topic Re: Not all features from a map service are displaying in ArcGIS Online Questions

Not all features from a map service are displaying

AndrewEdmonds — Thu, 19 Jul 2012 18:34:24 GMT

I have created two ArcGIS Online webmaps using data from a WMS my organization publishes.

http://www.arcgis.com/explorer/?open=18e89fb2b78144fbb31087e1a56f77f5
http://www.arcgis.com/explorer/?open=5085e0e78e5b4928a7bc57019b9a1879

The former draws from the WMS and correctly displays all features. The latter draws from the specific layers (ie, http://gis.ncdcr.gov/ArcGIS/rest/services/NC_National_Register_Mobile/MapServer/0) and does NOT display all features.

I thought this problem might be related to the 1000 feature maximum import to shapefiles described in this thread, but the solution listed there is to create a map service.

So, why does the second webmap limit my displayed features? The only difference I can see is how the data are brought in.

Re: Not all features from a map service are displaying

MikeMinami — Thu, 19 Jul 2012 20:45:40 GMT

In one web map, you've added the individual layers of an ArcGIS Server map service to the web map. By doing so, you are effectively accessing the layers like a feature service. The web map sends a query to the service to retrieve the geometry and attributes of the features and the client application draws them. So it works identically to how a feature service works and is limited to the number of features the client can draw.

In your other web map, you've added the entire map service. In this case, the web map sends a request to the service and the service draws all the layers and creates an image representation that the client then displays, sometimes transparently.

Make sense?

Mike

Re: Not all features from a map service are displaying

AndrewEdmonds — Mon, 23 Jul 2012 14:21:20 GMT

Thanks, that makes sense.