Re: Can an arrow be drawn on a 3D plot?

• To: mathgroup at smc.vnet.net
• Subject: [mg81418] Re: Can an arrow be drawn on a 3D plot?
• From: "Kevin J. McCann" <Kevin.McCann at umbc.edu>
• Date: Sat, 22 Sep 2007 03:32:54 -0400 (EDT)
• Organization: University System of Maryland
• References: <fcnkbv\$rqc\$1@smc.vnet.net> <19538521.1190210316107.JavaMail.root@m35> <fct95r\$qiu\$1@smc.vnet.net>

```I agree with Bobby's comments. David's DrawGraphics6 package is
extremely well done and more than worth the price. I know that David has
been working overtime to implement the new version 6 stuff. I use it all
the time and am constantly impressed (and thankful that he did it).

Kevin
DrMajorBob wrote:
> David's package is awesome. The package functions make many things easy
> that Mathematica still makes hard on its own. Even more important, perhaps, the
> examples explore the boundaries of visual presentation in Mathematica (or any
> environment) and demonstrate, expertly, how to choose and combine graphic
> elements for maximum information content and effect.
>
> Bobby
>
> On Wed, 19 Sep 2007 04:33:42 -0500, David Park <djmpark at comcast.net> wrote:
>
>> DrawGraphics has Arrow3D and ArrowCurve3D commands. The following code
>> puts
>> two arrowcones on the green contour line.
>>
>> Needs["DrawGraphics6`DrawingMaster`"]
>>
>> f[z_] := z;
>> Draw3DItems[
>>  {Opacity[0.7, Red],
>>   ParametricDraw3D[{Re[z], Im[z], Im[f[z]]} /. z -> r*Exp[I*t], {r, 0,
>>      5}, {t, -Pi, Pi}],
>>   pts = ParametricDraw3D[{Re[z], Im[z], Im[f[z]]} /.
>>       z -> 2*Exp[I*t], {t, -Pi, Pi}] // Extract3DLinePoints;
>>   ArrowCurve3D[
>>    pts, {0.5, 1.0}, {0.05,
>>     PlotStyle -> {Opacity[1, Darker@Green]}}, {AbsoluteThickness[2],
>>     Darker@Green}]
>>   },
>>  Axes -> True,
>>  ImageSize -> {500, 500}]
>>
>> DrawGraphics is sold for \$50. It, of course, has many other features than
>> Arrow3D. You can read more about it at my web site. DrawGraphics has now
>> been updated to Version 6. Present purchasers can freely update and have
>> received email notices to this effect. Some have changed their email
>> addresses and did  not receive the notice. If such persons see the notice
>> here they may contact me.
>>
>>
>
>
>

```

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