Re: Angle

> Ezequias Rodrigues da Rocha escreveu:
>> marco vieira escreveu:
>>> Ezequias:
>>>  Look at postgis documentation. azimuth() returns radians, not
>>> degrees. You must divide by pi rad and multiply by 180 degrees to
>>> obtain 124,9 degrees. Make sure your azimuth is 143,9 by manual
>>> calculation using start and end points (make sure you are using the
>>> same start and end points).
>>> Regards.
>>> --
>>> Marco Vieira
>>> +55 21 9499-6800
>>> e-mail: maovieira@... <mailto:maovieira@...>  
>> Marco,
>>
>> I did the following:
>>
>> DesiredDegree = 180 - ColumnInRad /PI * 1 rad
>>
>> Whre 1 rad = 57.29577951
>>
>>
>> Some features works someothers dont.
>> :-) :-(
>>
>> Regards
>> Ezequias
>> _______________________________________________
>> postgis-users mailing list
>> postgis-users@...
>> http://postgis.refractions.net/mailman/listinfo/postgis-users
> Ezequias,
>
> You should have done like Marco said:
>
> DesiredDegree = ColumnInRad/pi( )*180
>
> Remember, this result is the azimuth (angle from the north, i.e., from
> the y axis, clockwise).
>
> Hope this helps,
> Eduardo
> _______________________________________________
> postgis-users mailing list
> postgis-users@...
> http://postgis.refractions.net/mailman/listinfo/postgis-users
>