3.1. Overview
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## 3.1. Overview #

pgSphere provides spherical data types for storing with PostgreSQL. Furthermore, there is a data type to do transformations.

Table 3.1. Data types

`SQL` type name | spherical type
--- | ---
`spoint` | point (position)
`strans` | Euler transformation
`scircle` | circle
`sline` | line
`sellipse` | ellipse
`spoly` | polygon
`spath` | path
`sbox` | coordinate range
`smoc` | HEALPix Multi-Order Coverage map

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