import BufferAnalysis from 'kqwebmap-project/src_en/query/BufferAnalysis.js'

public class | source

BufferAnalysis

Buffer analysis of the specific graphics from the server.

See:

./manual/query.html

Example:

var buffer_analysis = KQ.Query.BufferAnalysis.getInstance();
console.log(buffer_analysis);
try {
 var options = {
   url: 'http://172.16.0.106:8699/KQGis/rest/services',
   data: '{"type":"Polygon","coordinates":[[[104.94105475249448,29.97276304931208],[104.94105475249448,30.028839993667194],[105.00551176529433,30.028839993667194],[105.00551176529433,29.97276304931208],[104.94105475249448,29.97276304931208]]]}',
   geoSRS: 'EPSG:4326',
   outSRS: 'EPSG:4326',
   sideType: 'outer',
   radius: 10000.0,
 };

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

     var data = buffer_analysis.data();
     console.log('buffer analysis data.length:' + data.length);

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

Static Method Summary

Static Public Methods
public static	getInstance(): BufferAnalysis Get instance object (Singleton mode)

Method Summary

Public Methods
public	data(): Object[] Get data
public	errorMsg(): String Get last error message
public	isLastError(): Boolean Whether server return error
public	queryAsync(options: Object, function_good: function(): null, function_error: function(): null): Promise<TResult> Buffer analysis of the specific graphics from the server.

Static Public Methods

public static getInstance(): BufferAnalysis source

Get instance object (Singleton mode)

Return:

BufferAnalysis

Public Methods

public data(): Object[] source

Get data

Return:

Object[]

public errorMsg(): String source

Get last error message

Return:

String

public isLastError(): Boolean source

Whether server return error

Return:

Boolean

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

Buffer analysis of the specific graphics from the server.

Params:

Name	Type	Attribute	Description
options	Object		Buffer analysis options
options.data	String		The graphics object for transform, the type is GeometryCollection or Polygon GeoJson object
options.geoSRS	String		Spatial reference of the graphics coordinate
options.outSRS	String		Target Spatial reference
options.sideType	String		Buffer direction (outer:outer buffer, inner:inner buffer, left:left buffer, right:right buffer, both:both buffer)
options.radius	String		Buffer radius, unit:meter, value range(0,1000000)
function_good	function(): null		The function will run after querying successfully.
function_error	function(): null		The function will run after querying unsuccessfully.

Return:

Promise<TResult>