import SummaryAnalysis from 'kqwebmap-project/src/query/SummaryAnalysis.js'

public class | source

SummaryAnalysis

从服务器中对指定的图层进行叠置分析

See:

./manual/query.html

Example:

var overlay_analysis = KQ.Query.OverlayAnalysis.getInstance();
console.log(overlay_analysis);
try {
  var options = {
    url: 'http://172.16.1.157:8699/KQGis/rest/services/zy',
    layerId: 145,
    pageSize: '200',
    sr: '',
    geometry: '{"type":"Polygon","coordinates":[[[104.94105475249448,29.97276304931208],[104.94105475249448,30.028839993667194],[105.00551176529433,30.028839993667194],[105.00551176529433,29.97276304931208],[104.94105475249448,29.97276304931208]]]}',
    fields: 'OBJECTID,XZBM,BSM,YSDM,JXLX,JXXZ,JXSM,BGRQ',
    f: 'json',
    where: '',
  };

  overlay_analysis.queryAsync(options,
    function query_good () {
      console.log('query_good');

      var data = overlay_analysis.data();
      console.log('overlay analysis data.length:' + data.length);

      data.forEach(function (d) {
        console.log(d.properties);
      })
    },
    function query_error () {
      console.log('query_error');
    });
}
catch (e) {
  console.log('catch error:' + e);
}

Static Method Summary

Static Public Methods
public static	getInstance(): SummaryAnalysis 获取实例对象 (单例模式)

Method Summary

Public Methods
public	data(): Object[] 获取数据
public	errorMsg(): String 获取最后的错误信息
public	isLastError(): Boolean 服务器是否返回了错误
public	queryAsync(options: Object, function_good: function(): null, function_error: function(): null): Promise<TResult> 从服务器中对指定的图层进行汇总分析

Static Public Methods

public static getInstance(): SummaryAnalysis source

获取实例对象 (单例模式)

Return:

SummaryAnalysis

Public Methods

public data(): Object[] source

获取数据

Return:

Object[]

public errorMsg(): String source

获取最后的错误信息

Return:

String

public isLastError(): Boolean source

服务器是否返回了错误

Return:

Boolean

public queryAsync(options: Object, function_good: function(): null, function_error: function(): null): Promise<TResult> source

从服务器中对指定的图层进行汇总分析

Params:

Name	Type	Attribute	Description
options	Object		汇总分析的配置参数
options.url	String		服务器的url地址
options.startindex	Number		请求返回结果的起始索引
options.layerId	String		进行查询的图层ID
options.reqCount	Number		请求返回结果的最大记录数
options.geoSRS	String		传入图形的空间参考
options.areaSRS	String		输出结果图形的空间参考
options.geometry	String		查询范围的坐标
options.groupfields	String		分组字段，如果是多个字段，用逗号间隔
options.summaryfields	String		汇总字段，如果是多个字段，用逗号间隔
options.summarytypes	String		汇总类型，sum:求和 min：最小值 max：最大值 avg：平均值 count:计数
options.isOverlap	String		是否需要进行叠置分析后再计算面积
options.where	String		查询条件，sql语句中的where子句
function_good	function(): null		查询成功后执行的函数
function_error	function(): null		查询失败后执行的函数

Return:

Promise<TResult>