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 >