<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0//EN" "http://www.w3.org/TR/REC-html40/strict.dtd"> <html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>OpenLayers.Layer.Vector - OpenLayers</title><link rel="stylesheet" type="text/css" href="../../../styles/main.css"><script language=JavaScript src="../../../javascript/main.js"></script><script language=JavaScript src="../../../javascript/prettify.js"></script><script language=JavaScript src="../../../javascript/searchdata.js"></script></head><body class="ContentPage" onLoad="NDOnLoad();prettyPrint();"><script language=JavaScript><!-- if (browserType) {document.write("<div class=" + browserType + ">");if (browserVer) {document.write("<div class=" + browserVer + ">"); }}// --></script> <!-- Generated by Natural Docs, version 1.52 --> <!-- http://www.naturaldocs.org --> <!-- saved from url=(0026)http://www.naturaldocs.org --> <div id=Content><div class="CClass"><div class=CTopic id=MainTopic><h1 class=CTitle><a name="OpenLayers.Layer.Vector"></a>OpenLayers.<wbr>Layer.<wbr>Vector</h1><div class=CBody><p>Instances of OpenLayers.Layer.Vector are used to render vector data from a variety of sources. Create a new vector layer with the <a href="#OpenLayers.Layer.Vector.OpenLayers.Layer.Vector" class=LConstructor id=link16 onMouseOver="ShowTip(event, 'tt16', 'link16')" onMouseOut="HideTip('tt16')">OpenLayers.Layer.Vector</a> constructor.</p><h4 class=CHeading>Inherits from</h4><ul><li><a href="../Layer-js.html#OpenLayers.Layer" class=LClass >OpenLayers.Layer</a></li></ul><!--START_ND_SUMMARY--><div class=Summary><div class=STitle>Summary</div><div class=SBorder><table border=0 cellspacing=0 cellpadding=0 class=STable><tr class="SMain"><td class=SEntry><a href="#OpenLayers.Layer.Vector" >OpenLayers.<wbr>Layer.<wbr>Vector</a></td><td class=SDescription>Instances of OpenLayers.Layer.Vector are used to render vector data from a variety of sources. </td></tr><tr class="SGroup SIndent1"><td class=SEntry><a href="#OpenLayers.Layer.Vector.Properties" >Properties</a></td><td class=SDescription></td></tr><tr class="SProperty SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Vector.events" >events</a></td><td class=SDescription>{<a href="../Events-js.html#OpenLayers.Events" class=LClass >OpenLayers.Events</a>}</td></tr><tr class="SProperty SIndent2"><td class=SEntry><a href="#OpenLayers.Layer.Vector.isBaseLayer" >isBaseLayer</a></td><td class=SDescription>{Boolean} The layer is a base layer. </td></tr><tr class="SProperty SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Vector.isFixed" >isFixed</a></td><td class=SDescription>{Boolean} Whether the layer remains in one place while dragging the map.</td></tr><tr class="SProperty SIndent2"><td class=SEntry><a href="#OpenLayers.Layer.Vector.features" >features</a></td><td class=SDescription>{Array(<a href="../Feature/Vector-js.html#OpenLayers.Feature.Vector" class=LClass id=link1 onMouseOver="ShowTip(event, 'tt1', 'link1')" onMouseOut="HideTip('tt1')">OpenLayers.Feature.Vector</a>)}</td></tr><tr class="SProperty SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Vector.reportError" >reportError</a></td><td class=SDescription>{Boolean} report friendly error message when loading of renderer fails.</td></tr><tr class="SProperty SIndent2"><td class=SEntry><a href="#OpenLayers.Layer.Vector.style" >style</a></td><td class=SDescription>{Object} Default style for the layer</td></tr><tr class="SProperty SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Vector.rendererOptions" >rendererOptions</a></td><td class=SDescription>{Object} Options for the renderer. </td></tr><tr class="SProperty SIndent2"><td class=SEntry><a href="#OpenLayers.Layer.Vector.geometryType" >geometryType</a></td><td class=SDescription>{String} geometryType allows you to limit the types of geometries this layer supports. </td></tr><tr class="SProperty SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Vector.ratio" >ratio</a></td><td class=SDescription>{Float} This specifies the ratio of the size of the visiblity of the Vector Layer features to the size of the map.</td></tr><tr class="SGroup SIndent1"><td class=SEntry><a href="#OpenLayers.Layer.Vector.Constructor" >Constructor</a></td><td class=SDescription></td></tr><tr class="SConstructor SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Vector.OpenLayers.Layer.Vector" >OpenLayers.<wbr>Layer.<wbr>Vector</a></td><td class=SDescription>Create a new vector layer</td></tr><tr class="SGroup SIndent1"><td class=SEntry><a href="#OpenLayers.Layer.Vector.Functions" >Functions</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Vector.destroy" id=link2 onMouseOver="ShowTip(event, 'tt2', 'link2')" onMouseOut="HideTip('tt2')">destroy</a></td><td class=SDescription>Destroy this layer</td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Layer.Vector.display" id=link3 onMouseOver="ShowTip(event, 'tt3', 'link3')" onMouseOut="HideTip('tt3')">display</a></td><td class=SDescription>Hide or show the Layer</td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Vector.addFeatures" id=link4 onMouseOver="ShowTip(event, 'tt4', 'link4')" onMouseOut="HideTip('tt4')">addFeatures</a></td><td class=SDescription>Add Features to the layer.</td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Layer.Vector.removeFeatures" id=link5 onMouseOver="ShowTip(event, 'tt5', 'link5')" onMouseOut="HideTip('tt5')">removeFeatures</a></td><td class=SDescription>Remove features from the layer. </td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Vector.removeAllFeatures" id=link6 onMouseOver="ShowTip(event, 'tt6', 'link6')" onMouseOut="HideTip('tt6')">removeAllFeatures</a></td><td class=SDescription>Remove all features from the layer.</td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Layer.Vector.destroyFeatures" id=link7 onMouseOver="ShowTip(event, 'tt7', 'link7')" onMouseOut="HideTip('tt7')">destroyFeatures</a></td><td class=SDescription>Erase and destroy features on the layer.</td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Vector.drawFeature" id=link8 onMouseOver="ShowTip(event, 'tt8', 'link8')" onMouseOut="HideTip('tt8')">drawFeature</a></td><td class=SDescription>Draw (or redraw) a feature on the layer. </td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Layer.Vector.getFeatureBy" id=link9 onMouseOver="ShowTip(event, 'tt9', 'link9')" onMouseOut="HideTip('tt9')">getFeatureBy</a></td><td class=SDescription>Given a property value, return the feature if it exists in the features array</td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Vector.getFeatureById" id=link10 onMouseOver="ShowTip(event, 'tt10', 'link10')" onMouseOut="HideTip('tt10')">getFeatureById</a></td><td class=SDescription>Given a feature id, return the feature if it exists in the features array</td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Layer.Vector.getFeatureByFid" id=link11 onMouseOver="ShowTip(event, 'tt11', 'link11')" onMouseOut="HideTip('tt11')">getFeatureByFid</a></td><td class=SDescription>Given a feature fid, return the feature if it exists in the features array</td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Vector.getFeaturesByAttribute" id=link12 onMouseOver="ShowTip(event, 'tt12', 'link12')" onMouseOut="HideTip('tt12')">getFeaturesByAttribute</a></td><td class=SDescription>Returns an array of features that have the given attribute key set to the given value. </td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Layer.Vector.onFeatureInsert" id=link13 onMouseOver="ShowTip(event, 'tt13', 'link13')" onMouseOut="HideTip('tt13')">onFeatureInsert</a></td><td class=SDescription>method called after a feature is inserted. </td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Vector.preFeatureInsert" id=link14 onMouseOver="ShowTip(event, 'tt14', 'link14')" onMouseOut="HideTip('tt14')">preFeatureInsert</a></td><td class=SDescription>method called before a feature is inserted. </td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Layer.Vector.getDataExtent" id=link15 onMouseOver="ShowTip(event, 'tt15', 'link15')" onMouseOut="HideTip('tt15')">getDataExtent</a></td><td class=SDescription>Calculates the max extent which includes all of the features.</td></tr></table></div></div><!--END_ND_SUMMARY--></div></div></div> <div class="CGroup"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.Properties"></a>Properties</h3></div></div> <div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.events"></a>events</h3><div class=CBody><p>{<a href="../Events-js.html#OpenLayers.Events" class=LClass >OpenLayers.Events</a>}</p><h4 class=CHeading>Register a listener for a particular event with the following syntax</h4><blockquote><pre class="prettyprint">layer.events.register(type, obj, listener);</pre></blockquote><p>Listeners will be called with a reference to an event object. The properties of this event depends on exactly what happened.</p><h4 class=CHeading>All event objects have at least the following properties</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>object</td><td class=CDLDescription>{Object} A reference to layer.events.object.</td></tr><tr><td class=CDLEntry>element</td><td class=CDLDescription>{DOMElement} A reference to layer.events.element.</td></tr></table><h4 class=CHeading>Supported map event types (in addition to those from <a href="../Layer-js.html#OpenLayers.Layer.events" class=LProperty id=link17 onMouseOver="ShowTip(event, 'tt17', 'link17')" onMouseOut="HideTip('tt17')">OpenLayers.Layer.events</a>)</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>beforefeatureadded</td><td class=CDLDescription>Triggered before a feature is added. Listeners will receive an object with a <b>feature</b> property referencing the feature to be added. To stop the feature from being added, a listener should return false.</td></tr><tr><td class=CDLEntry>beforefeaturesadded</td><td class=CDLDescription>Triggered before an array of features is added. Listeners will receive an object with a <b>features</b> property referencing the feature to be added. To stop the features from being added, a listener should return false.</td></tr><tr><td class=CDLEntry>featureadded</td><td class=CDLDescription>Triggered after a feature is added. The event object passed to listeners will have a <b>feature</b> property with a reference to the added feature.</td></tr><tr><td class=CDLEntry>featuresadded</td><td class=CDLDescription>Triggered after features are added. The event object passed to listeners will have a <b>features</b> property with a reference to an array of added features.</td></tr><tr><td class=CDLEntry>beforefeatureremoved</td><td class=CDLDescription>Triggered before a feature is removed. Listeners will receive an object with a <b>feature</b> property referencing the feature to be removed.</td></tr><tr><td class=CDLEntry>beforefeaturesremoved</td><td class=CDLDescription>Triggered before multiple features are removed. Listeners will receive an object with a <b>features</b> property referencing the features to be removed.</td></tr><tr><td class=CDLEntry>featureremoved</td><td class=CDLDescription>Triggerd after a feature is removed. The event object passed to listeners will have a <b>feature</b> property with a reference to the removed feature.</td></tr><tr><td class=CDLEntry>featuresremoved</td><td class=CDLDescription>Triggered after features are removed. The event object passed to listeners will have a <b>features</b> property with a reference to an array of removed features.</td></tr><tr><td class=CDLEntry>beforefeatureselected</td><td class=CDLDescription>Triggered before a feature is selected. Listeners will receive an object with a <b>feature</b> property referencing the feature to be selected. To stop the feature from being selectd, a listener should return false.</td></tr><tr><td class=CDLEntry>featureselected</td><td class=CDLDescription>Triggered after a feature is selected. Listeners will receive an object with a <b>feature</b> property referencing the selected feature.</td></tr><tr><td class=CDLEntry>featureunselected</td><td class=CDLDescription>Triggered after a feature is unselected. Listeners will receive an object with a <b>feature</b> property referencing the unselected feature.</td></tr><tr><td class=CDLEntry>beforefeaturemodified</td><td class=CDLDescription>Triggered when a feature is selected to be modified. Listeners will receive an object with a <b>feature</b> property referencing the selected feature.</td></tr><tr><td class=CDLEntry>featuremodified</td><td class=CDLDescription>Triggered when a feature has been modified. Listeners will receive an object with a <b>feature</b> property referencing the modified feature.</td></tr><tr><td class=CDLEntry>afterfeaturemodified</td><td class=CDLDescription>Triggered when a feature is finished being modified. Listeners will receive an object with a <b>feature</b> property referencing the modified feature.</td></tr><tr><td class=CDLEntry>vertexmodified</td><td class=CDLDescription>Triggered when a vertex within any feature geometry has been modified. Listeners will receive an object with a <b>feature</b> property referencing the modified feature, a <b>vertex</b> property referencing the vertex modified (always a point geometry), and a <b>pixel</b> property referencing the pixel location of the modification.</td></tr><tr><td class=CDLEntry>vertexremoved</td><td class=CDLDescription>Triggered when a vertex within any feature geometry has been deleted. Listeners will receive an object with a <b>feature</b> property referencing the modified feature, a <b>vertex</b> property referencing the vertex modified (always a point geometry), and a <b>pixel</b> property referencing the pixel location of the removal.</td></tr><tr><td class=CDLEntry>sketchstarted</td><td class=CDLDescription>Triggered when a feature sketch bound for this layer is started. Listeners will receive an object with a <b>feature</b> property referencing the new sketch feature and a <b>vertex</b> property referencing the creation point.</td></tr><tr><td class=CDLEntry>sketchmodified</td><td class=CDLDescription>Triggered when a feature sketch bound for this layer is modified. Listeners will receive an object with a <b>vertex</b> property referencing the modified vertex and a <b>feature</b> property referencing the sketch feature.</td></tr><tr><td class=CDLEntry>sketchcomplete</td><td class=CDLDescription>Triggered when a feature sketch bound for this layer is complete. Listeners will receive an object with a <b>feature</b> property referencing the sketch feature. By returning false, a listener can stop the sketch feature from being added to the layer.</td></tr><tr><td class=CDLEntry>refresh</td><td class=CDLDescription>Triggered when something wants a strategy to ask the protocol for a new set of features.</td></tr></table></div></div></div> <div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.isBaseLayer"></a>isBaseLayer</h3><div class=CBody><p>{Boolean} The layer is a base layer. Default is false. Set this property in the layer options.</p></div></div></div> <div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.isFixed"></a>isFixed</h3><div class=CBody><p>{Boolean} Whether the layer remains in one place while dragging the map.</p></div></div></div> <div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.features"></a>features</h3><div class=CBody><p>{Array(<a href="../Feature/Vector-js.html#OpenLayers.Feature.Vector" class=LClass id=link18 onMouseOver="ShowTip(event, 'tt1', 'link18')" onMouseOut="HideTip('tt1')">OpenLayers.Feature.Vector</a>)}</p></div></div></div> <div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.reportError"></a>reportError</h3><div class=CBody><p>{Boolean} report friendly error message when loading of renderer fails.</p></div></div></div> <div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.style"></a>style</h3><div class=CBody><p>{Object} Default style for the layer</p></div></div></div> <div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.rendererOptions"></a>rendererOptions</h3><div class=CBody><p>{Object} Options for the renderer. See {<a href="../Renderer-js.html#OpenLayers.Renderer" class=LClass id=link19 onMouseOver="ShowTip(event, 'tt18', 'link19')" onMouseOut="HideTip('tt18')">OpenLayers.Renderer</a>} for supported options.</p></div></div></div> <div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.geometryType"></a>geometryType</h3><div class=CBody><p>{String} geometryType allows you to limit the types of geometries this layer supports. This should be set to something like “OpenLayers.Geometry.Point” to limit types.</p></div></div></div> <div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.ratio"></a>ratio</h3><div class=CBody><p>{Float} This specifies the ratio of the size of the visiblity of the Vector Layer features to the size of the map.</p></div></div></div> <div class="CGroup"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.Constructor"></a>Constructor</h3></div></div> <div class="CConstructor"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.OpenLayers.Layer.Vector"></a>OpenLayers.<wbr>Layer.<wbr>Vector</h3><div class=CBody><p>Create a new vector layer</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>name</td><td class=CDLDescription>{String} A name for the layer</td></tr><tr><td class=CDLEntry>options</td><td class=CDLDescription>{Object} Optional object with non-default properties to set on the layer.</td></tr></table><h4 class=CHeading>Returns</h4><p>{<a href="#OpenLayers.Layer.Vector.OpenLayers.Layer.Vector" class=LConstructor id=link20 onMouseOver="ShowTip(event, 'tt16', 'link20')" onMouseOut="HideTip('tt16')">OpenLayers.Layer.Vector</a>} A new vector layer</p></div></div></div> <div class="CGroup"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.Functions"></a>Functions</h3></div></div> <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.destroy"></a>destroy</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">destroy: function()</td></tr></table></blockquote><p>Destroy this layer</p></div></div></div> <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.display"></a>display</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters prettyprint "nowrap>display: function(</td><td class="PParameter prettyprint " nowrap>display</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Hide or show the Layer</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>display</td><td class=CDLDescription>{Boolean}</td></tr></table></div></div></div> <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.addFeatures"></a>addFeatures</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters prettyprint "nowrap>addFeatures: function(</td><td class="PParameter prettyprint " nowrap>features,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>options</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Add Features to the layer.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>features</td><td class=CDLDescription>{Array(<a href="../Feature/Vector-js.html#OpenLayers.Feature.Vector" class=LClass id=link21 onMouseOver="ShowTip(event, 'tt1', 'link21')" onMouseOut="HideTip('tt1')">OpenLayers.Feature.Vector</a>)}</td></tr><tr><td class=CDLEntry>options</td><td class=CDLDescription>{Object}</td></tr></table></div></div></div> <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.removeFeatures"></a>removeFeatures</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters prettyprint "nowrap>removeFeatures: function(</td><td class="PParameter prettyprint " nowrap>features,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>options</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Remove features from the layer. This erases any drawn features and removes them from the layer’s control. The beforefeatureremoved and featureremoved events will be triggered for each feature. The featuresremoved event will be triggered after all features have been removed. To supress event triggering, use the silent option.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>features</td><td class=CDLDescription>{Array(<a href="../Feature/Vector-js.html#OpenLayers.Feature.Vector" class=LClass id=link22 onMouseOver="ShowTip(event, 'tt1', 'link22')" onMouseOut="HideTip('tt1')">OpenLayers.Feature.Vector</a>)} List of features to be removed.</td></tr><tr><td class=CDLEntry>options</td><td class=CDLDescription>{Object} Optional properties for changing behavior of the removal.</td></tr></table><h4 class=CHeading>Valid options</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>silent</td><td class=CDLDescription>{Boolean} Supress event triggering. Default is false.</td></tr></table></div></div></div> <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.removeAllFeatures"></a>removeAllFeatures</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters prettyprint "nowrap>removeAllFeatures: function(</td><td class="PParameter prettyprint " nowrap>options</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Remove all features from the layer.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>options</td><td class=CDLDescription>{Object} Optional properties for changing behavior of the removal.</td></tr></table><h4 class=CHeading>Valid options</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>silent</td><td class=CDLDescription>{Boolean} Supress event triggering. Default is false.</td></tr></table></div></div></div> <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.destroyFeatures"></a>destroyFeatures</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters prettyprint "nowrap>destroyFeatures: function(</td><td class="PParameter prettyprint " nowrap>features,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>options</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Erase and destroy features on the layer.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>features</td><td class=CDLDescription>{Array(<a href="../Feature/Vector-js.html#OpenLayers.Feature.Vector" class=LClass id=link23 onMouseOver="ShowTip(event, 'tt1', 'link23')" onMouseOut="HideTip('tt1')">OpenLayers.Feature.Vector</a>)} An optional array of features to destroy. If not supplied, all features on the layer will be destroyed.</td></tr><tr><td class=CDLEntry>options</td><td class=CDLDescription>{Object}</td></tr></table></div></div></div> <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.drawFeature"></a>drawFeature</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters prettyprint "nowrap>drawFeature: function(</td><td class="PParameter prettyprint " nowrap>feature,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>style</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Draw (or redraw) a feature on the layer. If the optional style argument is included, this style will be used. If no style is included, the feature’s style will be used. If the feature doesn’t have a style, the layer’s style will be used.</p><p>This function is not designed to be used when adding features to the layer (use addFeatures instead). It is meant to be used when the style of a feature has changed, or in some other way needs to visually updated <b>after</b> it has already been added to a layer. You must add the feature to the layer for most layer-related events to happen.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>feature</td><td class=CDLDescription>{<a href="../Feature/Vector-js.html#OpenLayers.Feature.Vector" class=LClass id=link24 onMouseOver="ShowTip(event, 'tt1', 'link24')" onMouseOut="HideTip('tt1')">OpenLayers.Feature.Vector</a>}</td></tr><tr><td class=CDLEntry>style</td><td class=CDLDescription>{String | Object} Named render intent or full symbolizer object.</td></tr></table></div></div></div> <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.getFeatureBy"></a>getFeatureBy</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters prettyprint "nowrap>getFeatureBy: function(</td><td class="PParameter prettyprint " nowrap>property,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>value</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Given a property value, return the feature if it exists in the features array</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>property</td><td class=CDLDescription>{String}</td></tr><tr><td class=CDLEntry>value</td><td class=CDLDescription>{String}</td></tr></table><h4 class=CHeading>Returns</h4><p>{<a href="../Feature/Vector-js.html#OpenLayers.Feature.Vector" class=LClass id=link25 onMouseOver="ShowTip(event, 'tt1', 'link25')" onMouseOut="HideTip('tt1')">OpenLayers.Feature.Vector</a>} A feature corresponding to the given property value or null if there is no such feature.</p></div></div></div> <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.getFeatureById"></a>getFeatureById</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters prettyprint "nowrap>getFeatureById: function(</td><td class="PParameter prettyprint " nowrap>featureId</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Given a feature id, return the feature if it exists in the features array</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>featureId</td><td class=CDLDescription>{String}</td></tr></table><h4 class=CHeading>Returns</h4><p>{<a href="../Feature/Vector-js.html#OpenLayers.Feature.Vector" class=LClass id=link26 onMouseOver="ShowTip(event, 'tt1', 'link26')" onMouseOut="HideTip('tt1')">OpenLayers.Feature.Vector</a>} A feature corresponding to the given featureId or null if there is no such feature.</p></div></div></div> <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.getFeatureByFid"></a>getFeatureByFid</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters prettyprint "nowrap>getFeatureByFid: function(</td><td class="PParameter prettyprint " nowrap>featureFid</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Given a feature fid, return the feature if it exists in the features array</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>featureFid</td><td class=CDLDescription>{String}</td></tr></table><h4 class=CHeading>Returns</h4><p>{<a href="../Feature/Vector-js.html#OpenLayers.Feature.Vector" class=LClass id=link27 onMouseOver="ShowTip(event, 'tt1', 'link27')" onMouseOut="HideTip('tt1')">OpenLayers.Feature.Vector</a>} A feature corresponding to the given featureFid or null if there is no such feature.</p></div></div></div> <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.getFeaturesByAttribute"></a>getFeaturesByAttribute</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters prettyprint "nowrap>getFeaturesByAttribute: function(</td><td class="PParameter prettyprint " nowrap>attrName,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>attrValue</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Returns an array of features that have the given attribute key set to the given value. Comparison of attribute values takes care of datatypes, e.g. the string ‘1234’ is not equal to the number 1234.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>attrName</td><td class=CDLDescription>{String}</td></tr><tr><td class=CDLEntry>attrValue</td><td class=CDLDescription>{Mixed}</td></tr></table><h4 class=CHeading>Returns</h4><p>Array({<a href="../Feature/Vector-js.html#OpenLayers.Feature.Vector" class=LClass id=link28 onMouseOver="ShowTip(event, 'tt1', 'link28')" onMouseOut="HideTip('tt1')">OpenLayers.Feature.Vector</a>}) An array of features that have the passed named attribute set to the given value.</p></div></div></div> <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.onFeatureInsert"></a>onFeatureInsert</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters prettyprint "nowrap>onFeatureInsert: function(</td><td class="PParameter prettyprint " nowrap>feature</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>method called after a feature is inserted. Does nothing by default. Override this if you need to do something on feature updates.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>feature</td><td class=CDLDescription>{<a href="../Feature/Vector-js.html#OpenLayers.Feature.Vector" class=LClass id=link29 onMouseOver="ShowTip(event, 'tt1', 'link29')" onMouseOut="HideTip('tt1')">OpenLayers.Feature.Vector</a>}</td></tr></table></div></div></div> <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.preFeatureInsert"></a>preFeatureInsert</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters prettyprint "nowrap>preFeatureInsert: function(</td><td class="PParameter prettyprint " nowrap>feature</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>method called before a feature is inserted. Does nothing by default. Override this if you need to do something when features are first added to the layer, but before they are drawn, such as adjust the style.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>feature</td><td class=CDLDescription>{<a href="../Feature/Vector-js.html#OpenLayers.Feature.Vector" class=LClass id=link30 onMouseOver="ShowTip(event, 'tt1', 'link30')" onMouseOut="HideTip('tt1')">OpenLayers.Feature.Vector</a>}</td></tr></table></div></div></div> <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.getDataExtent"></a>getDataExtent</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">getDataExtent: function ()</td></tr></table></blockquote><p>Calculates the max extent which includes all of the features.</p><h4 class=CHeading>Returns</h4><p>{<a href="../BaseTypes/Bounds-js.html#OpenLayers.Bounds" class=LClass id=link31 onMouseOver="ShowTip(event, 'tt19', 'link31')" onMouseOut="HideTip('tt19')">OpenLayers.Bounds</a>} or null if the layer has no features with geometries.</p></div></div></div> </div><!--Content--> <div id=Footer><a href="http://www.naturaldocs.org">Generated by Natural Docs</a></div><!--Footer--> <div id=Menu><div class=MTitle>OpenLayers<div class=MSubTitle>JavaScript Mapping Library</div></div><div class=MEntry><div class=MGroup><a href="javascript:ToggleMenu('MGroupContent32')">OpenLayers</a><div class=MGroupContent id=MGroupContent32><div class=MEntry><div class=MFile><a href="../../OpenLayers-js.html">OpenLayers</a></div></div><div class=MEntry><div class=MGroup><a href="javascript:ToggleMenu('MGroupContent1')">BaseTypes</a><div class=MGroupContent id=MGroupContent1><div class=MEntry><div class=MFile><a href="../BaseTypes-js.html">Base Types</a></div></div><div class=MEntry><div class=MFile><a href="../BaseTypes/Bounds-js.html">Bounds</a></div></div><div 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href="../../../index/Constructor.html">Constructor</a></div></div></div></div></div><script type="text/javascript"><!-- var searchPanel = new SearchPanel("searchPanel", "HTML", "../../../search"); --></script><div id=MSearchPanel class=MSearchPanelInactive><input type=text id=MSearchField value=Search onFocus="searchPanel.OnSearchFieldFocus(true)" onBlur="searchPanel.OnSearchFieldFocus(false)" onKeyUp="searchPanel.OnSearchFieldChange()"><select id=MSearchType onFocus="searchPanel.OnSearchTypeFocus(true)" onBlur="searchPanel.OnSearchTypeFocus(false)" onChange="searchPanel.OnSearchTypeChange()"><option id=MSearchEverything selected value="General">Everything</option><option value="Classes">Classes</option><option value="Constants">Constants</option><option value="Constructor">Constructor</option><option value="Files">Files</option><option value="Functions">Functions</option><option value="Properties">Properties</option></select></div><script language=JavaScript><!-- HideAllBut([19, 20, 32], 34);// --></script></div><!--Menu--> <!--START_ND_TOOLTIPS--> <div class=CToolTip id="tt1"><div class=CClass>Vector features use the OpenLayers.Geometry classes as geometry description. </div></div><div class=CToolTip id="tt2"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">destroy: function()</td></tr></table></blockquote>Destroy this layer</div></div><div class=CToolTip id="tt3"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters prettyprint "nowrap>display: function(</td><td class="PParameter prettyprint " nowrap>display</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Hide or show the Layer</div></div><div class=CToolTip id="tt4"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters prettyprint "nowrap>addFeatures: function(</td><td class="PParameter prettyprint " nowrap>features,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>options</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Add Features to the layer.</div></div><div class=CToolTip id="tt5"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters prettyprint "nowrap>removeFeatures: function(</td><td class="PParameter prettyprint " nowrap>features,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>options</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Remove features from the layer. </div></div><div class=CToolTip id="tt6"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters prettyprint "nowrap>removeAllFeatures: function(</td><td class="PParameter prettyprint " nowrap>options</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Remove all features from the layer.</div></div><div class=CToolTip id="tt7"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters prettyprint "nowrap>destroyFeatures: function(</td><td class="PParameter prettyprint " nowrap>features,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>options</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Erase and destroy features on the layer.</div></div><div class=CToolTip id="tt8"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters prettyprint "nowrap>drawFeature: function(</td><td class="PParameter prettyprint " nowrap>feature,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>style</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Draw (or redraw) a feature on the layer. </div></div><div class=CToolTip id="tt9"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters prettyprint "nowrap>getFeatureBy: function(</td><td class="PParameter prettyprint " nowrap>property,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>value</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Given a property value, return the feature if it exists in the features array</div></div><div class=CToolTip id="tt10"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters prettyprint "nowrap>getFeatureById: function(</td><td class="PParameter prettyprint " nowrap>featureId</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Given a feature id, return the feature if it exists in the features array</div></div><div class=CToolTip id="tt11"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters prettyprint "nowrap>getFeatureByFid: function(</td><td class="PParameter prettyprint " nowrap>featureFid</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Given a feature fid, return the feature if it exists in the features array</div></div><div class=CToolTip id="tt12"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters prettyprint "nowrap>getFeaturesByAttribute: function(</td><td class="PParameter prettyprint " nowrap>attrName,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>attrValue</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Returns an array of features that have the given attribute key set to the given value. </div></div><div class=CToolTip id="tt13"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters prettyprint "nowrap>onFeatureInsert: function(</td><td class="PParameter prettyprint " nowrap>feature</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>method called after a feature is inserted. </div></div><div class=CToolTip id="tt14"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters prettyprint "nowrap>preFeatureInsert: function(</td><td class="PParameter prettyprint " nowrap>feature</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>method called before a feature is inserted. </div></div><div class=CToolTip id="tt15"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">getDataExtent: function ()</td></tr></table></blockquote>Calculates the max extent which includes all of the features.</div></div><div class=CToolTip id="tt16"><div class=CConstructor>Create a new vector layer</div></div><div class=CToolTip id="tt17"><div class=CProperty>{OpenLayers.Events}</div></div><div class=CToolTip id="tt18"><div class=CClass>This is the base class for all renderers.</div></div><div class=CToolTip id="tt19"><div class=CClass>Instances of this class represent bounding boxes. </div></div><!--END_ND_TOOLTIPS--> <div id=MSearchResultsWindow><iframe src="" frameborder=0 name=MSearchResults id=MSearchResults></iframe><a href="javascript:searchPanel.CloseResultsWindow()" id=MSearchResultsWindowClose>Close</a></div> <script language=JavaScript><!-- if (browserType) {if (browserVer) {document.write("</div>"); }document.write("</div>");}// --></script></body></html>