[postgis-users] line direction

[Nicolas Ribot]

Hi,

If you want to materialize direction from start to end of line, you can use
st_startPoint and st_endpoint to determines the right ends.
What is your use case ?

Nicolas

On 14 May 2013 13:49, franco base <frenk.calza at gmail.com> wrote:

> Hi.
> I know tgis function but doesn't work.
> Myabe my question isn't correct.
> I'd have a binary value according to the arc direction.
> For example, in qgis I can view this information:
> I can see an arrow on my arc according to direction.
> I'd have the same using postgis.
>
> Thanks
>
>
>
> 2013/5/14 Paolo Corti <pcorti at gmail.com>
>
>> On Tue, May 14, 2013 at 6:03 PM, franco base <frenk.calza at gmail.com>
>> wrote:
>> > Hi.
>> > I have a question for the list.
>> >
>> > Is there a postgis function to have line direction?
>> >
>>
>> http://postgis.refractions.net/docs/ST_Azimuth.html
>>
>> regards
>> p
>>
>> --
>> Paolo Corti
>> Geospatial software developer
>> web: http://www.paolocorti.net
>> twitter: @capooti
>> skype: capooti
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>
>
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