[postgis-devel] Implement New Geometry Index Method?

Jeremy Palmer JPalmer at linz.govt.nz
Wed May 21 02:23:02 PDT 2014


> I agree it would be good to havea "gridding" function in PostGIS, but I don't really see it as being part of "indexing".
> Gridding produces better indexes but also augment the number of  records so it takes some user design to decide how to layout the data.

Could the user design parameters not be part of the index creation storage parameters?

> One thing to keep in mind is that splitting on a regular grid would necessarely introduce new vertices which in turn
> would slighly move the original edges and possibly introduce collapses/invalidities.

Yes I did think that this might occur, especially considering I'm using decimal degree coordinates. So far with my process I've been lucky not to run into this :)



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