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I'm trying to buld the example called Elliptic Curve Group Operations from the TikZ for Cryptographers website. I have PGF 3.0.1, installed in my home dir under ~/texmf/tex/latex/pgf_3.0.1/.

But I'm not able to compile the example. I'm running

pdflatex --shell-escape ec-rules.tex

Unfortunately I get the error:

Package pgf Error: No shape named intersection-1 is known

I have no clue, what's the issue (since I never worked with intersections).

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  • that means two paths don't intersect
    – percusse
    Jan 18, 2018 at 12:52
  • It is working as expected for the file given there.
    – mas
    Jan 18, 2018 at 13:02
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    Before the error I got a warning: Package pgf Warning: Plot data file ec_group_operations.curve-22.table' not fo und. on input line 61. Do you have gnuplot installed? Cos I don't, so...
    – Sigur
    Jan 18, 2018 at 13:12
  • Good match @Sigur. I installed gnuplot and it works now!
    – Dennis
    Jan 18, 2018 at 14:05

1 Answer 1

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As figured out by @Sigur, I had to install gnuplot.

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