# How to set bodegraph/gnuplot prefix in preamble?

This is a duplicate of this question, I have the same problem but I would insert the option

``````gnuplot def/.append style={prefix={}},
``````

in preamble without repeating it for each `tikzpicture`. I already have in preamble

``````\usepgfplotslibrary{external}
\tikzexternalize[prefix=tikz/, optimize command away=\includepdf]
``````

and I'll like to add `bodegraph` plots too in the same `tikz/` subfolder