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How can I get the feature withn a service area?

ShreyPrasad

hi,

I am able to create the service area using REST, but now I want to get all the feature, from all the feature layers , which are covered in that Service area. After getting those feature also want to export the feature to a shape file.

Any help on this will be appreciated.

Thanks

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nicogis

A solution is creating a gp that it creates two output a service area (you draw on client) and zip file with shapefile. Then you call from client gp.

ShreyPrasad

A solution is creating a gp that it creates two output a service area (you draw on client) and zip file with shapefile. Then you call from client gp.

ciava.at
Thank for the reply.But I was using SOE for the same. But while passingthe the polygon XY to the REST(vertices more than 50 ) it was showing error No 404. If i send less vertices, say10 ,& then intersecting the service area polygon with the desired feature class to get the features out of it, I am not getting any features.

can you please guide me on this

nicogis

for error when you call 'more than 50' do you use in esri.request option: usePost?

var requestHandle = esri.request({ 
    url: url.path, 
    content: url.query, 
   ..
 }, {usePost:true});

for intersect: can you post part of code for soe or give me futher details what do you do in soe?

ShreyPrasad

for error when you call 'more than 50' do you use in esri.request option: usePost?
var requestHandle = esri.request({ 
    url: url.path, 
    content: url.query, 
   ..
 }, {usePost:true});
for intersect: can you post part of code for soe or give me futher details what do you do in soe?

Thanks ciava

Below is the code which I am using hope that will be sufficent for you.

//For Javascript
function ProcessCluster(TempServicePoly) {
      var i = 0;
      var PolygonText = "";
      if (TempServicePoly != null) {
          GlobalGeom = TempServicePoly;
          for (i = 0; i < GlobalGeom.geometry.rings[0].length; i++) {
              PolygonText += GlobalGeom.geometry.rings[0][0] + "," + GlobalGeom.geometry.rings[0][1] + "|";
          }


        // alert(PolygonText);
               var content = {
              //'text': point.x + " " + point.y,
              'text': PolygonText,
              'f': "json"
          };
          // Do the SOE query.

          esri.request({
              url: soeURL,
              content: content,
               usePost: true,
              callbackParamName: "callback",
              load: function(response) {
                  listFeatureDetails(response);

              },
              error: function(error) {
                  console.log(error);
              }
          });
      }
}
-----------------------------------------------------------
//SOE Code

        private byte[] ServiceAreaIntersectHandler(System.Collections.Specialized.NameValueCollection boundVariables,
        ESRI.ArcGIS.SOESupport.JsonObject operationInput,
        string outputFormat,
        string requestProperties,
        out string responseProperties)
        {

            object missing = Type.Missing;

            responseProperties = null;

            // Deserialize location
            string Polygonstring;
            if (!operationInput.TryGetString("text", out Polygonstring))
                throw new ArgumentNullException("text");
            IPointCollection pPolygonofPoints = new PolygonClass();
            string[] pointarray = Polygonstring.TrimEnd('|').Split('|');
            for (int i = 0; i < pointarray.Length; i++)
            {
                if (pointarray.Trim() != "")
                {
                    IPoint pPoint = new PointClass();
                    pPoint.X = Convert.ToDouble(pointarray.Split(',')[0]);
                    pPoint.Y = Convert.ToDouble(pointarray.Split(',')[1]);
                    pPolygonofPoints.AddPoint(pPoint, ref missing, ref missing);
                }

            }
            IPolygon QueryPolygon = pPolygonofPoints as IPolygon;

            if (QueryPolygon == null)
                throw new ArgumentException("SpatialQuerySOEREST: invalid QueryPolygon", "QueryPolygon");

            IMapServer3 mapServer = (IMapServer3)serverObjectHelper.ServerObject;
            string mapName = mapServer.DefaultMapName;

                       IMapServerDataAccess dataAccess = (IMapServerDataAccess)mapServer;

            // Get access to the source feature class
            m_fcToQuery = (IFeatureClass)dataAccess.GetDataSource(mapName, 0);

                      clsServiceAreaIntsection objclsServiceAreaIntsection = new clsServiceAreaIntsection();
            string outFeatureString = objclsServiceAreaIntsection.ReturnSelectedFeatures(QueryPolygon,m_fcToQuery,out ValidateString);



                     JsonObject resultJsonObject = new JsonObject();
                   resultJsonObject.AddString("OutputVal", outFeatureString);

            // Get byte array of json and return results
            byte[] result = Encoding.UTF8.GetBytes(resultJsonObject.ToJson());
            return result;
        }
----------------------------------------------

//SOE Class Code
   public string ReturnSelectedFeatures(IPolygon Poly, IFeatureClass pQueryFC, out string ValidationStatus)
        {

            string outReturnString = string.Empty;
            ValidationStatus = string.Empty;
            ITopologicalOperator pTopoLogicalOpt = null;
            ISpatialFilter pSF = new SpatialFilterClass();
            IFeature pFeature = null;
            string ValueStroe = string.Empty;
            string CurrentOID = string.Empty;
            string Building_Name = string.Empty;
            try
            {
                pSF.Geometry = Poly;
                pSF.SpatialRel = ESRI.ArcGIS.Geodatabase.esriSpatialRelEnum.esriSpatialRelIntersects;
                IFeatureCursor resultsFeatureCursor = pQueryFC.Search(pSF, true);
                pFeature = resultsFeatureCursor.NextFeature();           <-------// Always this feature is null
                while (pFeature != null)
                {
                    CurrentOID = pFeature.get_Value(pFeature.Fields.FindField("OBJECTID")).ToString().Trim();
                    Building_Name = pFeature.get_Value(pFeature.Fields.FindField("Building_n")).ToString().Trim();
                    ValueStroe = CurrentOID + "," + Building_Name + "|" + ValueStroe;
                    pFeature = resultsFeatureCursor.NextFeature();
                }

                outReturnString = ValueStroe;
                return outReturnString;
            }
            catch (Exception ex)
            {
                return ex.ToString();
                throw ex;
            }
        }

--------------------------
Can i directly pass the Feature to SOE in form of JSON and convert that JSON to the Feature in SOE ..?

After using the {USEPOST:TRUE }then also the result is same..

nicogis

usePost is in options parameter, not in request: (see http://help.arcgis.com/en/webapi/javascript/arcgis/help/jsapi/namespace_esri.htm)

esri.request({
url: soeURL,
content: content,
callbackParamName: "callback",
load: function(response) {
listFeatureDetails(response);
},
error: function(error) {
console.log(error);
}
}, {usePost: true});

From soe you can serialize polygon (arcobjects) and send to client deserialized (json):


JsonObject jsonPolygon;
            if (!operationInput.TryGetJsonObject("myNameParameter", out jsonPolygon))
                throw new ArgumentNullException("myNameParameter");
            //deserialize
            IPolygon pg= Conversion.ToGeometry(jsonPoint, esriGeometryType.esriGeometryPolygon) as IPolygon;
....

            //serialize polygon (for example)
            JsonObject jsonObjectGeometry = Conversion.ToJsonObject(myPolygon);
            
            JsonObject resultJsonObject = new JsonObject();
            resultJsonObject.AddJsonObject("geometry", jsonObjectGeometry);
            ...

            // Get byte array of json and return results
            byte[] result = Encoding.UTF8.GetBytes(resultJsonObject.ToJson());
            return result;

from client send polygon in esri.request

    var polygon = dojo.toJson(mygeometry.toJson())

from client deserialize polygon

    var polygon = new esri.geometry.Polygon(polygonJson);

ShreyPrasad

Tried using the thing you suggested but still the 404 page not found, service unavailable is continuing. Whenever I try to send small feature in SOE it is showing the following error "Unable to load /arcgisserver/apis/javascript/proxy/proxy.ashx?http://xyz.xyz.xyz.xyz/ArcGIS/rest/services/Page_Laout_Test/MapServer/exts/SimpleRESTSOE/(FunctionName) status:12031. and if i directly put the values on the REST endpoint it is howing the following message

{
"error" :
{
    "code" : 500,
    "message" : "An unexpected error occurred processing the request.",
    "details" : []
}
}

nicogis

you try debugging the soe.
- start service with soe capabilites
- in vs set a break point and attach process to soc managed ( see debugging soes http://help.arcgis.com/en/sdk/10.0/arcobjects_net/conceptualhelp/0001/0001000009st000000.htm )
-run code javascript
-in .net the execution stop in break point

ShreyPrasad

How can I debug the application from the Javascript . I tried to put breakpoint in the SOE but of no use. Currently whenever i am running the application I am getting the following error inthe javascript code. "Unable to load /arcgisserver/apis/javascript/proxy/proxy.ashx?http://xyz.xyz.xyz.xyz/ArcGIS/rest/services/Test/MapServer/exts/SimpleRESTSOE/Generation status:12030" - this is when I am going through the Javascript page . I am not able to debug the SOE. How can I do it I have tried many time but it was of no use.

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