Re: Troubleshooting Mathematic's Help

*To*: mathgroup at smc.vnet.net*Subject*: [mg72486] Re: [mg72473] Troubleshooting Mathematic's Help*From*: "Adriano Pascoletti" <pascolet at dimi.uniud.it>*Date*: Mon, 1 Jan 2007 03:59:03 -0500 (EST)

Steven Shippee wrote .. > In an old, old book by Bill Davis, Horacio Porta, & Jerry Uhl I saw an > example of how to draw a vector, e.g., > > << Graphics`Arrow` > > X = {3, 4}; > Show[Arrow[X, Tail -> {0, 0}, Blue], > Axes -> True, > PlotRange -> All, > AxesLabel -> {"x", "y"}, > AxesOrigin -> {0, 0}]; > > Not being that familiar with Mathematica, where would be the best place > to > start to debug this? see http://documents.wolfram.com/v5/Add-onsLinks/StandardPackages/Graphics/Arrow.html >Error message indicates it could be a problem with > Tail and/or with Arrow, looking at master index Arrow looks OK, unless > it > needs to be embedded within the Graphics command? Thanks in advance, > > Steven Shippee Try this X = {3, 4}; Show[Graphics[{Blue, Arrow[{0, 0}, X]}], Axes -> True, PlotRange -> All, AxesLabel -> {"x", "y"}, AxesOrigin -> {0, 0}]; Adriano Pascoletti