How to calculate length of path data without diagonals?

On 12/23/10 10:25 AM, Romain Billoir wrote:

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?

a path of just two points? something like abs(x1-x2) + abs(y1-y2).

On 12/23/2010 1:25 PM, Romain Billoir wrote:

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?

You could write a function to get the Manhattan distance between two
points, it is the sum of the absolute values of subtracting each part of
the coordinate. e.g. ABS(x2 - x1) + ABS(y2 - y1)

-- Stephen

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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