
cts:box-south( $box as cts:box ) as xs:numeric
Returns a box's southern boundary.
| Parameters | |
|---|---|
| box | The box. | 
xs:float or
 xs:double type, depending on the precision of the governing
 coordinate system.
cts:box-south(cts:box(45, -122, 78, 30)) => 45
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