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Disclaimer: I am new-ish to LaTeX, and self-taught.

I am trying to make a "Unit Circle" TikZ graphic, in which I would like to have the \degree symbol from the gensymb package in the label text of a node.

My current workflow involves the standalone package, and uses the \include command to create a sort of "master file" containing each of my creations on its own page which I reference in other Overleaf projects using the 'output file from another project' and the graphicx package to reduce compile time. There is probably a better way to do this, but it keeps it simple enough for me and I like having everything in more or less the same place so I can make quick references between my images. It has worked so far, until now...

My problem is, it is preferable if I don't have to update the preamble of my master document every time I add a new picture, especially since that's where I define things like colors which occasionally use identical names (e.g. gradient1). Hence, I load \usepackage[subpreambles]{standalone} to read the preamble of each standalone separately. Again, this has worked well enough so far that I have been able to solve any hiccups myself.

I have failed to diagnose why exactly, but there is something going on with the [subpreambles] tag and loading the gensymb package. Here is my MWE:

\documentclass[tikz]{standalone}
\usepackage{textcomp,gensymb} % for degree symbol

\begin{document}
\begin{tikzpicture}
        \node at (0,0) {$0\degree$};
\end{tikzpicture}
\end{document}

which I have in Overleaf as degree-test.tex. When I try to reference this file in another:

\documentclass[tikz]{standalone}
\usepackage[subpreambles]{standalone}

\begin{document}
    \include{degree-test}
\end{document}

I get the error: Package standalone Warning: Sub-preamble of file 'degree-test.tex' has changed. Content will be ignored. Please rerun LaTeX! on input line 4.

I compile with LuaLaTeX, but other compilers produce similar results. Even removing \degree from the node label produces the error, despite not actually using the symbol. There must be some kind of conflict with commands which define certain things during the preamble, but I don't know how to read the error logs and they're very frightening on the surface.

Is there a simple fix for this?

EDIT: I have also disqualified \documentclass[tikz]{standalone} and \include vs \includestandalone as culprits.

Altissimo
  • 146

1 Answers1

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So, according to user @Davislor on this TeX.SE forum, I can remove the package gensymb and simply use \textdegree which is a part of modern LaTeX distributions. It does not work in math mode, which is unfortunate, but for my application this is begrudgingly acceptable. Using $\textrm{\textdegree}$ is fine.

For those curious, the \ang{} provided by the siunitx package looks too empty for my taste, which as demonstrated in the post linked above is the same as ^\circ.

Altissimo
  • 146