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'how do they do that' and possible job in tow

I wonder if anyone can help.

I would like to know how certain sites:
http://aboutbritain.com/ArundelCastle.htm, and
http://travel.knowhere.co.uk/place/+bristol-0/ manage to put approx mile
distances between their listed towns and attractions.
You will see it on the knowhere.co.uk site on the right side where they list
nearby towns and on aboutbritain.com you will see it where they list other
nearby attractions and hotels towards the bottom of the page.
I guess they store longitude/latitude in their database so they can pinpoint
each attraction/hotel ETC, but what then. How do they calculate distances
between those hotels and attractions and other towns?

Also, the database on my site has alot of places stored but with postcodes.
Is there a way of converting postcodes into approximate long/lat positions?
Like a universally available table or something?

My programmer is back tomorrow from his holidays and I'm trying to gather as
much information about 'how it's done' so I can get a similiar system
implemented on my website. My new website will be describing thousands of
British villages and storing them in a mySQL database and I'm looking at
ways of listing the nearest attractions to them. The site uses alot of php.
If my programmer does not contact me on his return (he often obsconds for
lengthy periods) I will be looking for someone who can do this sort of work
and other work. Must be reasonable! and reliable!

If anyone can help I'd be most grateful.

Kind Regards,
Jayne Wolps

Jul 17 '05 #1
0 1348

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