[pgrouting-users] question : Shortest Path Shooting star using python

[Daniel Kastl]

>
>
>
> Taking the third element of each line (that is '0.00087415387662070204'
> for the first line) as what I think as 'road length',
> I got total value of  0.0447577289587.
>
> If '0.0447577289587' the total length of route, what is it's 'Unit of
> measure' ?


The unit is the unit of your projection. It's probably degree in your case.



> How to got value in 'Kilometers/meters' ?
>

You can transform your projection for example to some meter projection like
"World Mercator" (ie. EPSG:3785).
Then length(geometry) will be in meter.

Like "SELECT length(ST_transform(<geometry column>,3785)) AS meter FROM
<table>".

Daniel



>
> Note : When I try to count the route using same start Lat/Lon and end
> lat/lon, google map said it was about 2.1 km
>
> Sincerely
> -bino-
>
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-- 
Georepublic UG & Georepublic Japan
eMail: daniel.kastl at georepublic.de
Web: http://georepublic.de
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