I'm trying to use \groupplots and \pgfplotsinvokeforeach to generate a dynamic picture showing different profiles. Within those profiles I'd like to highlight different ranges (sequences) with a specific background color.
The sequences are in a separate *.csv file with it's corresponding start/end time and color code. I couldn't get those files loaded, reading each single row and highlight the corresponding range. Nevertheless, most of my code seems to work, since I get a result which is quite close but the inner loop does not seem to work correctly.
\documentclass[tikz]{standalone}
\usepackage{filecontents}
\usepackage{siunitx} % added this line because of marmot's comment
\usepackage{pgfplots}
\usepackage{tikz}
\RequirePackage{pgfplotstable} % Allows to read tables
\pgfplotsset{compat=newest} % Ensure compatibility mode
\usepgfplotslibrary{groupplots} % Groupplots (multiple x-Axis together)
\usetikzlibrary{backgrounds} % Background Library
\usetikzlibrary{calc} % Allows extended coordinate calculations
\newcommand{\tikzsetnextfilename}[1]{\ignorespaces}
\begin{document}
% externalise TikZ (when not in standalone) - use same filename
\tikzsetnextfilename{\currfilebase}
% Data table
\pgfplotstableset{
col sep={semicolon}
}
\begin{filecontents}{Profile1.csv}
t_h;I_A;U_V
0;0;3.584
0.06905;-0.67;3.53
0.1381;-0.67;3.514
0.2072;-0.67;3.5
0.2762;-0.67;3.484
0.3453;-0.67;3.466
0.4143;-0.67;3.448
0.4834;-0.67;3.428
0.5524;-0.67;3.412
0.6215;-0.67;3.399
0.6905;-0.67;3.385
0.7596;-0.67;3.369
0.8287;-0.67;3.35
0.8977;-0.67;3.321
0.9668;-0.67;3.275
1.036;-0.67;3.231
\end{filecontents}
\begin{filecontents}{Sequences1.csv}
tstart_h;tend_h;type
0.0;0.2762;1
0.3453;0.6215;2
0.6905;0.8977;3
0.9668;1.036;1
\end{filecontents}
\begin{filecontents}{Profile2.csv}
t_h;I_A;U_V
0;0;3.705
0.07158;0;3.705
0.1432;0;3.705
0.2148;1.675;3.851
0.2863;1.675;3.892
0.3579;1.675;3.93
0.4295;1.675;3.966
0.5011;1.675;4.001
0.5727;1.675;4.035
0.6443;1.675;4.071
0.7158;1.675;4.11
0.7874;1.675;4.154
0.859;1.675;4.196
0.9306;1.33;4.2
1.002;1.136;4.2
1.074;0.9927;4.2
\end{filecontents}
\begin{filecontents}{Sequences2.csv}
tstart_h;tend_h;type
0.0;0.2148;2
0.2863;0.5011;1
0.5727;0.859;2
0.9306;1.074;3
\end{filecontents}
\begin{tikzpicture}
\pgfplotsset{
plot coordinates/math parser=true,
unbounded coords=jump,
filter discard warning=false,
%% Colormap
colormap={sequencecolors}{
rgb=(0.75,0,0)
rgb=(0,0.75,0)
rgb=(0,0,0.75)
},
%% Axis
scale only axis,
width=0.8\linewidth,
height=2cm,
every axis/.append style={
line width=1pt,
tick style={line width=0.8pt},
grid style={dashed, black!20},
grid=major,
},
%% X-Axis
xmin=-0.1,
xmax=1.2,
}
%% Primary Y-Axis
\begin{groupplot}[
group style={
group size=1 by 2,
xlabels at=edge bottom,
xticklabels at=edge bottom,
vertical sep=2mm
},
tickpos=left,
%% X-Axis
xlabel={$t$ in \si{\hour}},
%% Y-Axis
ymin=2.4,
ymax=4.3,
]
\pgfplotsinvokeforeach{1,...,2}{
% Each Profile in seperate groupplot
\nextgroupplot [ylabel=Seq #1] {
% Profile
\addplot [color=blue, forget plot] table [x=t_h, y=U_V] {Profile#1.csv};
% Seqence
\pgfplotstableread{Sequences#1.csv}{\sequences}
\pgfplotstablegetrowsof{\sequences}
\pgfmathsetmacro{\rows}{\pgfplotsretval-1}
\begin{scope} [on background layer]
\pgfplotsinvokeforeach{1,...,\rows}{
% Get row from sequences
\pgfplotstablegetelem{#1}{tstart_h}\of{\sequences}\edef\tailTime{\pgfplotsretval}
\pgfplotstablegetelem{#1}{tend_h}\of{\sequences}\edef\headTime{\pgfplotsretval}
\pgfplotstablegetelem{#1}{type}\of{\sequences}\edef\typeColor{\pgfplotsretval}
%% This is where the magic should happen, second line is only for debugging, first line does not work properly but what's wrong?
% \fill [color of colormap={\typeColor}, opacity=0.1] (\tailTime , \pgfkeysvalueof{/pgfplots/ymin}) rectangle (\headTime, \pgfkeysvalueof{/pgfplots/ymax});
\fill [color of colormap={#1}, opacity=0.1] ( {#1*0.1}, \pgfkeysvalueof{/pgfplots/ymin}) rectangle ( {(#1+1)*0.1}, \pgfkeysvalueof{/pgfplots/ymax});
}
\end{scope}
}
}
\end{groupplot}
%% Secondary Y-Axis
\begin{groupplot}[
group style={
group size=1 by 2,
xlabels at=edge bottom,
xticklabels at=edge bottom,
vertical sep=2mm,
y descriptions at=edge right
},
grid=none,
tickpos=right,
%% X-Axis
xticklabels={,,},
%% Y-Axis
ymin=-6,
ymax=6,
]
\pgfplotsinvokeforeach{1,...,2}{
% Each Profile in seperate groupplot
\nextgroupplot [ylabel=Seq #1] {
% Profile
\addplot [color=red, forget plot] table [x=t_h, y=I_A] {Profile#1.csv};
}
}
\end{groupplot}
\end{tikzpicture}
\end{document}
Results in:
With the additional \fill command, I get several error message like:
filename.tex:149: Package PGF Math Error: Sorry, an internal routine of the loating point unit got an ill-formatted floating point number `130.0'. The unreadable part was near '130.0'..
filename.tex:149: Illegal unit of measure (pt inserted)
Doing everything by hand is not possible, the provided data is only a very tiny excerpt of the whole dataset. Is there a way to handle this or do I have to use a seperate column in the profile data which names the color code to handle this any other way?
\si{\hour}by\hour, it works. – Jan 06 '18 at 16:43siunitxpackage loaded – MFH Jan 06 '18 at 16:56