private async void Initialize()
{
// Create a map with a streets basemap.
Map map = new Map(Basemap.CreateStreets());
// Get the file name for the local raster dataset.
string filepath = GetRasterPath();
// Load the raster file
Raster rasterFile = new Raster(filepath);
// Create a new raster layer to show the image.
_rasterLayer = new RasterLayer(rasterFile);
try
{
// Once the layer has loaded, enable the button to change the renderer.
await _rasterLayer.LoadAsync();
ApplyRgbRendererButton.IsEnabled = true;
// Create a viewpoint with the raster's full extent.
Viewpoint fullRasterExtent = new Viewpoint(_rasterLayer.FullExtent);
// Set the initial viewpoint for the map.
map.InitialViewpoint = fullRasterExtent;
// Add the layer to the map.
map.OperationalLayers.Add(_rasterLayer);
// Add the map to the map view.
MyMapView.Map = map;
// Add available stretch types to the combo box.
StretchTypeComboBox.Items.Add("Min Max");
StretchTypeComboBox.Items.Add("Percent Clip");
StretchTypeComboBox.Items.Add("Standard Deviation");
// Select "Min Max" as the stretch type.
StretchTypeComboBox.SelectedIndex = 0;
// Create a range of values from 0-255.
IList minMaxValues = Enumerable.Range(0, 256).ToList();
// Fill the min and max red combo boxes with the range and set default values.
MinRedComboBox.ItemsSource = minMaxValues;
MinRedComboBox.SelectedItem = 0;
MaxRedComboBox.ItemsSource = minMaxValues;
MaxRedComboBox.SelectedItem = 255;
// Fill the min and max green combo boxes with the range and set default values.
MinGreenComboBox.ItemsSource = minMaxValues;
MinGreenComboBox.SelectedItem = 0;
MaxGreenComboBox.ItemsSource = minMaxValues;
MaxGreenComboBox.SelectedItem = 255;
// Fill the min and max blue combo boxes with the range and set default values.
MinBlueComboBox.ItemsSource = minMaxValues;
MinBlueComboBox.SelectedItem = 0;
MaxBlueComboBox.ItemsSource = minMaxValues;
MaxBlueComboBox.SelectedItem = 255;
// Fill the standard deviation factor combo box and set a default value.
IEnumerable <int> wholeStdDevs = Enumerable.Range(1, 10);
List <double> halfStdDevs = wholeStdDevs.Select(i => (double)i / 2).ToList();
StdDeviationFactorComboBox.ItemsSource = halfStdDevs;
StdDeviationFactorComboBox.SelectedItem = 2.0;
}
catch (Exception e)
{
await Application.Current.MainPage.DisplayAlert("Error", e.ToString(), "OK");
}
}
private async void Initialize()
{
// Create new map with the streets basemap
Map myMap = new Map(Basemap.CreateStreets());
// Create a Uri to the image service raster (NOTE: iOS applications require the use of Uri's to be https:// and not http://)
Uri myUri = new Uri("https://sampleserver6.arcgisonline.com/arcgis/rest/services/NLCDLandCover2001/ImageServer");
// Create new image service raster from the Uri
ImageServiceRaster myImageServiceRaster = new ImageServiceRaster(myUri);
try
{
// Load the image service raster
await myImageServiceRaster.LoadAsync();
// NOTE: This is the ASCII text for actual raw JSON string:
// ========================================================
//{
// "raster_function_arguments":
// {
// "z_factor":{"double":25.0,"type":"Raster_function_variable"},
// "slope_type":{"raster_slope_type":"none","type":"Raster_function_variable"},
// "azimuth":{"double":315,"type":"Raster_function_variable"},
// "altitude":{"double":45,"type":"Raster_function_variable"},
// "type":"Raster_function_arguments",
// "raster":{"name":"raster","is_raster":true,"type":"Raster_function_variable"},
// "nbits":{"int":8,"type":"Raster_function_variable"}
// },
// "raster_function":{"type":"Hillshade_function"},
// "type":"Raster_function_template"
//}
// Define the JSON string needed for the raster function
string theJSON_String =
@"{
""raster_function_arguments"":
{
""z_factor"":{ ""double"":25.0,""type"":""Raster_function_variable""},
""slope_type"":{ ""raster_slope_type"":""none"",""type"":""Raster_function_variable""},
""azimuth"":{ ""double"":315,""type"":""Raster_function_variable""},
""altitude"":{ ""double"":45,""type"":""Raster_function_variable""},
""type"":""Raster_function_arguments"",
""raster"":{ ""name"":""raster"",""is_raster"":true,""type"":""Raster_function_variable""},
""nbits"":{ ""int"":8,""type"":""Raster_function_variable""}
},
""raster_function"":{ ""type"":""Hillshade_function""},
""type"":""Raster_function_template""
}";
// Create a raster function from the JSON string using the static/Shared method called: RasterFunction.FromJson(json as String)
RasterFunction myRasterFunction = RasterFunction.FromJson(theJSON_String);
// NOTE: Depending on your platform/device, you could have alternatively created the raster function via a JSON string that is contained in a
// file on disk (ex: hillshade_simplified.json) via the constructor: Esri.ArcGISRuntime.Rasters.RasterFunction(path as String)
// Get the raster function arguments
RasterFunctionArguments myRasterFunctionArguments = myRasterFunction.Arguments;
// Get the list of names from the raster function arguments
IReadOnlyList <string> myRasterNames = myRasterFunctionArguments.GetRasterNames();
// Apply the first raster name and image service raster in the raster function arguments
myRasterFunctionArguments.SetRaster(myRasterNames[0], myImageServiceRaster);
// Create a new raster based on the raster function
Raster myRaster = new Raster(myRasterFunction);
// Create a new raster layer from the raster
RasterLayer myRasterLayer = new RasterLayer(myRaster);
// Add the raster layer to the maps layer collection
myMap.Basemap.BaseLayers.Add(myRasterLayer);
// Assign the map to the map view
MyMapView.Map = myMap;
// Get the service information (aka. metadata) about the image service raster
ArcGISImageServiceInfo myArcGISImageServiceInfo = myImageServiceRaster.ServiceInfo;
// Zoom the map to the extent of the image service raster (which also the extent of the raster layer)
await MyMapView.SetViewpointGeometryAsync(myArcGISImageServiceInfo.FullExtent);
// NOTE: The sample zooms to the extent of the ImageServiceRaster. Currently the ArcGIS Runtime does not
// support zooming a RasterLayer out beyond 4 times it's published level of detail. The sample uses
// MapView.SetViewpointCenterAsync() method to ensure the image shows when the app starts. You can see
// the effect of the image service not showing when you zoom out to the full extent of the image and beyond.
}
catch (Exception e)
{
await Application.Current.MainPage.DisplayAlert("Error", e.ToString(), "OK");
}
}
private async void Initialize()
{
try
{
// Create the map view.
_myMapView.Map = new Map(Basemap.CreateStreets());
// Create the text to speech object.
_textToSpeech = new TextToSpeech(this, this, "com.google.android.tts");
// Create the route task, using the routing service.
_routeTask = await RouteTask.CreateAsync(_networkGeodatabasePath, "Streets_ND");
// Get the default route parameters.
_routeParams = await _routeTask.CreateDefaultParametersAsync();
// Explicitly set values for parameters.
_routeParams.ReturnDirections = true;
_routeParams.ReturnStops = true;
_routeParams.ReturnRoutes = true;
_routeParams.OutputSpatialReference = SpatialReferences.Wgs84;
// Create stops for each location.
Stop stop1 = new Stop(_conventionCenter)
{
Name = "San Diego Convention Center"
};
Stop stop2 = new Stop(_aerospaceMuseum)
{
Name = "RH Fleet Aerospace Museum"
};
// Assign the stops to the route parameters.
List <Stop> stopPoints = new List <Stop> {
stop1, stop2
};
_routeParams.SetStops(stopPoints);
// Get the route results.
_routeResult = await _routeTask.SolveRouteAsync(_routeParams);
_route = _routeResult.Routes[0];
// Add a graphics overlay for the route graphics.
_myMapView.GraphicsOverlays.Add(new GraphicsOverlay());
// Add graphics for the stops.
SimpleMarkerSymbol stopSymbol = new SimpleMarkerSymbol(SimpleMarkerSymbolStyle.Diamond, Color.OrangeRed, 20);
_myMapView.GraphicsOverlays[0].Graphics.Add(new Graphic(_conventionCenter, stopSymbol));
_myMapView.GraphicsOverlays[0].Graphics.Add(new Graphic(_aerospaceMuseum, stopSymbol));
// Create a graphic (with a dashed line symbol) to represent the route.
_routeAheadGraphic = new Graphic(_route.RouteGeometry)
{
Symbol = new SimpleLineSymbol(SimpleLineSymbolStyle.Dash, Color.BlueViolet, 5)
};
// Create a graphic (solid) to represent the route that's been traveled (initially empty).
_routeTraveledGraphic = new Graphic {
Symbol = new SimpleLineSymbol(SimpleLineSymbolStyle.Solid, Color.LightBlue, 3)
};
// Add the route graphics to the map view.
_myMapView.GraphicsOverlays[0].Graphics.Add(_routeAheadGraphic);
_myMapView.GraphicsOverlays[0].Graphics.Add(_routeTraveledGraphic);
// Set the map viewpoint to show the entire route.
await _myMapView.SetViewpointGeometryAsync(_route.RouteGeometry, 100);
// Enable the navigation button.
_navigateButton.Enabled = true;
}
catch (Exception e)
{
new AlertDialog.Builder(this).SetMessage(e.Message).SetTitle("Error").Show();
}
}
private async void Initialize()
{
// Create new map with the streets basemap.
Map myMap = new Map(Basemap.CreateStreets());
// Create a URI to the image service raster.
Uri rasterUri = new Uri("https://sampleserver6.arcgisonline.com/arcgis/rest/services/NLCDLandCover2001/ImageServer");
// Create new image service raster from the URI.
ImageServiceRaster imageServiceRaster = new ImageServiceRaster(rasterUri);
try
{
// Load the image service raster.
await imageServiceRaster.LoadAsync();
// NOTE: This is the ASCII text for actual raw JSON string:
// ========================================================
//{
// "raster_function_arguments":
// {
// "z_factor":{"double":25.0,"type":"Raster_function_variable"},
// "slope_type":{"raster_slope_type":"none","type":"Raster_function_variable"},
// "azimuth":{"double":315,"type":"Raster_function_variable"},
// "altitude":{"double":45,"type":"Raster_function_variable"},
// "type":"Raster_function_arguments",
// "raster":{"name":"raster","is_raster":true,"type":"Raster_function_variable"},
// "nbits":{"int":8,"type":"Raster_function_variable"}
// },
// "raster_function":{"type":"Hillshade_function"},
// "type":"Raster_function_template"
//}
// Define the JSON string needed for the raster function
const string theJsonString = @"{
""raster_function_arguments"":
{
""z_factor"":{ ""double"":25.0,""type"":""Raster_function_variable""},
""slope_type"":{ ""raster_slope_type"":""none"",""type"":""Raster_function_variable""},
""azimuth"":{ ""double"":315,""type"":""Raster_function_variable""},
""altitude"":{ ""double"":45,""type"":""Raster_function_variable""},
""type"":""Raster_function_arguments"",
""raster"":{ ""name"":""raster"",""is_raster"":true,""type"":""Raster_function_variable""},
""nbits"":{ ""int"":8,""type"":""Raster_function_variable""}
},
""raster_function"":{ ""type"":""Hillshade_function""},
""type"":""Raster_function_template""
}";
// Create a raster function from the JSON string using the static/Shared method called: RasterFunction.FromJson(JSON as String).
RasterFunction rasterFunction = RasterFunction.FromJson(theJsonString);
// NOTE: You could have alternatively created the raster function via a JSON string that is contained in a
// file on disk (ex: hillshade_simplified.json) via the constructor: Esri.ArcGISRuntime.Rasters.RasterFunction(path as String).
// Get the raster function arguments.
RasterFunctionArguments rasterFunctionArguments = rasterFunction.Arguments;
// Get the list of names from the raster function arguments.
IReadOnlyList <string> myRasterNames = rasterFunctionArguments.GetRasterNames();
// Apply the first raster name and image service raster in the raster function arguments.
rasterFunctionArguments.SetRaster(myRasterNames[0], imageServiceRaster);
// Create a new raster based on the raster function.
Raster raster = new Raster(rasterFunction);
// Create a new raster layer from the raster.
RasterLayer rasterLayer = new RasterLayer(raster);
// Add the raster layer to the maps layer collection.
myMap.Basemap.BaseLayers.Add(rasterLayer);
// Assign the map to the map view.
_myMapView.Map = myMap;
// Get the service information (aka. metadata) about the image service raster.
ArcGISImageServiceInfo arcGISImageServiceInfo = imageServiceRaster.ServiceInfo;
// Zoom the map to the extent of the image service raster (which also the extent of the raster layer).
await _myMapView.SetViewpointGeometryAsync(arcGISImageServiceInfo.FullExtent);
}
catch (Exception e)
{
new UIAlertView("Error", e.ToString(), (IUIAlertViewDelegate)null, "OK", null).Show();
}
}
public Basemap GetBaseMap(CusMapView cusMapView)
{
switch (cusMapView.Map.MapType)
{
case MapType.Imagery:
return(Basemap.CreateImagery());
case MapType.Streets:
return(Basemap.CreateStreets());
case MapType.ImageryWithLabels:
return(Basemap.CreateImageryWithLabels());
case MapType.ImageryWithLabelsVector:
return(Basemap.CreateImageryWithLabelsVector());
case MapType.LightGrayCanvas:
return(Basemap.CreateLightGrayCanvas());
case MapType.LightGrayCanvasVector:
return(Basemap.CreateLightGrayCanvasVector());
case MapType.DarkGrayCanvasVector:
return(Basemap.CreateDarkGrayCanvasVector());
case MapType.NationalGeographic:
return(Basemap.CreateNationalGeographic());
case MapType.Oceans:
return(Basemap.CreateOceans());
case MapType.StreetsVector:
return(Basemap.CreateStreetsVector());
case MapType.StreetsWithReliefVector:
return(Basemap.CreateStreetsWithReliefVector());
case MapType.StreetsNightVector:
return(Basemap.CreateStreetsNightVector());
case MapType.NavigationVector:
return(Basemap.CreateNavigationVector());
case MapType.TerrainWithLabels:
return(Basemap.CreateTerrainWithLabels());
case MapType.TerrainWithLabelsVector:
return(Basemap.CreateTerrainWithLabelsVector());
case MapType.Topographic:
return(Basemap.CreateTopographic());
case MapType.TopographicVector:
return(Basemap.CreateTopographicVector());
case MapType.OpenStreetMap:
return(Basemap.CreateOpenStreetMap());
case MapType.WebMap:
if (!string.IsNullOrEmpty(cusMapView.Map.WebMapUrl))
{
return(new Basemap(new Uri(cusMapView.Map.WebMapUrl)));
}
throw new ArgumentOutOfRangeException(nameof(cusMapView.Map.WebMapUrl), cusMapView.Map.WebMapUrl, null);
default:
throw new ArgumentOutOfRangeException(nameof(cusMapView.Map.MapType), cusMapView.Map.MapType, null);
}
}
