How to put a border around a tikz figure with tcbox? - tikz

Question

The following code produces the figure I want but only when I remove the \tcbox. I'd like a border around the figure. What I have done below works with other tikz figures. The problem seems to be with the table data. Can anyone please advise?
\begin{figure}
\tcbox{
\begin{tikzpicture}
\begin{axis}[
legend pos=south east,
xlabel=Variable 1, % label x axis
ylabel=Variable 2, % label y axis
]
\addplot[
scatter, only marks,
scatter/classes={
a={mark=square*,blue},
b={mark=triangle*,red}
}
]
table[x=x,y=y,meta=label]{
x y label
0.1 0.35 a
0.2 0.4 a
0.25 0.35 a
0.3 0.4 a
0.3 0.35 a
0.4 0.3 a
0.45 0.3 a
0.4 0.4 a
0.6 0.7 b
0.65 0.55 b
0.65 0.55 b
0.7 0.6 b
0.75 0.65 b
0.8 0.75 b
0.9 0.6 b
0.7 0.6 b
0.5 0.7 b
0.5 0.55 b
0.6 0.8 b
};
\legend{}
\end{axis}
\end{tikzpicture}
}
\caption{CAP HERE}
\label{statsexample}
\end{figure}

Answer 1

The issue is with your row separator. You can use row sep=crcr instead:
\begin{figure}
\tcbox{
\begin{tikzpicture}
\begin{axis}[
legend pos=south east,
xlabel=Variable 1, % label x axis
ylabel=Variable 2, % label y axis
]
\addplot[
scatter, only marks,
scatter/classes={
a={mark=square*,blue},
b={mark=triangle*,red}
}
]
table[x=x,y=y,meta=label,row sep=crcr]{
x y label\\
0.1 0.35 a\\
0.2 0.4 a\\
0.25 0.35 a\\
0.3 0.4 a\\
0.3 0.35 a\\
0.4 0.3 a\\
0.45 0.3 a\\
0.4 0.4 a\\
0.6 0.7 b\\
0.65 0.55 b\\
0.65 0.55 b\\
0.7 0.6 b\\
0.75 0.65 b\\
0.8 0.75 b\\
0.9 0.6 b\\
0.7 0.6 b\\
0.5 0.7 b\\
0.5 0.55 b\\
0.6 0.8 b\\
};
\end{axis}
\end{tikzpicture}
}
\caption{CAP HERE}
\label{statsexample}
\end{figure}