% This file is embedded in datatool-user.pdf version 3.4.1 2025-04-25
% Example 164 Scatter Plot with Custom Legend (Two Databases, Multiple Sets of Data)
% Label: "ex:growthscatter6col2dbmap2customlegend"
% arara: pdflatex
% arara: pdfcrop
\documentclass[12pt]{article}
\pagestyle{empty}
\usepackage{scontents}% to write test file with TABs preserved
\begin{scontents}[write-out={growth.tsv},overwrite]
Experiment 1		Experiment 2	
Time	Log Count	Time	Log Count
0	2.9	0	3.31
15	3.14	10	3.45
30	3.26	25	3.61
45	4.01	40	3.76
60	4.2	55	3.89
\end{scontents}

\begin{scontents}[write-out={growth2.tsv},overwrite]
Experiment 1		Experiment 2		Experiment 3	
Time	Log Count	Time	Log Count	Time	Log Count
0	3.21	0	3.39	0	3.28
15	3.43	10	3.51	10	3.45
30	3.68	25	3.65	20	3.57
45	4.4	40	3.84	30	3.64
60	4.8	55	3.92	40	3.95
\end{scontents}

\usepackage{dataplot}
\usetikzlibrary{shapes.callouts}
\DTLsetup{store-datum}
\DTLread[
 name=growthdata, format=tsv,csv-skip-lines=1,
 keys={Exp1Time,Exp1Count,Exp2Time,Exp2Count},
 csv-content=no-parse,
 data-types=decimal
]{growth}% growth.tsv

\DTLread[
 name=growthdata2, format=tsv,csv-skip-lines=1,
 keys={Exp1Time,Exp1Count,Exp2Time,Exp2Count,Exp3Time,Exp3Count},
 csv-content=no-parse,
 data-types=decimal
]{growth2}% growth2.tsv
 

\RenewDocumentCommand \DTLplotlegendxy { O{0} m O{0} m O{0} m }
{% 
 \DTLplotlegendy[#1]{#2}[#5]{#6}% 
}
\DTLplotlegendsetname{growthdata}{$T=6$}
\DTLplotlegendsetname{growthdata2}{$T=8$}
\RenewDocumentCommand \DTLplotlegendy { O{0} m O{0} m }{Experiment #3} % for the custom legend:
 \renewcommand{\DTLcustomlegend}[1]{% 
 \node
 [rectangle callout,fill=green!10,anchor=west,outer sep=10pt,
 callout relative pointer={(-40pt,10pt)}
 ] at (\DTLplotwidth,0.25\DTLplotheight)
 {#1} ;
} 
\begin{document}
\DTLplot{growthdata,growthdata2}{
 x={Exp1Time,Exp2Time,Exp3Time},
 y={Exp1Count,Exp2Count,Exp3Count},
 x-label={Time ($t$)},y-label={Log Count},
 legend=custom,
 width=2.5in,height=2.5in
} 
\end{document}
