<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:doc="eml://ecoinformatics.org/documentation-2.1.1" xmlns:unit="eml://ecoinformatics.org/units-2.1.1" targetNamespace="eml://ecoinformatics.org/units-2.1.1">
<xs:import namespace="eml://ecoinformatics.org/documentation-2.1.1" schemaLocation="eml-documentation.xsd"/>
<xs:annotation>
<xs:documentation>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
</xs:documentation>
<xs:appinfo>
<doc:moduleDocs>
<doc:moduleName>eml-unitTypeDefinitions</doc:moduleName>
<doc:moduleDescription>
<section xmlns="">
<title>EML Unit Type Definitions</title>
<section>
<title>Philosophy of Units</title>
<para>The concept of "unit" represents one of the most fundamental
categories of metadata. The classic example of data entropy is the
case in which a reported numeric value loses meaning due to lack of
associated units. Much of Ecology is driven by measurement, and
most measurements are inherently comparative. Good data description
requires a representation of the basis for comparison, i.e., the
unit. In modeling units, the authors of EML drew
inspiration from the
<ulink url="http://physics.nist.gov/cuu/Units/introduction.html">
NIST Reference on Constants, Units, and Uncertainty</ulink>.
This document defines a unit as "a particular physical quantity,
defined and adopted by convention, with which other particular
quantities of the same kind are compared to express their value."
The authors of the EML 2 specification (hereafter "the authors")
decided to make the unit element required, wherever
possible.</para>
<para>The units are defined in the
<ulink url="http://www.ch.ic.ac.uk/rzepa/codata2/">STMML language</ulink>
in a document that is shipped with each release of
EML. See the accompanying STMML file, eml-unitDictionary.xml, for
precise, quantitative definitions of each of these units and their
relationships to base SI units</para>
<para>which modules use these types (and which could but dont yet?)</para>
<para>anything else?</para>
</section>
</section>
</doc:moduleDescription>
<doc:recommendedUsage>any module that needs units</doc:recommendedUsage>
<doc:standAlone>no</doc:standAlone>
</doc:moduleDocs>
</xs:appinfo>
</xs:annotation>
<!--
the dictionary of all the units -->
<xs:simpleType name="StandardUnitDictionary">
<xs:annotation>
<xs:appinfo>
<doc:tooltip>Standard Units</doc:tooltip>
<doc:summary>The enumerated list of standard units, mainly S unitsI</doc:summary>
<doc:description>
<para>The unitDictionary is the standard set
of units included with the EML distribution, mainly from the
SI standard. These unit names should be used in the standardUnit field to
describe an attribute. See the accompanying STMML file, eml-unitDictionary.xml, for
precise, quantitative definitions of each of these units and their
relationships to base SI units.</para>
<para>The standard Unit Dictionary is built from a union of simpleTypes.
This construct allows unit types to be used individually as appropriate
in EML content (e.g., LengthUnitType for distances )</para>
</doc:description>
</xs:appinfo>
</xs:annotation>
<xs:union memberTypes="unit:LengthUnitType unit:MassUnitType unit:otherUnitType"/>
</xs:simpleType>
<!--
length units -->
<xs:simpleType name="LengthUnitType">
<xs:annotation>
<xs:appinfo>
<doc:tooltip>Length Units</doc:tooltip>
<doc:summary>The list of units which are of length type, or have a parentSI of meter
SI</doc:summary>
<doc:description>
<para>The LengthUnitType is the enumerated list of units which are of length type, or have a parentSI of meter.
These unit names can be used where ever content should be restricted to a length, such as a distance or
altitude. The units are defined in the STMML
language in a document that is shipped with each release of
EML called eml-unitDictionary.xml. See this file for
precise, quantitative definitions of each of these units and their
relationships to base SI units.</para>
</doc:description>
</xs:appinfo>
</xs:annotation>
<xs:restriction base="xs:string">
<xs:enumeration value="meter"/>
<xs:enumeration value="nanometer"/>
<xs:enumeration value="micrometer"/>
<xs:enumeration value="micron"/>
<xs:enumeration value="millimeter"/>
<xs:enumeration value="centimeter"/>
<xs:enumeration value="decimeter"/>
<xs:enumeration value="dekameter"/>
<xs:enumeration value="hectometer"/>
<xs:enumeration value="kilometer"/>
<xs:enumeration value="megameter"/>
<xs:enumeration value="angstrom"/>
<xs:enumeration value="inch"/>
<xs:enumeration value="Foot_US"/>
<xs:enumeration value="foot"/>
<xs:enumeration value="Foot_Gold_Coast"/>
<xs:enumeration value="fathom"/>
<xs:enumeration value="nauticalMile"/>
<xs:enumeration value="yard"/>
<xs:enumeration value="Yard_Indian"/>
<xs:enumeration value="Link_Clarke"/>
<xs:enumeration value="Yard_Sears"/>
<xs:enumeration value="mile"/>
</xs:restriction>
</xs:simpleType>
<!--
mass units -->
<xs:simpleType name="MassUnitType">
<xs:annotation>
<xs:appinfo>
<doc:tooltip>Mass Units</doc:tooltip>
<doc:summary>The list of units which are of mass type, or have a parentSI of kilogram
</doc:summary>
<doc:description>
<para>The MassUnitType is the enumerated list of units which are of mass type, or have a parentSI of kilogram.
These unit names can be used where ever content should be restricted to a mass, such as an amount.
The units are defined in the STMML
language in a document that is shipped with each release of
EML called eml-unitDictionary.xml. See this file for
precise, quantitative definitions of each of these units and their
relationships to base SI units.</para>
</doc:description>
</xs:appinfo>
</xs:annotation>
<xs:restriction base="xs:string">
<xs:enumeration value="kilogram"/>
<xs:enumeration value="nanogram"/>
<xs:enumeration value="microgram"/>
<xs:enumeration value="milligram"/>
<xs:enumeration value="centigram"/>
<xs:enumeration value="decigram"/>
<xs:enumeration value="gram"/>
<xs:enumeration value="dekagram"/>
<xs:enumeration value="hectogram"/>
<xs:enumeration value="megagram"/>
<xs:enumeration value="tonne"/>
<xs:enumeration value="pound"/>
<xs:enumeration value="ton"/>
</xs:restriction>
</xs:simpleType>
<!--
the other units, not previously described -->
<xs:simpleType name="otherUnitType">
<xs:annotation>
<xs:appinfo>
<doc:tooltip>Other Standard Units</doc:tooltip>
<doc:summary>The enumerated list of standard units that are not
included in the any other named simpleType</doc:summary>
<doc:description>
<para>The unitDictionary is the standard set
of units included with the EML distribution, mainly from the
SI standard. These unit names can be used in the standardUnit field to
describe an attribute. The units are defined in the STMML
language in a document that is shipped with each release of
EML. See the accompanying STMML file eml-unitDictionary.xml for
precise, quantitative definitions of each of these units and their
relationships to base SI units.</para>
<para>The standard Unit Dictionary is built from a union of simpleTypes. This Type
enumerates the units which are not in other Type definitions, but are to be
included as standard.</para>
</doc:description>
</xs:appinfo>
</xs:annotation>
<xs:restriction base="xs:string">
<xs:enumeration value="dimensionless"/>
<xs:enumeration value="second"/>
<xs:enumeration value="kelvin"/>
<xs:enumeration value="coulomb"/>
<xs:enumeration value="ampere"/>
<xs:enumeration value="mole"/>
<xs:enumeration value="candela"/>
<xs:enumeration value="number"/>
<xs:enumeration value="radian"/>
<xs:enumeration value="degree"/>
<xs:enumeration value="grad"/>
<xs:enumeration value="cubicMeter"/>
<xs:enumeration value="nominalMinute"/>
<xs:enumeration value="nominalHour"/>
<xs:enumeration value="nominalDay"/>
<xs:enumeration value="nominalWeek"/>
<xs:enumeration value="nominalYear"/>
<xs:enumeration value="nominalLeapYear"/>
<xs:enumeration value="celsius"/>
<xs:enumeration value="fahrenheit"/>
<xs:enumeration value="nanosecond"/>
<xs:enumeration value="microsecond"/>
<xs:enumeration value="millisecond"/>
<xs:enumeration value="centisecond"/>
<xs:enumeration value="decisecond"/>
<xs:enumeration value="dekasecond"/>
<xs:enumeration value="hectosecond"/>
<xs:enumeration value="kilosecond"/>
<xs:enumeration value="megasecond"/>
<xs:enumeration value="minute"/>
<xs:enumeration value="hour"/>
<xs:enumeration value="kiloliter"/>
<xs:enumeration value="microliter"/>
<xs:enumeration value="milliliter"/>
<xs:enumeration value="liter"/>
<xs:enumeration value="gallon"/>
<xs:enumeration value="quart"/>
<xs:enumeration value="bushel"/>
<xs:enumeration value="cubicInch"/>
<xs:enumeration value="pint"/>
<xs:enumeration value="megahertz"/>
<xs:enumeration value="kilohertz"/>
<xs:enumeration value="hertz"/>
<xs:enumeration value="millihertz"/>
<xs:enumeration value="newton"/>
<xs:enumeration value="joule"/>
<xs:enumeration value="calorie"/>
<xs:enumeration value="britishThermalUnit"/>
<xs:enumeration value="footPound"/>
<xs:enumeration value="lumen"/>
<xs:enumeration value="lux"/>
<xs:enumeration value="becquerel"/>
<xs:enumeration value="gray"/>
<xs:enumeration value="sievert"/>
<xs:enumeration value="katal"/>
<xs:enumeration value="henry"/>
<xs:enumeration value="megawatt"/>
<xs:enumeration value="kilowatt"/>
<xs:enumeration value="watt"/>
<xs:enumeration value="milliwatt"/>
<xs:enumeration value="megavolt"/>
<xs:enumeration value="kilovolt"/>
<xs:enumeration value="volt"/>
<xs:enumeration value="millivolt"/>
<xs:enumeration value="farad"/>
<xs:enumeration value="ohm"/>
<xs:enumeration value="ohmMeter"/>
<xs:enumeration value="siemen"/>
<xs:enumeration value="weber"/>
<xs:enumeration value="tesla"/>
<xs:enumeration value="pascal"/>
<xs:enumeration value="megapascal"/>
<xs:enumeration value="kilopascal"/>
<xs:enumeration value="atmosphere"/>
<xs:enumeration value="bar"/>
<xs:enumeration value="millibar"/>
<xs:enumeration value="kilogramsPerSquareMeter"/>
<xs:enumeration value="gramsPerSquareMeter"/>
<xs:enumeration value="milligramsPerSquareMeter"/>
<xs:enumeration value="kilogramsPerHectare"/>
<xs:enumeration value="tonnePerHectare"/>
<xs:enumeration value="poundsPerSquareInch"/>
<xs:enumeration value="kilogramPerCubicMeter"/>
<xs:enumeration value="milliGramsPerMilliLiter"/>
<xs:enumeration value="gramsPerLiter"/>
<xs:enumeration value="milligramsPerCubicMeter"/>
<xs:enumeration value="microgramsPerLiter"/>
<xs:enumeration value="milligramsPerLiter"/>
<xs:enumeration value="gramsPerCubicCentimeter"/>
<xs:enumeration value="gramsPerMilliliter"/>
<xs:enumeration value="gramsPerLiterPerDay"/>
<xs:enumeration value="litersPerSecond"/>
<xs:enumeration value="cubicMetersPerSecond"/>
<xs:enumeration value="cubicFeetPerSecond"/>
<xs:enumeration value="squareMeter"/>
<xs:enumeration value="are"/>
<xs:enumeration value="hectare"/>
<xs:enumeration value="squareKilometers"/>
<xs:enumeration value="squareMillimeters"/>
<xs:enumeration value="squareCentimeters"/>
<xs:enumeration value="acre"/>
<xs:enumeration value="squareFoot"/>
<xs:enumeration value="squareYard"/>
<xs:enumeration value="squareMile"/>
<xs:enumeration value="litersPerSquareMeter"/>
<xs:enumeration value="bushelsPerAcre"/>
<xs:enumeration value="litersPerHectare"/>
<xs:enumeration value="squareMeterPerKilogram"/>
<xs:enumeration value="metersPerSecond"/>
<xs:enumeration value="metersPerDay"/>
<xs:enumeration value="feetPerDay"/>
<xs:enumeration value="feetPerSecond"/>
<xs:enumeration value="feetPerHour"/>
<xs:enumeration value="yardsPerSecond"/>
<xs:enumeration value="milesPerHour"/>
<xs:enumeration value="milesPerSecond"/>
<xs:enumeration value="milesPerMinute"/>
<xs:enumeration value="centimetersPerSecond"/>
<xs:enumeration value="millimetersPerSecond"/>
<xs:enumeration value="centimeterPerYear"/>
<xs:enumeration value="knots"/>
<xs:enumeration value="kilometersPerHour"/>
<xs:enumeration value="metersPerSecondSquared"/>
<xs:enumeration value="waveNumber"/>
<xs:enumeration value="cubicMeterPerKilogram"/>
<xs:enumeration value="cubicMicrometersPerGram"/>
<xs:enumeration value="amperePerSquareMeter"/>
<xs:enumeration value="amperePerMeter"/>
<xs:enumeration value="molePerCubicMeter"/>
<xs:enumeration value="molarity"/>
<xs:enumeration value="molality"/>
<xs:enumeration value="candelaPerSquareMeter"/>
<xs:enumeration value="metersSquaredPerSecond"/>
<xs:enumeration value="metersSquaredPerDay"/>
<xs:enumeration value="feetSquaredPerDay"/>
<xs:enumeration value="kilogramsPerMeterSquaredPerSecond"/>
<xs:enumeration value="gramsPerCentimeterSquaredPerSecond"/>
<xs:enumeration value="gramsPerMeterSquaredPerYear"/>
<xs:enumeration value="gramsPerHectarePerDay"/>
<xs:enumeration value="kilogramsPerHectarePerYear"/>
<xs:enumeration value="kilogramsPerMeterSquaredPerYear"/>
<xs:enumeration value="molesPerKilogram"/>
<xs:enumeration value="molesPerGram"/>
<xs:enumeration value="millimolesPerGram"/>
<xs:enumeration value="molesPerKilogramPerSecond"/>
<xs:enumeration value="nanomolesPerGramPerSecond"/>
<xs:enumeration value="kilogramsPerSecond"/>
<xs:enumeration value="tonnesPerYear"/>
<xs:enumeration value="gramsPerYear"/>
<xs:enumeration value="numberPerMeterSquared"/>
<xs:enumeration value="numberPerKilometerSquared"/>
<xs:enumeration value="numberPerMeterCubed"/>
<xs:enumeration value="numberPerLiter"/>
<xs:enumeration value="numberPerMilliliter"/>
<xs:enumeration value="metersPerGram"/>
<xs:enumeration value="numberPerGram"/>
<xs:enumeration value="gramsPerGram"/>
<xs:enumeration value="microgramsPerGram"/>
<xs:enumeration value="cubicCentimetersPerCubicCentimeters"/>
<!-- removed the mass units to their named type -->
<!-- removed the length units to their named type -->
<!-- removed the angle units to their named type -->
</xs:restriction>
</xs:simpleType>
<!--
angle units -->
<xs:simpleType name="angleUnitType">
<xs:annotation>
<xs:appinfo>
<doc:tooltip>Angle Units</doc:tooltip>
<doc:summary>An example of a group of units which could be added. These units are a
derived typein the group of derived SI units with a special name or symbol.</doc:summary>
<doc:description>
<para>The AngleUnitType is the enumerated list of angle units. For example,
plane angle (radian, rad) and solid angle (steradian, sr) are actually
dimensionless, and their symbols used as appropriate
(e.g, sr in photometry). These unit names could be used where
ever content should be restricted.</para>
</doc:description>
</xs:appinfo>
</xs:annotation>
<xs:restriction base="xs:string">
<xs:enumeration value="radian"/>
<xs:enumeration value="degree"/>
<xs:enumeration value="grad"/>
<!-- <xs:enumeration value="steradian"/> -->
</xs:restriction>
</xs:simpleType>
</xs:schema>