buffer接口
URL: |
http:// <bufferServer-URL> / buffer |
父资源: |
bufferServer |
[ 服务说明 ]
buffer接口提供计算对象缓冲区的功能，接收点，线，面等几何对象，返回缓冲分析后的对象。
[ 参数说明 ]
| 参数 | 参数说明 |
|---|---|
| format |
参数作用：指定操作结果返回格式 取值范围：html | json| png，该参数默认值为html |
| layer |
参数作用：指定分析的图层名称 取值范围：2DM工程中的图层 |
| distance |
参数作用：缓冲分析半径 取值范围：单级缓冲，例如：2.0；多级缓冲，但不能超过6级，例如2.0，3.0,4.0 |
| quadrantsegments |
参数作用： 取值范围：默认值8 |
| endstyle |
参数作用： 取值范围： CAP_ROUND|CAP_FLAT|CAP_SQUARE |
| joinstyle |
参数作用： 取值范围：JSON_ROUND|JOIN_MITRE|JOIN_BEVEL |
| mitrelimit |
参数作用： 取值范围：默认值0 |
| geo |
参数作用：指定缓冲分析空间范围 取值范围：geojson 格式 |
| srsin |
参数作用：指定缓冲分析空间参考 取值范围：例如：EPSG:4326 |
| where |
参数作用：属性过滤 取值范围：标准的sql语句 |
| srsout |
参数作用：指定数据叠加操作后的输出的坐标系统 取值范围：例如：EPSG:4326 |
| dissolvetype |
参数作用：指定缓冲后的图形是否融合 取值范围：none | all |
| bbox |
参数作用：当format = image/png,指定输出地理范围 取值范围：minx,miny,maxx,maxy |
| height |
参数作用：当format = image/png,指定输出图片高度 取值范围：整数 <=4096 |
| style |
参数作用：指定输出图层的渲染样式 取值范围：json例如：{"linestyle":{"linewidth":0.5,"alpha":125,"color":"220,20,60"},"fillstyle":{"alpha":100,"color":"25,225,112"}} |
| width |
参数作用：当format = image/png,指定输出图片宽度 取值范围：整数 <=4096 |
[ 示例 ]
URL地址示例：
http://127.0.0.1:8099/newmap/rest/services/samples/china/SAServer/buffer?&layer=首都和省级行政中心&distance=2&srsin=&srsout=&dissolvetype=none&where=&style=&format=json
[ 返回结果 ]
buffer操作成功时的返回结果示例 ：
{
"LayerName":"首都和省级行政中心_Buffer",
"SpatialReference":"EPSG:4326",
"Fields":[
"Features":{
}"SpatialReference":"EPSG:4326",
"Fields":[
{"name":"ValueId","type":"Double"},{"name":"PolyId","type":"Double"},{"name":"AREA","type":"Double"},{"name":"PERIMETER","type":"Double"},{"name":"GBCODE","type":"Int32"},{"name":"NAME","type":"String"},{"name":"ADCODE93","type":"Int32"},{"name":"ADCODE99","type":"Int32"},{"name":"ADCLASS","type":"Int32"},{"name":"PINYIN","type":"String"}
],"Features":{
"Type":"FeatureCollection",
"Features":[{
"Features":[{
"type":"feature","fid":"0",
"properties":
}"properties":
{"ValueId":"61","PolyId":"0","AREA":"0","PERIMETER":"0","GBCODE":"31010","NAME":"北京","ADCODE93":"1101","ADCODE99":"110100","ADCLASS":"1","PINYIN":"Beijing"},
"geometry":{ "type": "Polygon",
"coordinates": [ [ [ 118.38094, 39.923615 ], [ 118.34251056080646, 39.533434355967742 ], [ 118.22869906502257, 39.158248135269822 ], [ 118.04387922460509, 38.812474533960795 ], [ 117.79515356237309, 38.509401437626906 ], [ 117.4920804660392, 38.260675775394908 ], [ 117.14630686473018, 38.075855934977426 ], [ 116.77112064403225, 37.962044439193541 ], [ 116.38094, 37.923615 ], [ 115.99075935596774, 37.962044439193534 ], [ 115.61557313526981, 38.075855934977426 ], [ 115.26979953396079, 38.260675775394908 ], [ 114.9667264376269, 38.509401437626899 ], [ 114.71800077539491, 38.812474533960788 ], [ 114.53318093497742, 39.158248135269815 ], [ 114.41936943919353, 39.533434355967735 ], [ 114.38094, 39.923615 ], [ 114.41936943919353, 40.313795644032247 ], [ 114.53318093497742, 40.688981864730174 ], [ 114.7180007753949, 41.034755466039194 ], [ 114.96672643762689, 41.33782856237309 ], [ 115.26979953396078, 41.586554224605081 ], [ 115.61557313526981, 41.77137406502257 ], [ 115.99075935596773, 41.885185560806455 ], [ 116.38094, 41.923615 ], [ 116.77112064403225, 41.885185560806462 ], [ 117.14630686473016, 41.771374065022577 ], [ 117.4920804660392, 41.586554224605095 ], [ 117.79515356237309, 41.337828562373097 ], [ 118.04387922460508, 41.034755466039208 ], [ 118.22869906502257, 40.688981864730181 ], [ 118.34251056080646, 40.313795644032261 ], [ 118.38094, 39.923615 ] ] ] }
}]"coordinates": [ [ [ 118.38094, 39.923615 ], [ 118.34251056080646, 39.533434355967742 ], [ 118.22869906502257, 39.158248135269822 ], [ 118.04387922460509, 38.812474533960795 ], [ 117.79515356237309, 38.509401437626906 ], [ 117.4920804660392, 38.260675775394908 ], [ 117.14630686473018, 38.075855934977426 ], [ 116.77112064403225, 37.962044439193541 ], [ 116.38094, 37.923615 ], [ 115.99075935596774, 37.962044439193534 ], [ 115.61557313526981, 38.075855934977426 ], [ 115.26979953396079, 38.260675775394908 ], [ 114.9667264376269, 38.509401437626899 ], [ 114.71800077539491, 38.812474533960788 ], [ 114.53318093497742, 39.158248135269815 ], [ 114.41936943919353, 39.533434355967735 ], [ 114.38094, 39.923615 ], [ 114.41936943919353, 40.313795644032247 ], [ 114.53318093497742, 40.688981864730174 ], [ 114.7180007753949, 41.034755466039194 ], [ 114.96672643762689, 41.33782856237309 ], [ 115.26979953396078, 41.586554224605081 ], [ 115.61557313526981, 41.77137406502257 ], [ 115.99075935596773, 41.885185560806455 ], [ 116.38094, 41.923615 ], [ 116.77112064403225, 41.885185560806462 ], [ 117.14630686473016, 41.771374065022577 ], [ 117.4920804660392, 41.586554224605095 ], [ 117.79515356237309, 41.337828562373097 ], [ 118.04387922460508, 41.034755466039208 ], [ 118.22869906502257, 40.688981864730181 ], [ 118.34251056080646, 40.313795644032261 ], [ 118.38094, 39.923615 ] ] ] }
buffer操作失败时的返回结果示例 ：
{
"error":"无法解析传入的Geometry"
}
"error":"无法解析传入的Geometry"
}