Take the 2-minute tour ×
Mathematica Stack Exchange is a question and answer site for users of Mathematica. It's 100% free, no registration required.

Is this a bug, or something going over my head? When using the following code, nothing "special" happens:

ParametricPlot[a {Cos[t], Sin[t]}, {a, 1, 2}, {t, 0, 2 Pi}, 
 Mesh -> None, PlotStyle -> Opacity[0.2]]

it works as expected, one gets this graphic, without any mesh lines:

enter image description here

When adding Graphics[] in front of that—as I'd like to Show such a ParametricPlot with some other graphics, I get this:

Show[
 Graphics[],
 ParametricPlot[a {Cos[t], Sin[t]}, {a, 1, 2}, {t, 0, 2 Pi}, 
  Mesh -> None, PlotStyle -> Opacity[0.2]]
 ]

yields:

enter image description here

Why do those mesh-lines come up? Are those actually Mesh-lines, as I used Mesh -> None? How can I delete those lines, while still using Show and others Graphics[]?

Thanks for all help!

share|improve this question
1  
No, both codes give me the first result. –  Kuba Dec 1 '13 at 9:18
1  
works ok on V 9.01, windows 7 –  Nasser Dec 1 '13 at 9:23
1  
No mesh on linux either. –  b.gatessucks Dec 1 '13 at 9:40
1  
I'm using 9.0.1.0 on OS X 10.9 - I see the same problem. –  Stephen Luttrell Dec 1 '13 at 11:31
2  
Try Show[Graphics[{}, Method -> {"TransparentPolygonMesh" -> True} ], ParametricPlot[a {Cos[t], Sin[t]}, {a, 1, 2}, {t, 0, 2 Pi}, Mesh -> None, PlotStyle -> Opacity[0.2]]] - see this Q&A for more... –  cormullion Dec 1 '13 at 12:01
show 9 more comments

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Browse other questions tagged or ask your own question.