File:Moebius Surface 1 Display Small.png

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Description

A moebius strip parametrized by the following equations:

,

where n=1.

This plot is for display purposes by itself as a thumbnail. If you are looking for the image that is part of the sequence from n=0 to 1, see below for the other verison, along with a larger version (800px) of this image
Date
Source

Self-made, with Mathematica 5.1

 
This diagram was created with Mathematica by n.
Author Inductiveload
Permission
(Reusing this file)
Public domain I, the copyright holder of this work, release this work into the public domain. This applies worldwide.
In some countries this may not be legally possible; if so:
I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.
Other versions
     Mathematical Function Plot
Description Moebius Strip, 1 half-turn (n=1)
Equation :
Co-ordinate System Cartesian (Parametric Plot)
u Range 0 .. 4π
v Range 0 .. 0.3

Mathematica Code

Please be aware that at the time of uploading (15:27, 19 June 2007 (UTC)), this code may take a significant amount of time to execute on a consumer-level computer.
This uses Chris Hill's antialiasing code to average pixels and produce a less jagged image. The original code can be found here.

This code requires the following packages:

<<Graphics`Graphics`
MoebiusStrip[r_:1] =
    Function[
      {u, v, n},
      r {Cos[u] + v Cos[n u/2]Cos[u],
          Sin[u] + v Cos[n u/2]Sin[u],
          v Sin[n u/2],
          {EdgeForm[AbsoluteThickness[4]]}}];

aa[gr_] := Module[{siz, kersiz, ker, dat, as, ave, is, ar},
    is = ImageSize /. Options[gr, ImageSize];
    ar = AspectRatio /. Options[gr, AspectRatio];
    If[! NumberQ[is], is = 288];
    kersiz = 4;
    img = ImportString[ExportString[gr, "PNG", ImageSize -> (
      is kersiz)], "PNG"];
    siz = Reverse@Dimensions[img[[1, 1]]][[{1, 2}]];
    ker = Table[N[1/kersiz^2], {kersiz}, {kersiz}];
    dat = N[img[[1, 1]]];
    as = Dimensions[dat];
    ave = Partition[Transpose[Flatten[ListConvolve[ker, dat[[All, All, #]]]] \
& /@ Range[as[[3]]]], as[[2]] - kersiz + 1];
    ave = Take[ave, Sequence @@ ({1, Dimensions[ave][[#]], 
    kersiz} & /@ Range[Length[Dimensions[ave]] - 1])];
    Show[Graphics[Raster[ave, {{0, 0}, siz/kersiz}, {0, 255}, ColorFunction ->
     RGBColor]], PlotRange -> {{0, siz[[1]]/kersiz}, {
  0, siz[[2]]/kersiz}}, ImageSize -> is, AspectRatio -> ar]
    ]

deg = 1;
gr = ParametricPlot3D[Evaluate[MoebiusStrip[][u, v, deg]],
      {u, 0, 4π},
      {v, 0, .3},
      PlotPoints -> {99, 3},
      PlotRange -> {{-1.3, 1.3}, {-1.3, 1.3}, {-0.7, 0.7}},
      Boxed -> False,
      Axes -> False,
      ImageSize -> 220,
      PlotRegion -> {{-0.22, 1.15}, {-0.5, 1.4}},
      DisplayFunction -> Identity
      ];
finalgraphic = aa[gr];

Export["Moebius Surface " <> ToString[deg] <> ".png", finalgraphic]

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depicts

19 June 2007

File history

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Date/TimeThumbnailDimensionsUserComment
current15:31, 19 June 2007Thumbnail for version as of 15:31, 19 June 2007180 × 140 (16 KB)Inductiveload
15:30, 19 June 2007Thumbnail for version as of 15:30, 19 June 2007200 × 150 (18 KB)Inductiveload
15:27, 19 June 2007Thumbnail for version as of 15:27, 19 June 2007200 × 150 (18 KB)Inductiveload{{Information |Description=A moebius strip parametrized by the following equations: :<math>x = \cos u + v\cos\frac{nu}{2}\cos u</math> :<math>y = \sin u + v\cos\frac{nu}{2}\sin u</math> :<math>z = v\sin\frac{nu}{2}</math>, where ''n''=1. This plot is for

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