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This question already has an answer here:

I want to control the thickness of the line in ParametricPlot3D. I read the answer in
Thickness definition for ParametricPlot3D but it does not solve the problem. In the example below,

thickness = 3.0;ParametricPlot3D[{Sin[u], Cos[u], u/10}, {u, 0, 20}, PlotStyle -> AbsoluteThickness[thickness]]

the thickness changes abruptly from something very thin (for my taste) to something very thick (for my taste) by changing thickness from 3.0 to 3.1. Thickness seems to increase smoothly only above 3 or so. Is it possible to control the line thickness of thinner lines in a smooth way?

[Edited after the original posting] A new observation, when using \PlotStyle->Dashed the line thickness behaves as expected, it increases continuously from 0 up.

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marked as duplicate by Henrik Schumacher, Coolwater, Michael E2 plotting Jan 11 '18 at 15:37

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

  • $\begingroup$ This is a problem that has been found before... Unfortunately, I know of no solution. $\endgroup$ – Henrik Schumacher Jan 11 '18 at 12:52
  • $\begingroup$ @HenrikSchumacher I think it's a duplicate. Do you agree? $\endgroup$ – Michael E2 Jan 11 '18 at 15:09
  • $\begingroup$ @MichaelE2 Okay, I've just marked it as duplicate. $\endgroup$ – Henrik Schumacher Jan 11 '18 at 15:11
  • $\begingroup$ Thanks for pointing out the previous discussion, I had missed it. $\endgroup$ – Themis Jan 12 '18 at 12:56

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