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Re: How to create an animated gif (was: How to roll up

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Francisco,

Thank you. A little while after I sent my query I was able to figure it out
myself and I got the same solution you did. And then I extended the command
in a fun (and mesmerizing) way with Animate.

   Animate[
 Graphics[{
   Blue,
   Table[Line[{{a - x, 0}, {0, x}, {x - a, 0}, {0, -x}, {a - x, 0}}], {x, 0,
a}]
   }],
 {a, 0, 20}]

I have a follow-on question. I tried creating an animated gif like this:

   list = Animate[
  Graphics[{
    Blue,
    Table[
     Line[{{a - x, 0}, {0, x}, {x - a, 0}, {0, -x}, {a - x, 0}}], {x, 0, a}]
    }],
  {a, 0, 20}]


   Export["animation.gif", list]


When I look at the gif file in a browser I don't get any animation. I get
just one frame. What am I missing?


Thanks.

Sol

2011/4/22 Francisco Javier Garc=EDa Capit=E1n <garciacapitan@gmail.com>

> Graphics[Table[Line[{{0, n}, {11 - n, 0}}], {n, 1, 10}]]
>
> Francisco Javier.
>
> 2011/4/22 Sol Lederman <sol.lederman@gmail.com>
>
>> Hi,
>>
>> I'm new to Mathematica.
>>
>> I have the following bit of graphics:
>>
>>   Graphics[{
>>  Line[{{0, 10}, {1, 0}}],
>>  Line[{{0, 9}, {2, 0}}],
>>  Line[{{0, 8}, {3, 0}}],
>>  Line[{{0, 7}, {4, 0}}],
>>  Line[{{0, 6}, {5, 0}}],
>>  Line[{{0, 5}, {6, 0}}],
>>  Line[{{0, 4}, {7, 0}}],
>>  Line[{{0, 3}, {8, 0}}],
>>  Line[{{0, 2}, {9, 0}}],
>>  Line[{{0, 1}, {10, 0}}],
>>  }]
>>
>>
>> I want to simplify it to do some sort of iteration to compute the end
>> points
>> of the lines. I can do this easily in a variety of procedural languages
>> but
>> I haven't yet grokked how Mathematica would do this.
>>
>>
>> Would someone please show me the short way, I imagine using Table somehow?
>>
>>
>> Thanks.
>>
>>
>> Sol
>>
>
>
>
> --
> ---
> Francisco Javier Garc=EDa Capit=E1n
> http://garciacapitan.auna.com
>

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Re: How to create an animated gif (was: How to roll up Sol Lederman <sol.lederman@gmail.com> - 2011-04-23 11:49 +0000

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