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Re: Where did the 3 geometric dimensions come from?

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On 6/25/2016 6:25 PM, ClutterFreak wrote:
> On Sat, 25 Jun 2016 22:44:24 -0000,
> jimp@specsol.spam.sux.com wrote:
>
>> ClutterFreak <ClutterFreak@fakeaddress.com> wrote:
>>> On Fri, 24 Jun 2016 10:38:52 -0400, Michael J.
>>> Strickland wrote:
>>>
>>>> We could easily number all locations in a cubical area with one
>>>> coordinate starting at top left, near and progressing to bottom, right
>>>> , far
>>>
>>> I'm not sure but I think computers store 3-D
>>> information in that manner, using only one number to
>>> find various parts of it.
>>
>> Ummm, no, computers store 3D information in whatever manner the programmer
>> used, which could be anything. Generally it is in whatever is the easiest
>> convention for the task at hand.
>>
>> The only computers I have ever heard of that knew anything about coordinates
>> were purpose built analog computers that used spherical coordinates.
>>
>> The task of locating a freeway off ramp is very different than the task
>> of defining an object for a 3D printer.
>>

> Again I'm not sure (this is very old stuff I'm trying
> to remember) but when you have, say, an array variable
> like A(i,j,k) with i going from 1 to 10, j from 1 to
> 100, and k from 1 to 5 computer allocates memory
> locations for it that form a continuous chain of 5000
> location (each for a different value of that
> variable). And when you want to retrieve what's stored
> at A(3,70,4) computer does 3 + 70*10 + 4*100 = 1103
> and goes to 1103rd position along that chain to get
> the value. It is similar to how Strickland wants to
> access a cubic volume using only one number.
>
> But I'm not sure :)


strickland just has a single dimensional array covering his "cubic 
spaces".  He has to remember where the string goes through the cubes.

you can address the same "cubic spaces" by braking it up into multi 
dimensional arrays.  It does not have to correspond to x,y,z, but that 
is readily convenient.

It is just addressing a finite set.  If you had infinite items or a lot 
of them, then spherical, cylendrical or x,y,z make more sense.

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Re: Where did the 3 geometric dimensions come from? Michael J. Strickland <michael06582@comcast.net> - 2016-06-24 10:38 -0400
  Re: Where did the 3 geometric dimensions come from? Sergio <invalid@invalid.com> - 2016-06-24 10:02 -0500
    Re: Re: Where did the 3 geometric dimensions come from? Michael J. Strickland <michael06582@comcast.net> - 2016-06-25 01:29 -0400
      Re: Where did the 3 geometric dimensions come from? Sergio <invalid@invalid.com> - 2016-06-25 15:01 -0500
    Re: Where did the 3 geometric dimensions come from? "Y.Porat" <y.y.porat@gmail.com> - 2016-06-26 01:04 -0700
  Re: Where did the 3 geometric dimensions come from? jimp@specsol.spam.sux.com - 2016-06-24 16:15 +0000
    Re: Where did the 3 geometric dimensions come from? benj <benj@nobody.net> - 2016-06-24 17:24 -0400
      Re: Where did the 3 geometric dimensions come from? jimp@specsol.spam.sux.com - 2016-06-24 22:03 +0000
        Re: Where did the 3 geometric dimensions come from? benj <benj@nobody.net> - 2016-06-24 18:25 -0400
          Re: Where did the 3 geometric dimensions come from? jimp@specsol.spam.sux.com - 2016-06-24 22:44 +0000
    Re: Re: Where did the 3 geometric dimensions come from? Michael J. Strickland <michael06582@comcast.net> - 2016-06-25 01:33 -0400
      Re: Where did the 3 geometric dimensions come from? jimp@specsol.spam.sux.com - 2016-06-25 15:44 +0000
        Re: Re: Where did the 3 geometric dimensions come from? Michael J. Strickland <michael06582@comcast.net> - 2016-06-26 15:34 -0400
          Re: Where did the 3 geometric dimensions come from? Sergio <invalid@invalid.com> - 2016-06-27 09:06 -0500
  Re: Where did the 3 geometric dimensions come from? ClutterFreak <ClutterFreak@FakeAddress.com> - 2016-06-25 16:45 -0500
    Re: Where did the 3 geometric dimensions come from? jimp@specsol.spam.sux.com - 2016-06-25 22:44 +0000
      Re: Where did the 3 geometric dimensions come from? noTthaTguY <abu.kuanysh05@gmail.com> - 2016-06-25 16:10 -0700
      Re: Where did the 3 geometric dimensions come from? ClutterFreak <ClutterFreak@FakeAddress.com> - 2016-06-25 18:25 -0500
        Re: Where did the 3 geometric dimensions come from? Sergio <invalid@invalid.com> - 2016-06-25 21:08 -0500
          Re: Where did the 3 geometric dimensions come from? ClutterFreak <ClutterFreak@FakeAddress.com> - 2016-06-25 21:58 -0500
          TripolarS from ... wTf are you from, any way noTthaTguY <abu.kuanysh05@gmail.com> - 2016-06-26 16:53 -0700
            Re: TripolarS from ... wTf are you from, any way noTthaTguY <abu.kuanysh05@gmail.com> - 2016-06-26 21:10 -0700
        Re: Where did the 3 geometric dimensions come from? jimp@specsol.spam.sux.com - 2016-06-26 02:04 +0000
          Re: Where did the 3 geometric dimensions come from? ClutterFreak <ClutterFreak@FakeAddress.com> - 2016-06-25 22:28 -0500
            Re: Where did the 3 geometric dimensions come from? jimp@specsol.spam.sux.com - 2016-06-26 04:49 +0000
              Re: Where did the 3 geometric dimensions come from? ClutterFreak <ClutterFreak@FakeAddress.com> - 2016-06-26 11:23 -0500
                Re: Where did the 3 geometric dimensions come from? jimp@specsol.spam.sux.com - 2016-06-26 17:33 +0000
                Re: Where did the 3 geometric dimensions come from? ClutterFreak <ClutterFreak@FakeAddress.com> - 2016-06-26 13:13 -0500

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