<?xml version="1.0"?>
<xsd:schema targetNamespace="http://www.garmin.com/xmlschemas/TrackPointExtension/v1"
  elementFormDefault="qualified"
  xmlns="http://www.garmin.com/xmlschemas/TrackPointExtension/v1"
  xmlns:xsd="http://www.w3.org/2001/XMLSchema">

  <xsd:annotation><xsd:documentation>
  This schema defines Garmin extensions to be used with the GPX 1.1 schema.
  The root element defined by this schema is intended to be used as a child
  element of the "extensions" elements in the trkpt element in the GPX 1.1 schema. 
  The GPX 1.1 schema is available at http://www.topografix.com/GPX/1/1/gpx.xsd.
  This is a replacement for TrackPointExtension in 
  http://www.garmin.com/xmlschemas/GpxExtensions/v3
  </xsd:documentation></xsd:annotation>

  <xsd:element name="TrackPointExtension" type="TrackPointExtension_t" />

  <xsd:complexType name="TrackPointExtension_t">
    <xsd:annotation><xsd:documentation>
    This type contains data fields that cannot
    be represented in track points in GPX 1.1 instances.
    </xsd:documentation></xsd:annotation>
    <xsd:sequence>
      <xsd:element name="atemp" type="DegreesCelsius_t" minOccurs="0" />
      <xsd:element name="wtemp" type="DegreesCelsius_t" minOccurs="0" />
      <xsd:element name="depth" type="Meters_t" minOccurs="0" />
      <xsd:element name="hr" type="BeatsPerMinute_t" minOccurs="0"/>
      <xsd:element name="cad" type="RevolutionsPerMinute_t" minOccurs="0"/>
      <xsd:element name="Extensions" type="Extensions_t" minOccurs="0"/>
    </xsd:sequence>
  </xsd:complexType>

  <xsd:simpleType name="DegreesCelsius_t">
    <xsd:annotation><xsd:documentation>
    This type contains a temperature value measured in degrees Celsius.
    </xsd:documentation></xsd:annotation>
    <xsd:restriction base="xsd:double"/>
  </xsd:simpleType>

  <xsd:simpleType name="Meters_t">
    <xsd:annotation><xsd:documentation>
    This type contains a distance value measured in meters.
    </xsd:documentation></xsd:annotation>
    <xsd:restriction base="xsd:double"/>
  </xsd:simpleType>

  <xsd:simpleType name="BeatsPerMinute_t">
    <xsd:annotation><xsd:documentation>
    This type contains a heart rate measured in beats per minute.
    </xsd:documentation></xsd:annotation>
    <xsd:restriction base="xsd:unsignedByte">
      <xsd:minInclusive value="1"/>
    </xsd:restriction>
  </xsd:simpleType>

  <xsd:simpleType name="RevolutionsPerMinute_t">
    <xsd:annotation><xsd:documentation>
    This type contains a cadence measured in revolutions per minute.
    </xsd:documentation></xsd:annotation>
    <xsd:restriction base="xsd:unsignedByte">
	<xsd:maxInclusive value="254"/>
    </xsd:restriction>
  </xsd:simpleType>

  <xsd:complexType name="Extensions_t">
    <xsd:annotation>
    <xsd:documentation>This type provides the ability to extend any data type that includes it.</xsd:documentation>
    </xsd:annotation>
    <xsd:sequence>
    <xsd:any namespace="##other" processContents="lax" minOccurs="0" maxOccurs="unbounded"/>
    </xsd:sequence>
  </xsd:complexType>

</xsd:schema>
