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Re: Help with Mathematica 7.0

  • To: mathgroup at smc.vnet.net
  • Subject: [mg96655] Re: Help with Mathematica 7.0
  • From: dh <dh at metrohm.com>
  • Date: Thu, 19 Feb 2009 03:34:07 -0500 (EST)
  • References: <gngk0r$jj8$1@smc.vnet.net>


Hi Tim,

it looks like version 7 does not allow "Arrow" in an epilog. try,e.g.:

Show[Graphics@Circle[], Epilog -> {Arrow[{0, 0}, 0.5 {1, 1}]}]

I think this is a bug you should report to Wolfram.

Daniel



Tim Brophy wrote:

> Hello All,

> 

> In Mathematica 5.2 and earlier I could create a Notebook like:

> 

> << Graphics`

> $FormatType = TraditionalForm;

> $TextStyle = {FontFamily -> "Times", FontSize -> 12};

> Strip = {Polygon[{{-0.1, 0, 1}, {

>          0.1, 0, 1}, {0.1, 0, 0} + s, {-0.1, 0, 0} + s}],

>              Polygon[{{-0.1, 0, 0} + s, {-0.1,

>              0, -1}, {0.1, 0, -1}, {0.1, 0, 0} + s}]};

> Magnet = {Cuboid[{-1, -0.5, -0.1}, {-0.2, 0.5, 0.1}],

>          Cuboid[{0.2, -0.5, -0.1}, {1, 0.5, 0.1}]}

> Wire = {Line[{{0, 0, -1}, {0, 0, -1.2}, {-1.4, 0, -1.2}, {-1.4,

>              0, -0.2}}], Line[{{-1.2, 0, -0.2}, {-1.7, 0, -0.2}}], \

> Line[{{-1.3, 0, 0}, {-1.6, 0, 0}}], Line[{{-1.4, 0, 0}, {-1.4, 0, 1},  

> {-0.1,

>            0, 1}}]};

> circuit = Table[

>      Show[Graphics3D[{Magnet,

>          Strip, Wire}], Epilog -> {Text["N", {.402, .504}], Text["S",  

> {.62, \

> .47}], Red, Arrow[{.53, .71}, {.53, .16}],

>                Text["Current", {.7, 0.69 - .394t}]}, Boxed -> False,

>                 PlotRange -> {{-1.8, 1.5}, {-1,

>              1}, {-1.3, 1.3}}], {t, 0, 1, 0.05}];

> Export["Conductor.gif", circuit, ConversionOptions -> {"Loop" -> True}]

> 

> to create animations as in http://web.me.com/timbrophy/physicsnow/currentm.html

> 

> In versions 6 and 7 the Table command does not produce all the files I  

> need for the animated gifs. How can I do the same?

> 

> Manipulate is no good as I simply want gifs to demonstrate different  

> aspects of Physics to my students.

> 

> Tim Brophy

> 




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