On 19.03.2017 16:56, Pablo Rodriguez wrote:
is there any reason not to use the following instead of your way below?

  for i = 1,n do
    tex.print("(" .. vecteurX[i] .. ", " .. vecteurY[i] .. ")\\par")

I don't think that this is a good approach. Refer to chapter 11.6 of "Programming in Lua" to see why string concatenation is computationally expensive. (It wouldn't matter in this simple case, but it's not a good habit to develop.)

All best

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