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<title>Position QML Type | QtPositioning 5.3</title>
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<li>Qt 5.3</li>
<li><a href="qtpositioning-index.html">Qt Positioning</a></li>
<li><a href="qtpositioning-qmlmodule.html">QML Types</a></li>
<li>Position QML Type</li>
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Qt 5.3.2 Reference Documentation</li>
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<h3><a name="toc">Contents</a></h3>
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<li class="level1"><a href="#properties">Properties</a></li>
<li class="level1"><a href="#details">Detailed Description</a></li>
<li class="level2"><a href="#example-usage">Example Usage</a></li>
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<h1 class="title">Position QML Type</h1>
<span class="subtitle"></span>
<!-- $$$Position-brief -->
<p>The Position type holds positional data at a particular point in time, such as coordinate (longitude, latitude, altitude) and speed. <a href="#details">More...</a></p>
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<table class="alignedsummary">
<tr><td class="memItemLeft rightAlign topAlign"> Import Statement:</td><td class="memItemRight bottomAlign"> </b><tt>import QtPositioning 5.2</tt></td></tr><tr><td class="memItemLeft rightAlign topAlign"> Since:</td><td class="memItemRight bottomAlign"> Qt 5.2</td></tr></table><ul>
<li><a href="qml-qtpositioning-position-members.html">List of all members, including inherited members</a></li>
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<a name="properties"></a>
<h2>Properties</h2>
<ul>
<li class="fn"><b><b><a href="qml-qtpositioning-position.html#altitudeValid-prop">altitudeValid</a></b></b> : bool</li>
<li class="fn"><b><b><a href="qml-qtpositioning-position.html#coordinate-prop">coordinate</a></b></b> : coordinate</li>
<li class="fn"><b><b><a href="qml-qtpositioning-position.html#direction-prop">direction</a></b></b> : double</li>
<li class="fn"><b><b><a href="qml-qtpositioning-position.html#directionValid-prop">directionValid</a></b></b> : bool</li>
<li class="fn"><b><b><a href="qml-qtpositioning-position.html#horizontalAccuracy-prop">horizontalAccuracy</a></b></b> : real</li>
<li class="fn"><b><b><a href="qml-qtpositioning-position.html#horizontalAccuracyValid-prop">horizontalAccuracyValid</a></b></b> : bool</li>
<li class="fn"><b><b><a href="qml-qtpositioning-position.html#latitudeValid-prop">latitudeValid</a></b></b> : bool</li>
<li class="fn"><b><b><a href="qml-qtpositioning-position.html#longitudeValid-prop">longitudeValid</a></b></b> : bool</li>
<li class="fn"><b><b><a href="qml-qtpositioning-position.html#speed-prop">speed</a></b></b> : double</li>
<li class="fn"><b><b><a href="qml-qtpositioning-position.html#speedValid-prop">speedValid</a></b></b> : bool</li>
<li class="fn"><b><b><a href="qml-qtpositioning-position.html#timestamp-prop">timestamp</a></b></b> : date</li>
<li class="fn"><b><b><a href="qml-qtpositioning-position.html#verticalAccuracy-prop">verticalAccuracy</a></b></b> : real</li>
<li class="fn"><b><b><a href="qml-qtpositioning-position.html#verticalAccuracyValid-prop">verticalAccuracyValid</a></b></b> : bool</li>
<li class="fn"><b><b><a href="qml-qtpositioning-position.html#verticalSpeed-prop">verticalSpeed</a></b></b> : double</li>
<li class="fn"><b><b><a href="qml-qtpositioning-position.html#verticalSpeedValid-prop">verticalSpeedValid</a></b></b> : bool</li>
</ul>
<!-- $$$Position-description -->
<a name="details"></a>
<h2>Detailed Description</h2>
<p>The Position type holds values related to geographic location such as a <a href="qml-qtpositioning-position.html#coordinate-prop">coordinate</a> (longitude, latitude, and altitude), the <a href="qml-qtpositioning-position.html#timestamp-prop">timestamp</a> when the Position was obtained, the <a href="qml-qtpositioning-position.html#speed-prop">speed</a> at that time, and the accuracy of the data.</p>
<p>Primarily, it is used in the <a href="qml-qtpositioning-positionsource.html#position-prop">position</a> property of a <a href="qml-qtpositioning-positionsource.html">PositionSource</a>, as the basic unit of data available from the system location data source.</p>
<p>Not all properties of a Position object are necessarily valid or available (for example latitude and longitude may be valid, but speed update has not been received or set manually). As a result, corresponding "valid" properties are available (for example <a href="qml-qtpositioning-position.html#coordinate-prop">coordinate</a> and <a href="qml-qtpositioning-position.html#longitudeValid-prop">longitudeValid</a>, <a href="qml-qtpositioning-position.html#latitudeValid-prop">latitudeValid</a> etc) to discern whether the data is available and valid in this position update.</p>
<p>Position objects are read-only and can only be produced by a <a href="qml-qtpositioning-positionsource.html">PositionSource</a>.</p>
<a name="example-usage"></a>
<h3>Example Usage</h3>
<p>See the example given for the <a href="qml-qtpositioning-positionsource.html">PositionSource</a> type, or the <a href="qtpositioning-flickr-example.html">Flickr</a> example application.</p>
<p><b>See also </b><a href="qml-qtpositioning-positionsource.html">PositionSource</a> and <a href="qml-qtpositioning-position.html#coordinate-prop">coordinate</a>.</p>
<!-- @@@Position -->
<h2>Property Documentation</h2>
<!-- $$$altitudeValid -->
<div class="qmlitem"><div class="qmlproto"><table class="qmlname"><tr valign="top" class="odd"><td class="tblQmlPropNode"><p><a name="altitudeValid-prop"></a><span class="name">altitudeValid</span> : <span class="type">bool</span></p></td></tr></table></div><div class="qmldoc"><p>This property is true if coordinate's altitude has been set (to indicate whether that data has been received or not, as every update does not necessarily contain all data).</p>
<p><b>See also </b><a href="qml-qtpositioning-position.html#coordinate-prop">coordinate</a>.</p>
</div></div><!-- @@@altitudeValid -->
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<!-- $$$coordinate -->
<div class="qmlitem"><div class="qmlproto"><table class="qmlname"><tr valign="top" class="odd"><td class="tblQmlPropNode"><p><a name="coordinate-prop"></a><span class="name">coordinate</span> : <span class="type"><a href="qml-coordinate.html">coordinate</a></span></p></td></tr></table></div><div class="qmldoc"><p>This property holds the latitude, longitude, and altitude value of the Position.</p>
<p>It is a read-only property.</p>
<p><b>See also </b><a href="qml-qtpositioning-position.html#longitudeValid-prop">longitudeValid</a>, <a href="qml-qtpositioning-position.html#latitudeValid-prop">latitudeValid</a>, and <a href="qml-qtpositioning-position.html#altitudeValid-prop">altitudeValid</a>.</p>
</div></div><!-- @@@coordinate -->
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<!-- $$$direction -->
<div class="qmlitem"><div class="qmlproto"><table class="qmlname"><tr valign="top" class="odd"><td class="tblQmlPropNode"><p><a name="direction-prop"></a><span class="name">direction</span> : <span class="type">double</span></p></td></tr></table></div><div class="qmldoc"><p>This property holds the value of the direction of travel in degrees from true north.</p>
<p>It is a read-only property.</p>
<p>This QML property was introduced in Qt Positioning 5.3.</p>
<p><b>See also </b><a href="qml-qtpositioning-position.html#directionValid-prop">directionValid</a>.</p>
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<!-- $$$directionValid -->
<div class="qmlitem"><div class="qmlproto"><table class="qmlname"><tr valign="top" class="odd"><td class="tblQmlPropNode"><p><a name="directionValid-prop"></a><span class="name">directionValid</span> : <span class="type">bool</span></p></td></tr></table></div><div class="qmldoc"><p>This property is true if <a href="qml-qtpositioning-position.html#direction-prop">direction</a> has been set (to indicate whether that data has been received or not, as every update does not necessarily contain all data).</p>
<p>This QML property was introduced in Qt Positioning 5.3.</p>
<p><b>See also </b><a href="qml-qtpositioning-position.html#direction-prop">direction</a>.</p>
</div></div><!-- @@@directionValid -->
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<!-- $$$horizontalAccuracy -->
<div class="qmlitem"><div class="qmlproto"><table class="qmlname"><tr valign="top" class="odd"><td class="tblQmlPropNode"><p><a name="horizontalAccuracy-prop"></a><span class="name">horizontalAccuracy</span> : <span class="type">real</span></p></td></tr></table></div><div class="qmldoc"><p>This property holds the horizontal accuracy of the coordinate (in meters).</p>
<p><b>See also </b><a href="qml-qtpositioning-position.html#horizontalAccuracyValid-prop">horizontalAccuracyValid</a> and <a href="qml-qtpositioning-position.html#coordinate-prop">coordinate</a>.</p>
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<!-- $$$horizontalAccuracyValid -->
<div class="qmlitem"><div class="qmlproto"><table class="qmlname"><tr valign="top" class="odd"><td class="tblQmlPropNode"><p><a name="horizontalAccuracyValid-prop"></a><span class="name">horizontalAccuracyValid</span> : <span class="type">bool</span></p></td></tr></table></div><div class="qmldoc"><p>This property is true if <a href="qml-qtpositioning-position.html#horizontalAccuracy-prop">horizontalAccuracy</a> has been set (to indicate whether that data has been received or not, as every update does not necessarily contain all data).</p>
<p><b>See also </b><a href="qml-qtpositioning-position.html#horizontalAccuracy-prop">horizontalAccuracy</a>.</p>
</div></div><!-- @@@horizontalAccuracyValid -->
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<!-- $$$latitudeValid -->
<div class="qmlitem"><div class="qmlproto"><table class="qmlname"><tr valign="top" class="odd"><td class="tblQmlPropNode"><p><a name="latitudeValid-prop"></a><span class="name">latitudeValid</span> : <span class="type">bool</span></p></td></tr></table></div><div class="qmldoc"><p>This property is true if coordinate's latitude has been set (to indicate whether that data has been received or not, as every update does not necessarily contain all data).</p>
<p><b>See also </b><a href="qml-qtpositioning-position.html#coordinate-prop">coordinate</a>.</p>
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<!-- $$$longitudeValid -->
<div class="qmlitem"><div class="qmlproto"><table class="qmlname"><tr valign="top" class="odd"><td class="tblQmlPropNode"><p><a name="longitudeValid-prop"></a><span class="name">longitudeValid</span> : <span class="type">bool</span></p></td></tr></table></div><div class="qmldoc"><p>This property is true if coordinate's longitude has been set (to indicate whether that data has been received or not, as every update does not necessarily contain all data).</p>
<p><b>See also </b><a href="qml-qtpositioning-position.html#coordinate-prop">coordinate</a>.</p>
</div></div><!-- @@@longitudeValid -->
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<!-- $$$speed -->
<div class="qmlitem"><div class="qmlproto"><table class="qmlname"><tr valign="top" class="odd"><td class="tblQmlPropNode"><p><a name="speed-prop"></a><span class="name">speed</span> : <span class="type">double</span></p></td></tr></table></div><div class="qmldoc"><p>This property holds the value of speed (groundspeed, meters / second).</p>
<p>It is a read-only property.</p>
<p><b>See also </b><a href="qml-qtpositioning-position.html#speedValid-prop">speedValid</a> and <a href="qml-qtpositioning-position.html#coordinate-prop">coordinate</a>.</p>
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<!-- $$$speedValid -->
<div class="qmlitem"><div class="qmlproto"><table class="qmlname"><tr valign="top" class="odd"><td class="tblQmlPropNode"><p><a name="speedValid-prop"></a><span class="name">speedValid</span> : <span class="type">bool</span></p></td></tr></table></div><div class="qmldoc"><p>This property is true if <a href="qml-qtpositioning-position.html#speed-prop">speed</a> has been set (to indicate whether that data has been received or not, as every update does not necessarily contain all data).</p>
<p><b>See also </b><a href="qml-qtpositioning-position.html#speed-prop">speed</a>.</p>
</div></div><!-- @@@speedValid -->
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<!-- $$$timestamp -->
<div class="qmlitem"><div class="qmlproto"><table class="qmlname"><tr valign="top" class="odd"><td class="tblQmlPropNode"><p><a name="timestamp-prop"></a><span class="name">timestamp</span> : <span class="type">date</span></p></td></tr></table></div><div class="qmldoc"><p>This property holds the timestamp when this position was received. If the property has not been set, it is invalid.</p>
<p>It is a read-only property.</p>
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<!-- $$$verticalAccuracy -->
<div class="qmlitem"><div class="qmlproto"><table class="qmlname"><tr valign="top" class="odd"><td class="tblQmlPropNode"><p><a name="verticalAccuracy-prop"></a><span class="name">verticalAccuracy</span> : <span class="type">real</span></p></td></tr></table></div><div class="qmldoc"><p>This property holds the vertical accuracy of the coordinate (in meters).</p>
<p><b>See also </b><a href="qml-qtpositioning-position.html#verticalAccuracyValid-prop">verticalAccuracyValid</a> and <a href="qml-qtpositioning-position.html#coordinate-prop">coordinate</a>.</p>
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<!-- $$$verticalAccuracyValid -->
<div class="qmlitem"><div class="qmlproto"><table class="qmlname"><tr valign="top" class="odd"><td class="tblQmlPropNode"><p><a name="verticalAccuracyValid-prop"></a><span class="name">verticalAccuracyValid</span> : <span class="type">bool</span></p></td></tr></table></div><div class="qmldoc"><p>This property is true if <a href="qml-qtpositioning-position.html#verticalAccuracy-prop">verticalAccuracy</a> has been set (to indicate whether that data has been received or not, as every update does not necessarily contain all data).</p>
<p><b>See also </b><a href="qml-qtpositioning-position.html#verticalAccuracy-prop">verticalAccuracy</a>.</p>
</div></div><!-- @@@verticalAccuracyValid -->
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<!-- $$$verticalSpeed -->
<div class="qmlitem"><div class="qmlproto"><table class="qmlname"><tr valign="top" class="odd"><td class="tblQmlPropNode"><p><a name="verticalSpeed-prop"></a><span class="name">verticalSpeed</span> : <span class="type">double</span></p></td></tr></table></div><div class="qmldoc"><p>This property holds the value of the vertical speed in meters per second.</p>
<p>It is a read-only property.</p>
<p>This QML property was introduced in Qt Positioning 5.3.</p>
<p><b>See also </b><a href="qml-qtpositioning-position.html#verticalSpeedValid-prop">verticalSpeedValid</a>.</p>
</div></div><!-- @@@verticalSpeed -->
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<!-- $$$verticalSpeedValid -->
<div class="qmlitem"><div class="qmlproto"><table class="qmlname"><tr valign="top" class="odd"><td class="tblQmlPropNode"><p><a name="verticalSpeedValid-prop"></a><span class="name">verticalSpeedValid</span> : <span class="type">bool</span></p></td></tr></table></div><div class="qmldoc"><p>This property is true if <a href="qml-qtpositioning-position.html#verticalSpeed-prop">verticalSpeed</a> has been set (to indicate whether that data has been received or not, as every update does not necessarily contain all data).</p>
<p>This QML property was introduced in Qt Positioning 5.3.</p>
<p><b>See also </b><a href="qml-qtpositioning-position.html#verticalSpeed-prop">verticalSpeed</a>.</p>
</div></div><!-- @@@verticalSpeedValid -->
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