GNServer(几何网络分析)扩展ArcGIS Rest—GNServer的Schema
资源
语法：http://<s-url>/ext/GNServer，
作用：返回Geometricnetwork包含的所有图层
响应：
{
"GeometricNetwork Layers" : [
{
"fcname" :"Sewer_Junctions",
"fcid" :18
},
{
"fcname" :"sewerpt_point",
"fcid" :6
}
]
}
操作
语法：
http://<s-url> /ext/GNServer/Trace?JunctionFlags=&EdgeFlags=&
JunctionBarriers=&EdgeBarriers=&TraceType=&DisableLayers=&EdgeOutFields=&JunctionOutFields=
作用：设施网络分析
参数：
JunctionFlags，
{
"features" : [
{
"geometry" : {"x" :-122.4079, "y" : 37.78356},
"attributes" : {"Name" :"From", "RouteName" : "Route A"}
},
{
"geometry" : {"x" :-122.404, "y" : 37.782},
"attributes" : {"Name" :"To", "RouteName" : "Route A"}
}
]
}
EdgeFlags，
{
"features" : [
{
"geometry" : {"x" :-122.4079, "y" : 37.78356},
"attributes" : {"Name" :"From", "RouteName" : "Route A"}
},
{
"geometry" : {"x" :-122.404, "y" : 37.782},
"attributes" : {"Name" :"To", "RouteName" : "Route A"}
}
]
}
JunctionBarriers，
{
"features" : [
{
"geometry" : {"x" :-122.4079, "y" : 37.78356},
"attributes" : {"Name" :"From", "RouteName" : "Route A"}
},
{
"geometry" : {"x" :-122.404, "y" : 37.782},
"attributes" : {"Name" :"To", "RouteName" : "Route A"}
}
]
}
EdgeBarriers，
{
"features" : [
{
"geometry" : {"x" :-122.4079, "y" : 37.78356},
"attributes" : {"Name" :"From", "RouteName" : "Route A"}
},
{
"geometry" : {"x" :-122.404, "y" : 37.782},
"attributes" : {"Name" :"To", "RouteName" : "Route A"}
}
]
}
TraceType，分析的类型，可能的值FindCommon Ancestors、Find Connected、Find Loops、Find Disconnected、Find Path Upstream、Find Path、Trace Downstream、Find Upstream Accumulation、Trace Upstream
FindCommon Ancestors
DisableLayers，不参与运算的图层，充当barriers
fcid1,fcid 2,fcid 3
EdgeOutFields，edge返回的字段
OBJECTID,SEWER_ID,LINE_TYPE,LINETYPE_CODE
JunctionOutFields，junction返回的字段
OBJECTID,SEWERPT_ID,NODE_TYPE
响应：
{
"Edges" : [
{
"geometry" : {
"paths" : [
[
[
557518.23921400006,
43369.827911916669
],
[
557508.74988066661,
43374.820245249997
]
]
]
},
"attributes" : {
"OBJECTID" :"6831",
"SEWER_ID" : "660",
"LINE_TYPE" : "LA",
"LINETYPE_CODE" :"0"
}
},
{
"geometry" : {
"paths" : [
[
[
557485.36788066663,
43334.35324525
],
[
557518.23921400006,
43369.827911916669
]
]
]
},
"attributes" : {
"OBJECTID" :"6879",
"SEWER_ID" : "909",
"LINE_TYPE" : "MG",
"LINETYPE_CODE" :"1"
}
}
]
"Junctions": [
{
"geometry" : {
"x" : 557137.62488066661,
"y" : 42729.242245249996
},
"attributes" : {
"OBJECTID" :"7555",
"SEWERPT_ID" :"2076",
"NODE_TYPE" : "MH"
}
},
{
"geometry" : {
"x" : 557239.29388066672,
"y" : 42838.977578583334
},
"attributes" : {
"OBJECTID" :"7398",
"SEWERPT_ID" :"470",
"NODE_TYPE" : "OT"
}
}
]
}