rn_supermap

<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <title>JSDoc: Class: Layer</title> <script src="scripts/prettify/prettify.js"> </script> <script src="scripts/prettify/lang-css.js"> </script>  <link type="text/css" rel="stylesheet" href="styles/prettify-tomorrow.css"> <link type="text/css" rel="stylesheet" href="styles/jsdoc-default.css"> </head> <body> <div id="main"> <h1 class="page-title">Class: Layer</h1> <section> <header> <h2>Layer</h2> </header> <article> <div class="container-overview"> <h4 class="name" id="Layer"><span class="type-signature"></span>new Layer<span class="signature">()</span><span class="type-signature"></span></h4> <div class="description"> (该类的实例不可被创建,只可以通过在 Map 类中的 addLayer 方法来创建)该类提供了图层显示和控制等的便于地图管理的一系列方法。当数据集被加载到地图窗口中显示的时，就形成了一个图层，因此图层是数据集的可视化显示。一个图层是对一个数据集的引用或参考。通过对可视化的图层的编辑，可以对相应的数据集的要素进行编辑。一个图层或多个图层叠加显示则形成了地图。图层分为普通图层和专题图层，矢量的普通图层中所有要素采用相同的渲染风格，栅格图层采用颜色表来显示其像元；而专题图层则采用指定类型的专题图风格来渲染其中的要素或像元。 </div> <dl class="details"> <dt class="tag-source">Source:</dt> <dd class="tag-source"><ul class="dummy"><li> <a href="Layer.js.html">Layer.js</a>, <a href="Layer.js.html#line14">line 14</a> </li></ul></dd> </dl> </div> <h3 class="subsection-title">Methods</h3> <h4 class="name" id=".getAdditionalSetting"><span class="type-signature">(static) </span>getAdditionalSetting<span class="signature">()</span><span class="type-signature"> → {Promise.<<a href="LayerSetting.html">LayerSetting</a>>}</span></h4> <div class="description"> 返回普通图层的风格设置。LayerSettingVector 类用来对矢量数据图层风格进行设置和修改。 </div> <dl class="details"> <dt class="tag-source">Source:</dt> <dd class="tag-source"><ul class="dummy"><li> <a href="Layer.js.html">Layer.js</a>, <a href="Layer.js.html#line169">line 169</a> </li></ul></dd> </dl> <h5>Returns:</h5> <dl> <dt> Type </dt> <dd> <span class="param-type">Promise.<<a href="LayerSetting.html">LayerSetting</a>></span> </dd> </dl> <h4 class="name" id=".getDataset"><span class="type-signature">(static) </span>getDataset<span class="signature">()</span><span class="type-signature"> → {Promise.<<a href="Dataset.html">Dataset</a>>}</span></h4> <div class="description"> 返回此图层对应的数据集对象。图层是对数据集的引用，因而，一个图层与一个数据集相对应。 </div> <dl class="details"> <dt class="tag-source">Source:</dt> <dd class="tag-source"><ul class="dummy"><li> <a href="Layer.js.html">Layer.js</a>, <a href="Layer.js.html#line65">line 65</a> </li></ul></dd> </dl> <h5>Returns:</h5> <dl> <dt> Type </dt> <dd> <span class="param-type">Promise.<<a href="Dataset.html">Dataset</a>></span> </dd> </dl> <h4 class="name" id=".getEditable"><span class="type-signature">(static) </span>getEditable<span class="signature">()</span><span class="type-signature"> → {Promise.<boolean>}</span></h4> <div class="description"> 判断图层是否处于可编辑状态。 </div> <dl class="details"> <dt class="tag-source">Source:</dt> <dd class="tag-source"><ul class="dummy"><li> <a href="Layer.js.html">Layer.js</a>, <a href="Layer.js.html#line37">line 37</a> </li></ul></dd> </dl> <h5>Returns:</h5> <dl> <dt> Type </dt> <dd> <span class="param-type">Promise.<boolean></span> </dd> </dl> <h4 class="name" id=".getName"><span class="type-signature">(static) </span>getName<span class="signature">()</span><span class="type-signature"> → {Promise.<void>}</span></h4> <div class="description"> 返回图层的名称。图层的名称在图层所在的地图中唯一标识此图层。该标识不区分大小写。 </div> <dl class="details"> <dt class="tag-source">Source:</dt> <dd class="tag-source"><ul class="dummy"><li> <a href="Layer.js.html">Layer.js</a>, <a href="Layer.js.html#line51">line 51</a> </li></ul></dd> </dl> <h5>Returns:</h5> <dl> <dt> Type </dt> <dd> <span class="param-type">Promise.<void></span> </dd> </dl> <h4 class="name" id=".getSelection"><span class="type-signature">(static) </span>getSelection<span class="signature">()</span><span class="type-signature"> → {Promise.<<a href="Selection.html">Selection</a>>}</span></h4> <div class="description"> 返回此图层中的选择集对象。选择集是个集合，其中包含选择的图层中的一个或多个要素。在选择集中的要素才可以被编辑。注意选择集只适用于矢量数据集，栅格数据集和影像数据集没有选择集。 </div> <dl class="details"> <dt class="tag-source">Source:</dt> <dd class="tag-source"><ul class="dummy"><li> <a href="Layer.js.html">Layer.js</a>, <a href="Layer.js.html#line95">line 95</a> </li></ul></dd> </dl> <h5>Returns:</h5> <dl> <dt> Type </dt> <dd> <span class="param-type">Promise.<<a href="Selection.html">Selection</a>></span> </dd> </dl> <h4 class="name" id=".getVisible"><span class="type-signature">(static) </span>getVisible<span class="signature">()</span><span class="type-signature"> → {Promise.<boolean>}</span></h4> <div class="description"> 获取此图层是否可见。true 表示此图层可见，false 表示图层不可见。当图层不可见时，其他所有的属性的设置将无效。 </div> <dl class="details"> <dt class="tag-source">Source:</dt> <dd class="tag-source"><ul class="dummy"><li> <a href="Layer.js.html">Layer.js</a>, <a href="Layer.js.html#line141">line 141</a> </li></ul></dd> </dl> <h5>Returns:</h5> <dl> <dt> Type </dt> <dd> <span class="param-type">Promise.<boolean></span> </dd> </dl> <h4 class="name" id=".isSelectable"><span class="type-signature">(static) </span>isSelectable<span class="signature">()</span><span class="type-signature"> → {Promise.<boolean>}</span></h4> <div class="description"> 返回图层中对象是否可以选择 </div> <h5>Parameters:</h5> <table class="params"> <thead> <tr> <th>Type</th> <th class="last">Description</th> </tr> </thead> <tbody> <tr> <td class="type"> <span class="param-type">void</span> </td> <td class="description last"></td> </tr> </tbody> </table> <dl class="details"> <dt class="tag-source">Source:</dt> <dd class="tag-source"><ul class="dummy"><li> <a href="Layer.js.html">Layer.js</a>, <a href="Layer.js.html#line127">line 127</a> </li></ul></dd> </dl> <h5>Returns:</h5> <dl> <dt> Type </dt> <dd> <span class="param-type">Promise.<boolean></span> </dd> </dl> <h4 class="name" id=".setAdditionalSetting"><span class="type-signature">(static) </span>setAdditionalSetting<span class="signature">(layerSetting)</span><span class="type-signature"> → {Promise.<void>}</span></h4> <div class="description"> 设置普通图层的风格。普通图层风格的设置对矢量数据图层、栅格数据图层以及影像数据图层是不相同的。LayerSettingVector类用来对矢量数据图层的风格进行设置和修改。 </div> <h5>Parameters:</h5> <table class="params"> <thead> <tr> <th>Name</th> <th>Type</th> <th class="last">Description</th> </tr> </thead> <tbody> <tr> <td class="name"><code>layerSetting</code></td> <td class="type"> <span class="param-type"><a href="LayerSetting.html">LayerSetting</a></span> </td> <td class="description last">普通图层的风格设置.<a href="LayerSetting.html">LayerSetting</a></td> </tr> </tbody> </table> <dl class="details"> <dt class="tag-source">Source:</dt> <dd class="tag-source"><ul class="dummy"><li> <a href="Layer.js.html">Layer.js</a>, <a href="Layer.js.html#line193">line 193</a> </li></ul></dd> </dl> <h5>Returns:</h5> <dl> <dt> Type </dt> <dd> <span class="param-type">Promise.<void></span> </dd> </dl> <h4 class="name" id=".setDataset"><span class="type-signature">(static) </span>setDataset<span class="signature">(dataset)</span><span class="type-signature"> → {Promise.<void>}</span></h4> <div class="description"> 设置图层关联的数据集。设置的数据集必须与当前地图属于同一工作空间，且数据集类型与原有数据集类型一致，否则会抛出异常(该方法暂不支持iOS设备)。 </div> <h5>Parameters:</h5> <table class="params"> <thead> <tr> <th>Name</th> <th>Type</th> <th class="last">Description</th> </tr> </thead> <tbody> <tr> <td class="name"><code>dataset</code></td> <td class="type"> <span class="param-type">object</span> </td> <td class="description last">图层关联的数据集</td> </tr> </tbody> </table> <dl class="details"> <dt class="tag-source">Source:</dt> <dd class="tag-source"><ul class="dummy"><li> <a href="Layer.js.html">Layer.js</a>, <a href="Layer.js.html#line82">line 82</a> </li></ul></dd> </dl> <h5>Returns:</h5> <dl> <dt> Type </dt> <dd> <span class="param-type">Promise.<void></span> </dd> </dl> <h4 class="name" id=".setEditable"><span class="type-signature">(static) </span>setEditable<span class="signature">(editable)</span><span class="type-signature"> → {Promise.<void>}</span></h4> <div class="description"> 设置图层是否处于可编辑状态。该方法控制是否对图层所引用的数据进行修改。 </div> <h5>Parameters:</h5> <table class="params"> <thead> <tr> <th>Name</th> <th>Type</th> <th class="last">Description</th> </tr> </thead> <tbody> <tr> <td class="name"><code>editable</code></td> <td class="type"> <span class="param-type">boolean</span> </td> <td class="description last"></td> </tr> </tbody> </table> <dl class="details"> <dt class="tag-source">Source:</dt> <dd class="tag-source"><ul class="dummy"><li> <a href="Layer.js.html">Layer.js</a>, <a href="Layer.js.html#line25">line 25</a> </li></ul></dd> </dl> <h5>Returns:</h5> <dl> <dt> Type </dt> <dd> <span class="param-type">Promise.<void></span> </dd> </dl> <h4 class="name" id=".setSelectable"><span class="type-signature">(static) </span>setSelectable<span class="signature">(b)</span><span class="type-signature"> → {Promise.<void>}</span></h4> <div class="description"> 设置图层中对象是否可以选择。 </div> <h5>Parameters:</h5> <table class="params"> <thead> <tr> <th>Name</th> <th>Type</th> <th class="last">Description</th> </tr> </thead> <tbody> <tr> <td class="name"><code>b</code></td> <td class="type"> <span class="param-type">boolean</span> </td> <td class="description last"></td> </tr> </tbody> </table> <dl class="details"> <dt class="tag-source">Source:</dt> <dd class="tag-source"><ul class="dummy"><li> <a href="Layer.js.html">Layer.js</a>, <a href="Layer.js.html#line113">line 113</a> </li></ul></dd> </dl> <h5>Returns:</h5> <dl> <dt> Type </dt> <dd> <span class="param-type">Promise.<void></span> </dd> </dl> <h4 class="name" id=".setVisible"><span class="type-signature">(static) </span>setVisible<span class="signature">(b)</span><span class="type-signature"> → {Promise.<void>}</span></h4> <div class="description"> 设置此图层是否可见。true 表示此图层可见，false 表示图层不可见。当图层不可见时，其他所有的属性的设置将无效。 </div> <h5>Parameters:</h5> <table class="params"> <thead> <tr> <th>Name</th> <th>Type</th> <th class="last">Description</th> </tr> </thead> <tbody> <tr> <td class="name"><code>b</code></td> <td class="type"> <span class="param-type">boolean</span> </td> <td class="description last"></td> </tr> </tbody> </table> <dl class="details"> <dt class="tag-source">Source:</dt> <dd class="tag-source"><ul class="dummy"><li> <a href="Layer.js.html">Layer.js</a>, <a href="Layer.js.html#line156">line 156</a> </li></ul></dd> </dl> <h5>Returns:</h5> <dl> <dt> Type </dt> <dd> <span class="param-type">Promise.<void></span> </dd> </dl> </article> </section> </div> <nav> <h2><a href="index.html">Home</a></h2><h3>Classes</h3><ul><li><a href="BufferAnalyst.html">BufferAnalyst</a></li><li><a href="BufferAnalystParameter.html">BufferAnalystParameter</a></li><li><a href="DataDownloadService.html">DataDownloadService</a></li><li><a href="Dataset.html">Dataset</a></li><li><a href="DatasetVector.html">DatasetVector</a></li><li><a href="DatasetVectorInfo.html">DatasetVectorInfo</a></li><li><a href="Datasource.html">Datasource</a></li><li><a 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