Animate Command and Vector Reference

*To*: mathgroup at smc.vnet.net*Subject*: [mg131400] Animate Command and Vector Reference*From*: William Dickinson <william.dickinson.0718 at gmail.com>*Date*: Wed, 3 Jul 2013 04:59:46 -0400 (EDT)*Delivered-to*: l-mathgroup@mail-archive0.wolfram.com*Delivered-to*: l-mathgroup@wolfram.com*Delivered-to*: mathgroup-outx@smc.vnet.net*Delivered-to*: mathgroup-newsendx@smc.vnet.net

I'm new to Mathematica and I want to create some animations. I tried something like this: sub = {{a, 1}, {a^2, 1}} Animate[Graphics[{Line[{{0, 0}, sub[[1]]}]}], {a, -1, 1}] and Mathematica give me an error. This error ( Coordinate {a, 1} should be a pair of numbers, or a Scaled or Offset form.) is not helpful. I know that I can fix this by changing sub[[1]] to {a,1}, but this is not a great solution. I have several places in the actual Animate command that use sub[[1]] (some in conjunction with a Table command) and it would be painful to do all of the replacing and rewriting. How can I make something like this work? I suspect that I'm missing something simple.... Thanks in advance! Will

**Follow-Ups**:**Re: Animate Command and Vector Reference***From:*Bob Hanlon <hanlonr357@gmail.com>