# VagueGeometry

The VagueGeometry is a PostgreSQL extension to manage vague spatial objects based on the *Vague Spatial Algebra* (VASA).

To cite VagueGeometry:

[Carniel, A. C.; Ciferri, R. R.; Ciferri, C. D. A. The VagueGeometry Abstract Data Type. Journal of Information and Data Management, vol. 7, n. 1, p. 18-34, 2016.](https://www.researchgate.net/publication/310292964_The_VagueGeometry_Abstract_Data_Type)

The paper that describes VASA is:

[Pauly, A. and Schneider M. VASA: An algebra for vague spatial data in databases. Information Systems, vol. 35, n. 1, p. 111-138, 2010.](https://www.sciencedirect.com/science/article/pii/S0306437909000519)


VagueGeometry is completely developed and maintained by Anderson Chaves Carniel.

Complete documentation at http://gbd.dc.ufscar.br/vaguegeometry/ and https://github.com/accarniel/VagueGeometry/wiki