topic Re: Map.graphics.add() not showing points on the map in ArcGIS JavaScript Maps SDK Questions

Map.graphics.add() not showing points on the map

IrfanClemson — Wed, 13 Nov 2013 18:25:02 GMT

Hi,
I have inherited an ArcGIS JavaScript API project. I am very new to this API in particular and ArcGIS in general. Currently, one part of the code is very problematic--populating the map with some query task's results. Here is a code snippet. In the debugger I can see the returned results, including geometry of individual result rows. But they never show up on the map.

  function showResults(results) {//This bounds the results into the data grid from doFind() function      var symbol = new esri.symbol.SimpleFillSymbol(esri.symbol.SimpleFillSymbol.STYLE_SOLID, new esri.symbol.SimpleLineSymbol(esri.symbol.SimpleLineSymbol.STYLE_SOLID, new dojo.Color([98,194,204]), 200), new dojo.Color([98,194,204,0.5]));       for(var i=0; i < results.features.length; i++){        //map.graphics.add(results.features);     var graphic = results.features;     graphic.setSymbol(symbol);     map.graphics.add(graphic);      }              }

What could be happening? I don't think posting thousands of line of code will help. But the debugger does show information for each row, such as:
map.graphics.graphics.geometry[0]->
- _shape=null
- type=point
- x= 283265
- y= 3955658
- symbol [object data]

and when I go to:
http://myserver/arcgis/rest/services/NPS_Location_Search/MapServer/0
then, under Drawing Info, I can see the colored dot object for Symbol.

I can give more info about how the various maps are laid out if that helps?

Thanks!
Meengla

Re: Map.graphics.add() not showing points on the map

ReneRubalcava — Wed, 13 Nov 2013 19:16:04 GMT

You mway want to make sure the results are in the proper spatial reference.
Make sure you have this in your code some where before executing the QueryTask.

query.outSpatialReference = map.spatialReference;

https://developers.arcgis.com/en/javascript/jsapi/query-amd.html#outspatialreference

This has bitten me on more than one occasion.

Re: Map.graphics.add() not showing points on the map

IrfanClemson — Thu, 14 Nov 2013 10:26:20 GMT

@Odoe,
I just put the line query.outSpatialReference = map.spatialReference;
before query.execute function and now get an error like '_3db undefined'; this error's stack seems to be from:

require({cache:{"esri/layers/TimeReference":function(){define(["dojo/_ ...

I did put a dojo.require("esri.SpatialReference"); toward the top of the javascript file--where other 'require' are but still the same error.

I will research the cause of this latest problem... If someone knows then please save me some time--it's been enough struggle with this already.

Thanks!

Re: Map.graphics.add() not showing points on the map

KaitlynnDavis — Thu, 14 Nov 2013 15:38:36 GMT

Your graphics might actually be getting added. I would recommend commenting out the map.spatialReference line that is giving you the error statement just for now and run your code, then try to zoom as far away as possible. Your point graphics might be appearing in a whole other part of the globe, in which case you then know for sure that you have a projection issue

Re: Map.graphics.add() not showing points on the map

IrfanClemson — Fri, 15 Nov 2013 11:16:49 GMT

@Kait,
Okay, I commented out the
query.outSpatialReference = map.spatialReference;//
line and then did the query and then zoomed out--and once I tried to zoom out of the extents of the US continental (the lower 48) I saw the same error as above: '_3eb undefined';
so even though the query.outSpatialReference is commented out I am getting the same error.
I tend to agree with you and @Odoe that this is some extent issue?
Thanks!

Re: Map.graphics.add() not showing points on the map

vinayb — Sat, 11 Dec 2021 08:16:49 GMT

I am getting exactly the same problem , map.graphics.add() is not showing the gaphics.
I had to change my code to from queryTask.execute() to esri.requst i am faicng this issue ever since.

my query had below condition:

var qTask= new QueryTask(queryTaskUrl);
            var query = new Query();
            query.returnGeometry = true;
            query.maxAllowableOffset = 4326;
            query.where = executableQuery;
            query.spatialRelationship = Query.SPATIAL_REL_CONTAINS;
            var spRef = new esri.SpatialReference({
                wkid: 102100
            });
            query.outSpatialReference = spRef

hence i changed my code to

var spRef = new esri.SpatialReference({
                wkid: 102100
            });
   var queryRequest = esriRequest({
      url : queryTaskUrl,
      content : {
       f : "json",
     returnGeometry: true,
     where : executableQuery,
     outSR:spRef ,
     maxAllowableOffset:4326,
     spatialRel:"esriSpatialRelContains"
      },
      callbackParamName : "callback"
     }, {usePost : true});
   handleAs : "json",
    queryRequest.then(showResults, function (error) {
     console.log("Error: ", error.message);
    });


var color="#919191";
        try {
            var symbol = new SimpleFillSymbol(SimpleFillSymbol.STYLE_SOLID, new SimpleLineSymbol(SimpleLineSymbol.STYLE_SOLID, new Color("#AED8EC"), 1), new Color(color));
            dojo.forEach(featureSet.features, function(feature){
                console.log(" iterating each feaures " +feature);
    //var graphic = new FeatureSet(feature);
    var graphic=new FeatureSet(feature);
    //var graph = new Graphic(graphic);
    graphic.setSymbol(symbol );
    console.log(" graphic feaures " +graphic.symbol.color);
    console.log(" graphic visible " +graphic.visible);
             map.graphics.add(graphic); 
            });
        } 
        catch (e) {
            console.log(" issue in iterator " + e);
        }

now map.graphics.add() does not show up

but when i change
belwo line

outSR:map.spatialReference

graphics shows but it not exactly as expected hence how do i know what is exact valuel

Re: Map.graphics.add() not showing points on the map

IrfanClemson — Fri, 15 Nov 2013 14:08:13 GMT

@VinayBa,
I tried to changed to your code but in the showResults function I am only getting field names in the results--not actual data. If I could get featuresets then maybe the symbols would at least show--as in your case.

I may have to recreate this application--it has so many problems and for someone like me who is barely getting started there are too many fires to put out during the learning process.

Thanks.

Re: Map.graphics.add() not showing points on the map

vinayb — Fri, 15 Nov 2013 15:12:35 GMT

Sorry my code is not solution to ur problem , i have same problem as yours .But for your problem check from desktop tool the projection sysrtem and spatialrefrence to use.

Re: Map.graphics.add() not showing points on the map

JeffPace — Fri, 15 Nov 2013 15:26:55 GMT

what type of geometry are you returning?

Your Subject says "points" but your code is using a fill symbol, which is polygon

Re: Map.graphics.add() not showing points on the map

IrfanClemson — Fri, 15 Nov 2013 15:26:55 GMT

Sorry my code is not solution to ur problem , i have same problem as yours .But for your problem check from desktop tool the projection sysrtem and spatialrefrence to use.

Sorry, I don't understand. What should I tell the person who published the .mxd to the server to change and republish?
Thanks,

Re: Map.graphics.add() not showing points on the map

IrfanClemson — Fri, 15 Nov 2013 15:31:40 GMT

what type of geometry are you returning?

Your Subject says "points" but your code is using a fill symbol, which is polygon

In the debug I see the geometry as type of Point.

So I guess I should change the following line?

Thanks!

var symbol = new esri.symbol.SimpleFillSymbol(esri.symbol.SimpleFillSymbol.STYLE_SOLID, new esri.symbol.SimpleLineSymbol(esri.symbol.SimpleLineSymbol.STYLE_SOLID, new dojo.Color([98,194,204]), 4), new dojo.Color([98,194,204,0.5]));

Re: Map.graphics.add() not showing points on the map

IrfanClemson — Fri, 15 Nov 2013 15:57:57 GMT

Progress! If I change the symbol to:
var symbol = new esri.symbol.SimpleMarkerSymbol().setStyle(esri.symbol.SimpleMarkerSymbol.STYLE_SOLID);

then they do show up on the map--although just about half way across the world with seemingly the same latitude and now zooming out doesn NOT show the '_3be' error I mention above...

Re: Map.graphics.add() not showing points on the map

IrfanClemson — Fri, 15 Nov 2013 16:08:40 GMT

symbols are now showing up on their proper location on the map. I had to put in this line of code again (thanks @Odoe!):
query.outSpatialReference = map.spatialReference;

Thank you all very much! I think next I will need to work out zoom map location from a result grid--but that is a different topic.

Re: Map.graphics.add() not showing points on the map

JeffPace — Fri, 15 Nov 2013 16:09:20 GMT

sp it looks like two issues, spatial reference and symbology.

IF they draw the query is good and symbology fixed

Now you just need to specify the correct outSpatialReference in the query parameters, as mentioned above

Re: Map.graphics.add() not showing points on the map

JeffPace — Fri, 15 Nov 2013 16:11:12 GMT

symbols are now showing up on their proper location on the map. I had to put in this line of code again (thanks @Odoe!):
query.outSpatialReference = map.spatialReference;

Thank you all very much! I think next I will need to work out zoom map location from a result grid--but that is a different topic.

great! if you could mark either odoe's or my post as the answer (since we each got half, doesnt matter whom) that would be appreciated (just click the check mark on the right).

Re: Map.graphics.add() not showing points on the map

IrfanClemson — Fri, 15 Nov 2013 16:21:08 GMT

great! if you could mark either odoe's or my post as the answer (since we each got half, doesnt matter whom) that would be appreciated (just click the check mark on the right).

Marked--it was really 50/50 solution between the two of you (Jeff.pace and @Odoe). Without specifying the correct symbol the map wouldn't show the symbol and without inputting the correct spatial info the symbols would show but--in Africa--which I would have missed.

Thank you both again!

Re: Map.graphics.add() not showing points on the map

KenBuja — Fri, 15 Nov 2013 16:42:43 GMT

Marked--it was really 50/50 solution between the two of you (Jeff.pace and @Odoe). Without specifying the correct symbol the map wouldn't show the symbol and without inputting the correct spatial info the symbols would show but--in Africa--which I would have missed.

Thank you both again!

In addition to the marking the post as answered, you should also use the up arrows to show which posts were helpful. This will also reward Jeff's input.