Query a raster for pixel value from ImageServer/AGOL

Vidar

Hi

 

I have a raster published in AGOL and it’s URL is like this https://tiledimageservices1.arcgis.com/IB7Kf2F8K18M2LKr/arcgis/rest/services/fooRaster/ImageServer

 

I want to access the raster via the Pro SDK but NOT add it to the map, and the only example code I can find is below:

 

string dataSoureUrl = @”https://tiledimageservices1.arcgis.com/IB7Kf2F8K18M2LKr/arcgis/rest/services/fooRaster/ImageServer”;

 

ImageServiceLayer rasterLayer = null;

 

await QueuedTask.Run(() =>

{

       // Create a layer based on the url. In this case the layer we are creating is an image service layer.

       rasterLayer = (ImageServiceLayer)LayerFactory.Instance.CreateLayer(new Uri(dataSoureUrl), myMap);

});

 

 

The reason I don’t want to add it to the map – is because I am doing a “drill down” on about 10 rasters based on an x,y coordinate the user has selected on the map (with some background mapping of the world) – and extract the pixel value at that coordinate. It’s too much unnecessary overhead to load the rasters into Pro and do the analysis after the event.

 

Is there a way to query a pixel value in memory based on the an x,y location??

 

Vidar

Is there anyone from ESRI who can give an official line on this - at the moment my add-in behaviour is horrible and clunky - I am having to add 10 rasters to my map before I can do my queries which is taking an inordinate amount of time and it looks clunky to the user. Plus I have to clean up and remove the layers after I have queried my rasters. It's just not an acceptable user experience.