Re: [postgis-users] ST_Buffer internals
It's just a series of points which you can position in a curve. The more points, the smoother the curve. charles On Mar 14, 2012, at 5:24 AM, Ed Linde wrote: > Is a LINESTRING always a straight line in postgis? Or can there be a > curvature? I didn't get that from the documentation. ___ postgis-users mailing list postgis-users@postgis.refractions.net http://postgis.refractions.net/mailman/listinfo/postgis-users
Re: [postgis-users] ST_Buffer internals
Is a LINESTRING always a straight line in postgis? Or can there be a curvature? I didn't get that from the documentation. On Wed, Mar 14, 2012 at 10:04 AM, Ed Linde wrote: > Hi All, > I am wondering how ST_Buffer computes a buffer around say a LINESTRING? > How can I look at the internals of this? > Is it possible to achieve the same effect using GDAL's C++ API? I ask > because I have a very large LIDAR 3-D data set > which I cannot load into Postgis, but I would certainly want to understand > how postgis achieves some of it's > functionality, to get some ideas. Would love to hear some explanations or > ideas about how to do this! > > Cheers, > Ed > ___ postgis-users mailing list postgis-users@postgis.refractions.net http://postgis.refractions.net/mailman/listinfo/postgis-users
[postgis-users] ST_Buffer internals
Hi All, I am wondering how ST_Buffer computes a buffer around say a LINESTRING? How can I look at the internals of this? Is it possible to achieve the same effect using GDAL's C++ API? I ask because I have a very large LIDAR 3-D data set which I cannot load into Postgis, but I would certainly want to understand how postgis achieves some of it's functionality, to get some ideas. Would love to hear some explanations or ideas about how to do this! Cheers, Ed ___ postgis-users mailing list postgis-users@postgis.refractions.net http://postgis.refractions.net/mailman/listinfo/postgis-users
