# Re: Querying distances between two coordinates

From: Mladen Gogala <no_at_email.here.invalid>

Date: Fri, 10 Jun 2011 22:00:46 +0000 (UTC)

Message-ID: <pan.2011.06.10.22.00.46_at_email.here.invalid>

On Fri, 10 Jun 2011 11:09:40 -0700, Charles Hooper wrote:

Date: Fri, 10 Jun 2011 22:00:46 +0000 (UTC)

Message-ID: <pan.2011.06.10.22.00.46_at_email.here.invalid>

On Fri, 10 Jun 2011 11:09:40 -0700, Charles Hooper wrote:

*> I vaguely remember teaching a class how to do this calculation of*

*> distance around a spherical object in the early 1990s (with only a*

*> calculator) - I could probably search and find the lesson plan which is*

*> probably right next to the proof that 1=2. While I am searching for*

*> that lesson plan, see if the following article is helpful:*

*> http://www.movable-type.co.uk/scripts/latlong.html*

The easiest way is to assume that the Earth is flat. In that case, you have Pythagorean theorem and linear algebra. If anyone tries to contradict, they should expect the Spanish inquisition. I know that nobody expects Spanish inquisition whose primary weapons are....

-- http://mgogala.byethost5.comReceived on Fri Jun 10 2011 - 17:00:46 CDT