6.5. `sellipse` functions
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## 6.5. `sellipse` functions #

pgSphere provides 4 functions to get the parameters of a spherical ellipse:

Table 6.2. Getting spherical ellipse attributes

function | description
--- | ---
`lrad` | the major radius of the ellipse
`srad` | the minor radius of the ellipse
`center` | the center of the ellipse
`inc` | the inclination of the ellipse

To get the ellipse center, you can use the operator `@@` (Section 5.7) instead of using the function `center(sellipse)`.

Example 6.10. Get the minor radius of an ellipse

    sql> SELECT srad ( sellipse '< { 10d, 5d }, ( 20d, 0d ), 90d >' )
            * 180.0/ pi() AS srad ;
     srad
    ------
      5
    (1 row)

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