The tikzscale package overloads the \includegraphics command, uses a bounding box to calculate the size of a pgfplots plot, and adjusts the size of the plot such that the target height and width are met, while preserving font sizes. This approach works well unless you have \subcaption{} and \label{} embedded in the figure, which results in multiply-defined labels.
- Add the following code to your preamble.
<unique name>should be replaced by an appropriate toggle name.\newtoggleshould be repeated for every figure containing a plot, each with a unique name.
\usepackage{etoolbox}
\newtoggle{<unique name>}
- In the
tikzpictureenvironment, change\subcaption{<subcaption text> \label{<label>}}to
\nottoggle{<unique name>}{\parbox{<width>}{\subcaptiontext*[<id>]{<subcaption text>}}}{\subcaption{<subcaption text> \label{<label>}}}
<id> refers to an integer counting up from 1, one for each subcaption.
- After the
\end{figure}of the corresponding figure, append\toggletrue{<unique name>}.
After following these steps, you should be able to compile the document, hopefully without the multiply-defined labels warning.