Re: How to calculate length of path data without diagonals? - Mailing list pgsql-general

From Jasen Betts
Subject Re: How to calculate length of path data without diagonals?
Date
Msg-id if136s$sag$3@reversiblemaps.ath.cx
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In response to How to calculate length of path data without diagonals?  (Romain Billoir <billoirr@gmail.com>)
List pgsql-general
On 2010-12-23, Romain Billoir <billoirr@gmail.com> wrote:
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> Hi, i need to calculate some length of path without diagonal. Some examples:
> length((5,5),(6,6))) returns 1.41. I need 2: 5,5 to 5,6 + 5,6 to 6,6.
>
> Is that possible?

It's called "Manhattan distance" look it up, the arithmentic is easy.

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