21.2.3.1 ST_AxisUnit

This simple type specifies that its contents contain a positive floating point number.

This simple type’s contents are a restriction of the W3C XML Schema double datatype.

This simple type also

specifies the following restrictions:

• This simple type has a minimum value of greater than 0.

[Note: The W3C XML Schema definition of this simple type’s content model (ST_AxisUnit) is located in A.5.1. end note]