cvs commit: ports/astro/xearth/files freebsd.committers.markers

Greg 'groggy' Lehey grog at FreeBSD.org
Tue Sep 27 16:51:30 PDT 2005


On Monday, 26 September 2005 at 21:36:33 +0200, Alexander Leidinger wrote:
> On Mon, 26 Sep 2005 10:03:08 +0930
> "Greg 'groggy' Lehey" <grog at FreeBSD.org> wrote:
>
>> On Sunday, 25 September 2005 at 20:27:01 -0400, Kris Kennaway wrote:
>>> On Sun, Sep 25, 2005 at 11:39:45PM +0000, Greg Lehey wrote:
>>>> grog        2005-09-25 23:39:45 UTC
>
>>>>   Log:
>>>>   Specify location accurately enough for Google Maps.
>>>>
>>>>   This appears to require 5 digits after the decimal point.
>>>>   Specifying 6 would pinpoint the location to about 11 cm in a
>>>>   north/south direction and about 8 in east/wast, which is too
>>>>   specific for moving beings.
>>>
>>> What about beings who rarely move from behind their monitor, like
>>> many hackers? :)
>>
>> I had thought of that.  But we're talking about distances shorter than
>> the height of a keyboard here.  You'd have to be completely paralyzed
>> and communicate with the outside world via a touch pad.
>
> The *height* of your keyboard is 8cm or more?

I didn't mention the height.  But for reference, at the back it's
about 6.5 cm.

> Are we talking about the same direction in the 3D space?

No, of course not.  We're talking maps, which use two-dimensional
coordinates, so the height doesn't enter into it.  FWIW, my keyboard
in north-south direction is 51 cm or 0.0000046° wide, and in east-west
direction it's 0.000002° deep.

It's interesting to note that phk has specified a location to 7 places
of decimals in north-south direction.  That's a resolution of a little
over a centimetre.

> I'm talking about the negative direction the gravity force typically
> has here on earth.

This is irrelevant in the current situation.

Greg
--
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