Changelog

v1.2.1

ToPoint function uses ST_Centroid for polygons with less than 5 nodes.
Package is now published to @mapbox/postgis-vt-util

v1.1.0

New function Sieve which filters inner and outer rings from a multipolygon based on a minimum area threshold.
Z function converted to SQL from PL/PGSQL.
ZRes function converted to SQL from PL/PGSQL and overloaded to accept both floats and integers.

v1.0.0

This version brings lots of code cleanup and reorganization, with many backwards-incompatible changes.

lib.sql has been renamed to the more specific postgis-vt-util.sql
Underscores have been removed from function names, following PostGIS' convention
- clean_int -> CleanInt
- clean_numeric -> CleanNumeric
- tile_bbox -> TileBBox
- merc_buffer -> MercBuffer
- merc_dwithin -> MercDWithin
- merc_length -> MercLength
- We've also moved to CamelCase for all other functions, but PostgreSQL is not case-sensitive in this regard so it's purely stylistic.
LabelGrid no longer takes a pixel size parameter. You should now pre- multiply this into the grid size before calling the function.
TileBBox now takes an optional SRID parameter to reproject the output.
Several new functions have been added. See the README for descriptions.
- Bounds
- LargestPart
- MakeArc
- OrientedEnvelope
- SmartShrink

v0.3.0

New function: tile_bbox

v0.2.0

New function: clean_numeric

v0.1.0

Initial release with 9 functions:
- clean_int
- labelgrid
- linelabel
- merc_buffer
- merc_dwithin
- merc_length
- topoint
- z
- zres