topic FeatureService with different spatialreference in ArcGIS AppStudio Questions

FeatureService with different spatialreference

RamiGhali2 — Wed, 15 Jun 2016 10:06:23 GMT

Hello,

In AppStudio, desktop edition, Is it possible to add FeatureService with a spatial reference different from the basemap's ? If yes, how can I do that ?

I tried the below QML but the featureservice doesn't show !

Map {

id: mainMap

anchors.fill: parent

extent: envelopeInitalExtent

wrapAroundEnabled: true

rotationByPinchingEnabled: true

magnifierOnPressAndHoldEnabled: false

mapPanningByMagnifierEnabled: true

zoomByPinchingEnabled: true

//INITIAL EXTENT

Envelope {

id: envelopeInitalExtent

xMax: -13630134.691272736

yMax: 4554320.7069897875

xMin: -13647294.804122735

yMin: 4535211.44991852

spatialReference: mainMap.spatialReference

}

//BASEMAP

ArcGISTiledMapServiceLayer {

url: appWindow.info.propertyValue("basemapServiceUrl", "http://server.arcgisonline.com/ArcGIS/rest/services/World_Street_Map/MapServer")

}

//CREATE A FEATURE SERVICE TABLE FROM A FEATURE SERVICE

GeodatabaseFeatureServiceTable {

id: featureServiceTable

url: "MY_FS_URL"

spatialReference: mainMap.spatialReference

}

FeatureLayer {

id: featureLayer

featureTable: featureServiceTable

}

Thanks.

Re: FeatureService with different spatialreference

LucasDanzinger — Wed, 15 Jun 2016 15:55:50 GMT

Yes, this should work. A couple of key points:

The map takes on the spatial reference of the first layer added, so if you first add a tiled map service layer that is in WKID 102100, that is what your Map will now be in (just like how the data frame in ArcMap behaves)
If you add in a FeatureLayer pointing to a Feature Service, it'll automatically request features be returned in the spatial reference of the map. So if your first layer is in 102100, and you add a feature layer pointing to a feature service in 4326, it'll request the features be returned from the server in 102100, and should then display on the map
There is no need to set the spatial reference of the feature table like you are doing in the above code. The layer will figure out what the map's spatial reference is, and automatically request features to be returned in that spatial reference.

- Luke

Re: FeatureService with different spatialreference

nakulmanocha — Wed, 15 Jun 2016 15:58:13 GMT

Yes it should work just fine unless you are adding a local (offline) geodatabase and in that case it should be in same spatial reference as the basemap. I tested the following code and works fine

ArcGISTiledMapServiceLayer {

url: "http://server.arcgisonline.com/ArcGIS/rest/services/World_Street_Map/MapServer"

}

GeodatabaseFeatureServiceTable {

id: featureServiceTable

url: "http://sampleserver6.arcgisonline.com/arcgis/rest/services/Water_Network/FeatureServer/23"

}

FeatureLayer {

id: featureLayer

featureTable: featureServiceTable

}

Re: FeatureService with different spatialreference

RamiGhali2 — Wed, 15 Jun 2016 17:07:32 GMT

Thank you Lucas for your reply.

What I found is that the FeatureService I'm trying to add is secured so, it needs authentication before being able to display it !