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I am just a beginner and am writing my first report in LaTeX, so excuse me if the solution is very obvious. I am trying to plot asymptotic approximation of bode plots using the package bodeplot as answered here, I simply copied and pasted the following sample code as give in the documentation,

\begin{BodeMagPlot}[% axes/{height=2cm, width=4cm} ] {0.01} {100} \addBodeZPKPlots[% asymptotic/{blue,dotted,thick}% ] {magnitude} {% z/{0,{-0.1,-0.5},{-0.1,0.5}}, p/{{-0.5,-10},{-0.5,10}}, k/10% } \end{BodeMagPlot}

Now if I am using Overleaf to compile, I am getting the expected results, but then when I use the exact syntax in MikTeX installed on my PC, I do not get any plot, and instead, two warnings messages are displayed:

\ifplatform.sty:0:shell escape is disabled, so I can only detect \ifwindows

You have an axis with empty range (in direction y). Replacing it with a default range and clearing all plots

As far as I can tell the second warning is why I didn't get any plot, but I couldn't understand how to rectify this by giving the range for y-axis, and why does this run in Overleaf, but not on my system? And if the first warning is responsible for this somehow.

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  • Welcome! Overleaf compiles your document in a sandbox and enables unrestricted shell-escape because the sandbox makes that safe. TeX distributions don't enable unrestricted shell-escape by default because it is a security vulnerability. So you need to compile this document with shell-escape. For TeX Live, it would be -shell-escape or --shell-escape. MikTeX has a similar option, but I think it might be differently named. (If you are using LuaTeX, it gets a tiny bit more complicated, but this is sufficient for other engines.) Commented Jul 12, 2024 at 0:56

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Like the comment says, you need to invoke LaTeX with the --shell-escape flag.

pdflatex --shell-escape file.tex

The other option is to use native pgf instead of gnuplot to do the computations. External commands (i.e., --shell-escape) are needed only for gnuplot. If you do not use gnuplot, then you do not need --shell-escape.

To do this, use the bodeplot package withe the pgf option:

\usepackage[pgf]{bodeplot}

The use of lualatex is recommended if you use native pgf to do calculations.

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What I was missing here was that the package uses GNUplot rather than pgf, installing GNUplot resolved the issue.

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