<?xml version="1.0" encoding="UTF-8"?>
<!-- 
     Electron Microscopy Data Bank

     XML Schema for FSC  version: 1.2

     Revision history:
     2013-04-25  1.2
        * change xsd:decimal for xsd:float
        * change min value of y from 0 to -1
     
     Contact: <help@emdatabank.org> for questions or suggestions.
-->
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
    elementFormDefault="qualified"
    attributeFormDefault="unqualified">
  <xs:element name="fsc" type="fscType"/>
  <xs:complexType name="fscType">
    <xs:annotation>
      <xs:documentation xml:lang="en">Contains a sequence of
        coordinates. Axis names are fixed, depositor must supply the title.</xs:documentation>
    </xs:annotation>
    <xs:sequence>
      <xs:element maxOccurs="unbounded" name="coordinate" type="coordType"/>
    </xs:sequence>
    <xs:attribute fixed="Resolution (A-1)" name="xaxis" type="xs:string" use="required"/>
    <xs:attribute fixed="Correlation Coefficient" name="yaxis"
      type="xs:string" use="required"/>
    <xs:attribute name="title" type="xs:string" use="required"/>
  </xs:complexType>
  <xs:complexType name="coordType">
    <xs:sequence>
      <xs:element name="x" type="xType"/>
      <xs:element name="y" type="yType"/>
    </xs:sequence>
  </xs:complexType>
  <xs:simpleType name="xType">
    <xs:restriction base="xs:float">
      <xs:minInclusive value="0"/>
    </xs:restriction>
  </xs:simpleType>
  <xs:simpleType name="yType">
    <xs:restriction base="xs:float">
      <xs:minInclusive value="-1.0"/>
      <xs:maxInclusive value="1.0"/>
    </xs:restriction>
  </xs:simpleType>
</xs:schema>
