4.3. Circle
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## 4.3. Circle #

The function

`scircle(` | center, |
| radius`)`; |

`spoint center`;
`float8 radius`;

returns a spherical circle with center at `center` and a radius `radius` in radians. The circle radius has to be larger than or equal to zero but less or equal to 90°. Otherwise, this function returns an error.

Example 4.3. A circle around the north pole

Get a spherical circle around the North Pole with a radius of 30°.

    sql> SELECT set_sphere_output('DEG');
     set_sphere_output
    -------------------
     SET DEG
    (1 row)

    sql> SELECT scircle ( spoint '(0d,90d)', 30.0*pi()/180.0 );
          scircle
    --------------------
     <(0d , 90d) , 30d>
    (1 row)

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