Point in polygon association

ChrisSmith7

A few years back, when we were evaluating ArcGIS Server, I created a geoprocessing proof-of-concept service that received a lat/long and returned polygon IDs containing said point. There's now a need to actually use this feature, and within a high-volume environment, no less, so I've been looking to redevelop properly. There appear to be a few ways to go about this - Simple enough! However, what's the fastest, most performant way?

I have a map service containing a few thousand overlapping polygons (just need the layer to make the association) - I would like to send an x,y point (lat/long) and return a list of IDs from the map service.

I came across this thread:

How to find the polygon containing a given coordinate using ArcGIS Geometry Service? - Geographic Information Systems St…

Should I go about it this way, or should I use GeometryService?

ChrisSmith7

Ok, so, with a fresh brain, I realized I was going about this the wrong way. I had to ensure query capabilities were enabled for the layer (curiously, they had been disabled on my targeted service) - everything I needed to do was available for me to hit from asp.net by loading the service URL with querystring params:

http://yourGISserver.com/arcgis/rest/services/base_services/yourMapLayer/MapServer/0/query?where=&

text=&

objectIds=&

time=&

geometry=%7B%22x%22+%3A+-104.53%2C+%22y%22+%3A+34.74%7D%0D%0A&

geometryType=esriGeometryPoint&

inSR=4326&

spatialRel=esriSpatialRelWithin&relationParam=&

outFields=yourTargetField&

returnGeometry=false&

maxAllowableOffset=&

geometryPrecision=&

outSR=&

returnIdsOnly=false&

returnCountOnly=false&

orderByFields=&

groupByFieldsForStatistics=&

outStatistics=&

returnZ=false&

returnM=false&

gdbVersion=&

returnDistinctValues=false&

returnTrueCurves=false&

resultOffset=&

resultRecordCount=&

f=pjson

This returns a JSON object with the attributes I need!

{
"displayFieldName": "DisplayField",
"fieldAliases": {
  "yourTargetField": "yourTargetField"
},
"fields": [
  {
  "name": "yourTargetField",
  "type": "esriFieldTypeString",
  "alias": "yourTargetField",
  "length": 6
  }
],
"features": [
  {
  "attributes": {
    "yourTargetField": "FOO123"
  }
  },
  {
  "attributes": {
    "yourTargetField": "BAR321"
  }
  },
  {
  "attributes": {
    "yourTargetField": "BIZ789"
  }
  },
  {
  "attributes": {
    "yourTargetField": "BAT987"
  }
  }
]
}