Re: [postgis-users] ST_Buffer questions

2010-04-15 Thread Ben Madin
-boun...@postgis.refractions.net > [mailto:postgis-users-boun...@postgis.refractions.net] On Behalf Of Ben Madin > Sent: Thursday, 1 April 2010 4:42 PM > To: PostGIS Users Discussion > Subject: Re: [postgis-users] ST_Buffer questions > > G'day Li, > > I can't help with Q2, but > &g

Re: [postgis-users] ST_Buffer questions

2010-04-14 Thread Chen, Li [Contractor]
users-boun...@postgis.refractions.net [mailto:postgis-users-boun...@postgis.refractions.net] On Behalf Of Ben Madin Sent: Thursday, 1 April 2010 4:42 PM To: PostGIS Users Discussion Subject: Re: [postgis-users] ST_Buffer questions G'day Li, I can't help with Q2, but On 01/04/2010, at 12:28 , Chen, L

Re: [postgis-users] ST_Buffer questions

2010-03-31 Thread Chen, Li [Contractor]
...@postgis.refractions.net [mailto:postgis-users-boun...@postgis.refractions.net] On Behalf Of Ben Madin Sent: Thursday, 1 April 2010 4:42 PM To: PostGIS Users Discussion Subject: Re: [postgis-users] ST_Buffer questions G'day Li, I can't help with Q2, but On 01/04/2010, at 12:28 , Chen, Li [

Re: [postgis-users] ST_Buffer questions

2010-03-31 Thread Ben Madin
G'day Li, I can't help with Q2, but On 01/04/2010, at 12:28 , Chen, Li [Contractor] wrote: > Q1. > ST_Buffer(g1, range) is able to return a geometry within the range of g1. > > So, I define two point using lon/lat (SRID=4326) and range 10km. I want to > see whether they cross each other by us

[postgis-users] ST_Buffer questions

2010-03-31 Thread Chen, Li [Contractor]
Hi Everyone, I am a newbie to this community and I would like to ask a question/s :). Q1. ST_Buffer(g1, range) is able to return a geometry within the range of g1. So, I define two point using lon/lat (SRID=4326) and range 10km. I want to see whether they cross each other by using ST_Crosses(g1,