| namespace | http://www.opengis.net/swe/2.0 | ||||||
| type | restriction of string | ||||||
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| source | <simpleType name="UomSymbol"> <annotation> <documentation>This type specifies a character string of length at least one, and restricted such that it must not contain any of the following characters: ":" (colon), " " (space), (newline), (carriage return), (tab). This allows values corresponding to familiar abbreviations, such as "kg", "m/s", etc. It is also required that the symbol be an identifier for a unit of measure as specified in the "Unified Code of Units of Measure" (UCUM) (http://aurora.regenstrief.org/UCUM). This provides a set of symbols and a grammar for constructing identifiers for units of measure that are unique, and may be easily entered with a keyboard supporting the limited character set known as 7-bit ASCII. ISO 2955 formerly provided a specification with this scope, but was withdrawn in 2001. UCUM largely follows ISO 2955 with modifications to remove ambiguities and other problems.</documentation> </annotation> <restriction base="string"> <pattern value="[^: \n\r\t]+"/> </restriction> </simpleType> |