,0.000494,-1,-1,0.001540,1,65,0.001906,0,1,0.002997,1,1,0.003341,0,65,0.004432,1,65,0.004797,0,1,0.005889,1,1,0.006253,0,65,
c003,128,64,0.000166,-1,-1,0.000463,-1,-1,0.001546,1,65,0.001936,0,1,0.002981,1,1,0.003362,0,65,0.004437,1,65,0.004939,0,1,0.005918,1,1,0.006269,0,65,,,,
c004,128,64,0.000118,-1,-1,0.000161,-1,-1,0.000456,-1,-1,0.001518,1,65,0.001903,0,1,0.002973,1,1,0.003339,0,65,0.004410,1,65,0.004795,0,1,0.005866,1,1,0.006252,0,65,
}\mytable
\pgfplotstablegetrowsof{\mytable} %Determine no. of rows
\pgfmathtruncatemacro{\rows}{\pgfplotsretval} % pgfmathsetmacro float, this int
\pgfmathtruncatemacro{\lastrow}{\rows-1}
\pgfplotstablegetcolsof{\mytable} %
\edef\numcolsstr{\pgfplotsretval}%
\pgfmathtruncatemacro{\lastcol}{\numcolsstr-1}
\begin{document}
% https://tex.stackexchange.com/questions/153853/pgfplots-how-to-load-distinct-symbolic-ticks-labels-from-file/153971#153971
\def\xlistmacro{}
\def\xliststring{}
\pgfplotstableforeachcolumnelement{[index]0}\of\mytable\as\entry{%
\xifinlist{\entry}{\xlistmacro}{}{
\listxadd{\xlistmacro}{\entry}
\edef\xliststring{\xliststring\entry,}
}
}
\begin{center}
\begin{tikzpicture}
\begin{groupplot}[
group style={
group name=my fancy plots,
group size=1 by 1,
yticklabels at=edge left,
%xticklabels at=edge bottom,
%vertical sep=0pt,
horizontal sep=0pt,
% no xtick/labels here: ! Undefined control sequence.
%\mytable ->\pgfpl@@ {0}\pgfpl@@ {1}
%xticklabels from table={\mytable}{0},%{[index]0},
%xtick=data,
},
height=6cm,
ymin=0, ymax=7e-3,
domain=0:80,
xticklabels from table={\mytable}{0},%{[index]0},
%xticklabels/.expand once={\xliststring}, % also works
% xtick=data, % will only print the first, 'c002', and no others
xlabel=test variants,
x tick label style={rotate=-45, anchor=west, align=center, font=\tiny},
x=0.5cm, % set x scale (for width)
/tikz/only marks, % no lines - scatter plot
]
\nextgroupplot[
xmin=0,xmax=5,
axis y line=left,
%axis x discontinuity=parallel, % disc. is at start, so avoid for first
axis x line=bottom,
x axis line style=-, % switch off the axis arrow tips,
%width=4.5cm, % don't set width,
% y filter/.code={\ifx\pgfmathresult\empty\else#1\fi},
mark=o, % is ignored for individual addplots
]
%%\coordindex yields the current index of the table row (starting with 0).
%% the below works as expected (but don't know how to select only certain
%% samples via table - so here only one sample is plotted as per y expr):
% \addplot table[
% %x index = \coordindex, % causes: Could not parse input 'c002' as a floating point
% x expr = \coordindex, % passes!
% y expr = \thisrowno{3},
% ] \mytable;
%
%% NOTE: in pgfplots 1.5.1, adding even empty braces to \addplot here
%% causes the coordinates plot not to be shown! example - try the below:
% \addplot[] coordinates{ (0,2e-4) (0,4e-4) };
\foreach \r in {0,1,...,\lastrow}{%
\xdef\tempCoords{} %
\pgfplotstablegetelem{\r}{[index]0}\of\mytable%
\xdef\rowlabel{\pgfplotsretval}
\foreach \c in {1,2,...,\lastcol}{ % skip column 0
\pgfmathtruncatemacro{\modres}{mod(\c,3)} % modulo
\ifnum\modres=0{%
\pgfplotstablegetelem{\r}{[index]\c}\of\mytable%
%\typeout{[\r,\c]: '\pgfplotsretval' \ifx\pgfplotsretval\empty EMPTY \else\fi } % [199,27]: '' EMPTY ...
\ifx\pgfplotsretval\empty\else{
\xdef\tempCoords{\tempCoords (\r,\pgfplotsretval)\space}}\fi % end \ifx
% \xdef\tempCoords{\tempCoords (\rowlabel,\pgfplotsretval)\space}}\fi % end \ifx
}\fi % end \ifnum
} % end \foreach \c
\typeout{coordinates {\tempCoords};}
% note: using this plainly:
%\addplot coordinates {\tempCoords};
% causes: ! Package pgfplots Error: Sorry, I could not read the plot coordinates near '(0,0.000119) ...
% note: have to use \addplot+[] here, else \addplot[] resets!
% also, color=blue controls stroke of mark, but not its fill
\edef\temp{ \noexpand\addplot+[color=blue,mark=*,mark options={blue},] coordinates{ \tempCoords }; }
\temp % execute addplot command
} % end \foreach \r
\end{groupplot}
\end{tikzpicture}
\end{center}
\end{document}
EDIT: got the labels to solve; simply, do one \addplot table before the for loop, where simply the y value is set to 0; this would "plot" invisible points at the (xtickindex,0) coordinate - and forces the labels to appear. So simply paste this snippet before the \foreach (and enable the xtick=data) in the MWE above:
% use [mark=*,mark options={red}] to debug
\addplot+[mark=none] table[x expr=\coordindex, y expr=0.0] \mytable;
... and then the output is finally as expected:
Best Answer
Using
pgf2.10, you can provide the argumentstrim axis leftandtrim axis rightto thetikzpictureenvironment:gives
This works without disturbing the bounding box for the purposes of image externalisation and so forth (avoiding some of the problems discussed in @Martin's earlier question).