Re: [postgis-users] Tutorial: Bezier Curves - A More Flexible Alternative to Great Circles

2015-03-05 Thread Rémi Cura
Hey, nice work ! I'm adding this to my personnal toolbox . I'm a little curious because I know you are a R user, why didn't you use R package to compute bezize, there are several? Is this a portability issue? For the interpolation, this can be substantially more difficult if you allow outliers,

Re: [postgis-users] ST_Intersection very slow

2015-03-05 Thread Rémi Cura
This would be awesome I'm keen to experiment with the dumped points, using my recursive quadgrid function, so the vector grids subdivide to a maximum depth or number of points per cell. So this will be applied at the point level to give an optimized number of grid cells. If I understand you

Re: [postgis-users] ST_Intersection very slow

2015-03-05 Thread Mark Wynter
Yes Remi - you have understood correctly how the quadgrid function works - I will have a play with the quadgrid tomorrow, then let's share notes. If I understand you correctly, you would subdivide like you do currently, but the depth of subdivision would be a function of number of points