[pgrouting-users] Find vertices away from a specified distance

[Raghavan Krishnasamylakshmanaperumal]

Hi All,

I am experimenting with Chicago runner's GPS traces(collected from
Runkeeper.com). I like to know if the following problem can be solved using
pgRouting.

I have created a graph using pgr_nodeNetwork and pgr_createTopology. Given
a longitude, latitude point I know to find the vertices closer to that but
I want to know if given a longitude, latitude point can I find the vertices
away  from a specified distance. Distance here means the lineStrings length
in meters.

For example I have a longitude/latitude and want to know all the vertices
500meters away from the given longitude/latitude point. Are there functions
available in pgRouting to infer such vertices?

-- 
Thanks and Regards,
Raghavan KL
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/pgrouting-users/attachments/20140422/6da718c0/attachment.html>