private async Task QueryStateFeature(string stateName)
{
try
{
// Create a query parameters that will be used to Query the feature table
QueryParameters queryParams = new QueryParameters();
// Trim whitespace on the state name to prevent broken queries
string formattedStateName = stateName.Trim().ToUpper();
// Construct and assign the where clause that will be used to query the feature table
queryParams.WhereClause = "upper(STATE_NAME) LIKE '%" + formattedStateName + "%'";
// Query the feature table
FeatureQueryResult queryResult = await _featureTable.QueryFeaturesAsync(queryParams);
// Cast the QueryResult to a List so the results can be interrogated.
List <Feature> features = queryResult.ToList();
if (features.Any())
{
// Create an envelope.
EnvelopeBuilder envBuilder = new EnvelopeBuilder(SpatialReferences.WebMercator);
// Loop over each feature from the query result.
foreach (Feature feature in features)
{
// Add the extent of each matching feature to the envelope.
envBuilder.UnionOf(feature.Geometry.Extent);
// Select each feature.
_featureLayer.SelectFeature(feature);
}
// Zoom to the extent of the selected feature(s).
await myMapView.SetViewpointGeometryAsync(envBuilder.ToGeometry(), 50);
}
else
{
await((Page)Parent).DisplayAlert("State Not Found!", "Add a valid state name.", "OK");
}
}
catch (Exception)
{
await((Page)Parent).DisplayAlert("Sample error", "An error occurred", "OK");
}
}
private async void AsyncInitProcesses()
{
await _redlandsBoundary.LoadAsync();
await _mapView.SetViewpointAsync(new Viewpoint(_redlandsBoundary.FullExtent.Extent));
// await _water.LoadAsync();
await _parks.LoadAsync();
// Holds locations of hospitals around San Diego.
_parkPolygons = new List <Polygon>();
// Create query parameters to select all features.
QueryParameters queryParams = new QueryParameters()
{
WhereClause = "1=1"
};
FeatureQueryResult redlandsResult = await _redlandsBoundary.FeatureTable.QueryFeaturesAsync(queryParams);
List <Polygon> redlandsBound = redlandsResult.ToList().Select(feature => (Polygon)feature.Geometry).ToList();
//GeometryEngine.Union()
await _mapView.SetViewpointAsync(new Viewpoint(GeometryEngine.Union(redlandsBound).Extent));
// Query all features in the facility table.
FeatureQueryResult facilityResult = await _parks.FeatureTable.QueryFeaturesAsync(queryParams);
// Add all of the query results to facilities as new Facility objects.
_parkPolygons.AddRange(facilityResult.ToList().Select(feature => (Polygon)feature.Geometry));
//await _mapView.SetViewpointAsync(new Viewpoint(_parkPolygons[0].Extent));
FeatureQueryResult buildingsResult = await _buildings.FeatureTable.QueryFeaturesAsync(queryParams);
_buildingGeometry = buildingsResult.ToList().Select(feature => (Polygon)feature.Geometry).ToList();
/*
* foreach(Polygon building in _buildingGeometry)
* {
* Graphic bgraphic = new Graphic(building, new SimpleFillSymbol(SimpleFillSymbolStyle.Solid, Color.Blue, new SimpleLineSymbol(SimpleLineSymbolStyle.Dash, Color.Gray, 3.0)));
* _barrierOverlay.Graphics.Add(bgraphic);
* }
*/
}
private async Task QueryStateFeature(string stateName)
{
try
{
// Hide keyboard
_queryTextView.ResignFirstResponder();
// Create a query parameters that will be used to Query the feature table
QueryParameters queryParams = new QueryParameters();
// Trim whitespace on the state name to prevent broken queries
String formattedStateName = stateName.Trim().ToUpper();
// Construct and assign the where clause that will be used to query the feature table
queryParams.WhereClause = "upper(STATE_NAME) LIKE '%" + formattedStateName + "%'";
// Query the feature table
FeatureQueryResult queryResult = await _featureTable.QueryFeaturesAsync(queryParams);
// Cast the QueryResult to a List so the results can be interrogated
var features = queryResult.ToList();
if (features.Any())
{
// Get the first feature returned in the Query result
Feature feature = features[0];
// Add the returned feature to the collection of currently selected features
_featureLayer.SelectFeature(feature);
// Zoom to the extent of the newly selected feature
await _myMapView.SetViewpointGeometryAsync(feature.Geometry.Extent);
}
else
{
var alert = new UIAlertView("State Not Found!", "Add a valid state name.", null, "OK", null);
alert.Show();
}
}
catch (Exception ex)
{
var alert = new UIAlertView("Sample error", ex.ToString(), null, "OK", null);
alert.Show();
}
}
private async void Initialize()
{
// Create a new Map with a vector streets basemap.
Map myMap = new Map(Basemap.CreateStreetsVector());
// Create the URI to the Service Requests map service.
Uri serviceRequestUri = new Uri("https://sampleserver6.arcgisonline.com/arcgis/rest/services/ServiceRequest/MapServer");
// Create a new ArcGISMapImageLayer that uses the service URI.
ArcGISMapImageLayer serviceRequestsMapImageLayer = new ArcGISMapImageLayer(serviceRequestUri);
// Load all sublayers and tables contained by the map image layer.
await serviceRequestsMapImageLayer.LoadTablesAndLayersAsync();
// Set the initial map extent to the extent of all service request features.
Envelope requestsExtent = serviceRequestsMapImageLayer.FullExtent;
myMap.InitialViewpoint = new Viewpoint(requestsExtent);
// Add the layer to the map.
myMap.OperationalLayers.Add(serviceRequestsMapImageLayer);
// Get the service request comments table from the map image layer.
ServiceFeatureTable commentsTable = serviceRequestsMapImageLayer.Tables[0];
// Create query parameters to get all non-null service request comment records (features) from the table.
QueryParameters queryToGetNonNullComments = new QueryParameters
{
WhereClause = "requestid <> '' AND comments <> ''"
};
// Query the comments table to get the non-null records.
FeatureQueryResult commentQueryResult = await commentsTable.QueryFeaturesAsync(queryToGetNonNullComments, QueryFeatureFields.LoadAll);
// Show the records from the service request comments table in the list view control.
CommentsListBox.ItemsSource = commentQueryResult.ToList();
// Create a graphics overlay to show selected features and add it to the map view.
_selectedFeaturesOverlay = new GraphicsOverlay();
MyMapView.GraphicsOverlays.Add(_selectedFeaturesOverlay);
// Assign the map to the MapView.
MyMapView.Map = myMap;
}
private async Task QueryStateFeature(string stateName)
{
// Create dialog to display alert information
var alert = new AlertDialog.Builder(this);
try
{
// Create a query parameters that will be used to Query the feature table
QueryParameters queryParams = new QueryParameters();
// Construct and assign the where clause that will be used to query the feature table
queryParams.WhereClause = "upper(STATE_NAME) LIKE '%" + (stateName.Trim().ToUpper()) + "%'";
// Query the feature table
FeatureQueryResult queryResult = await _featureTable.QueryFeaturesAsync(queryParams);
// Cast the QueryResult to a List so the results can be interrogated
var features = queryResult.ToList();
if (features.Any())
{
// Get the first feature returned in the Query result
Feature feature = features[0];
// Add the returned feature to the collection of currently selected features
_featureLayer.SelectFeature(feature);
// Zoom to the extent of the newly selected feature
await _myMapView.SetViewpointGeometryAsync(feature.Geometry.Extent);
}
else
{
alert.SetTitle("State Not Found!");
alert.SetMessage("Add a valid state name.");
alert.Show();
}
}
catch (Exception ex)
{
alert.SetTitle("Sample Error");
alert.SetMessage(ex.Message);
alert.Show();
}
}
private async Task ShowTurtleData()
{
myMap.OperationalLayers.Add(_featureLayer);
GreenSeaTurtleCheckbox.IsChecked = true;
LeatherbackCheckbox.IsChecked = true;
OliveRidleyCheckbox.IsChecked = true;
LoggerheadCheckbox.IsChecked = true;
UnidentifiedTurtleCheckBox.IsChecked = true;
try
{
// Create a query parameters that will be used to Query the feature table.
QueryParameters queryParams = new QueryParameters();
// Construct and assign the where clause that will be used to query the feature table.
queryParams.WhereClause = "1=1";
// Query the feature table.
FeatureQueryResult queryResult = await _featureTable.QueryFeaturesAsync(queryParams);
// Cast the QueryResult to a List so the results can be interrogated.
List <Feature> features = queryResult.ToList();
if (features.Any())
{
// Loop over each feature from the query result.
foreach (Feature feature in features)
{
var attributevalue = feature.GetAttributeValue("Species").ToString();
var attributeDatevalue = feature.GetAttributeValue("Date").ToString();
// Select each feature.
_featureLayer.SetFeatureVisible(feature, true);
}
}
else
{
MessageBox.Show("No Features to Select");
}
}
catch (Exception ex)
{
MessageBox.Show("An error occurred.\n" + ex, "Sample error");
}
}
private async void MapView_Tapped(object sender, Esri.ArcGISRuntime.Xamarin.Forms.GeoViewInputEventArgs e)
{
// Clear any existing selection.
_damageLayer.ClearSelection();
// Reconfigure the button.
DeleteButton.IsEnabled = false;
DeleteButton.Text = "Delete feature";
try
{
// Perform an identify to determine if a user tapped on a feature.
IdentifyLayerResult identifyResult = await MyMapView.IdentifyLayerAsync(_damageLayer, e.Position, 5, false);
// Do nothing if there are no results.
if (!identifyResult.GeoElements.Any())
{
return;
}
// Otherwise, get the ID of the first result.
long featureId = (long)identifyResult.GeoElements.First().Attributes["objectid"];
// Get the feature by constructing a query and running it.
QueryParameters qp = new QueryParameters();
qp.ObjectIds.Add(featureId);
FeatureQueryResult queryResult = await _damageLayer.FeatureTable.QueryFeaturesAsync(qp);
_tappedFeature = queryResult.First();
// Select the feature.
_damageLayer.SelectFeature(_tappedFeature);
// Update the button to allow deleting the feature.
ConfigureDeletionButton(_tappedFeature);
}
catch (Exception ex)
{
await Application.Current.MainPage.DisplayAlert("Error", ex.ToString(), "OK");
}
}
private async void MapView_Tapped(object sender, GeoViewInputEventArgs e)
{
// Clear any existing selection.
_damageLayer.ClearSelection();
// Dismiss any existing callouts.
_myMapView.DismissCallout();
try
{
// Perform an identify to determine if a user tapped on a feature.
IdentifyLayerResult identifyResult = await _myMapView.IdentifyLayerAsync(_damageLayer, e.Position, 8, false);
// Do nothing if there are no results.
if (!identifyResult.GeoElements.Any())
{
return;
}
// Otherwise, get the ID of the first result.
long featureId = (long)identifyResult.GeoElements.First().Attributes["objectid"];
// Get the feature by constructing a query and running it.
QueryParameters qp = new QueryParameters();
qp.ObjectIds.Add(featureId);
FeatureQueryResult queryResult = await _damageLayer.FeatureTable.QueryFeaturesAsync(qp);
Feature tappedFeature = queryResult.First();
// Select the feature.
_damageLayer.SelectFeature(tappedFeature);
// Show the callout.
ShowDeletionCallout(tappedFeature);
}
catch (Exception ex)
{
ShowMessage(ex.ToString(), "There was a problem.");
}
}
private async Task QueryStateFeature(string stateName)
{
try
{
// Create a query parameters that will be used to Query the feature table
QueryParameters queryParams = new QueryParameters();
// Construct and assign the where clause that will be used to query the feature table
queryParams.WhereClause = "upper(STATE_NAME) LIKE '%" + (stateName.ToUpper()) + "%'";
// Query the feature table
FeatureQueryResult queryResult = await _featureTable.QueryFeaturesAsync(queryParams);
// Cast the QueryResult to a List so the results can be interrogated
var features = queryResult.ToList();
if (features.Any())
{
// Get the first feature returned in the Query result
Feature feature = features[0];
// Add the returned feature to the collection of currently selected features
_featureLayer.SelectFeature(feature);
// Zoom to the extent of the newly selected feature
await myMapView.SetViewpointGeometryAsync(feature.Geometry.Extent);
}
else
{
var message = new MessageDialog("State Not Found!", "Add a valid state name.");
await message.ShowAsync();
}
}
catch (Exception ex)
{
var message = new MessageDialog("Sample error: " + ex.ToString(), "An error occurred");
await message.ShowAsync();
}
}
private async Task <List <TrackInfo> > GetPlaylistArtists(Paging <PlaylistTrack> playlistTracks, FeatureTable artistPlaces)
{
List <TrackInfo> artists = new List <TrackInfo>();
foreach (PlaylistTrack plt in playlistTracks.Items)
{
SimpleArtist artist = plt.Track.Artists.FirstOrDefault();
string artistid = artist.Id;
string trackid = plt.Track.Id;
string trackname = plt.Track.Name;
QueryParameters query = new QueryParameters
{
WhereClause = "artistid = '" + artistid + "'"
};
FeatureQueryResult queryResult = await artistPlaces.QueryFeaturesAsync(query);
foreach (Feature f in queryResult)
{
await(f as ArcGISFeature).LoadAsync();
string artistname = f.Attributes["artistname"].ToString();
string hometown = f.Attributes["placename"].ToString();
string bio = f.Attributes["bioshort"].ToString();
bool isOnTour = int.Parse(f.Attributes["isontour"].ToString()) == 1;
string imgUrl = f.Attributes["imageurl"].ToString();
BitmapImage src = new BitmapImage(new Uri(imgUrl, UriKind.Absolute));
TrackInfo thisArtist = new TrackInfo(artistname, artistid, bio, src, hometown, trackname, trackid, f.Geometry as MapPoint, isOnTour);
// Add the track info to the list
artists.Add(thisArtist);
}
}
return(artists);
}
// 点选
private async void myMapViewGetAttributeValue(object sender, Esri.ArcGISRuntime.UI.Controls.GeoViewInputEventArgs e)
{
StackPanel stackPanel = (StackPanel)w.FindName("cykGeometryCalcuEdit");
if (layersComboBox.SelectedIndex >= 0 && stackPanel.Visibility == Visibility.Visible)
{
myShapeFileResult = await myMapView.IdentifyLayerAsync(featureLayer, e.Position, 15, false);
//if(myShapeFileResult != null) MessageBox.Show("" + 12 + " " + myShapeFileResult);
// 要素选择高亮
try
{
string numberFID = ((Feature)(myShapeFileResult.GeoElements[0])).GetAttributeValue("FID") + "";
QueryParameters queryParams = new QueryParameters
{
//WhereClause = "upper(FID) = " + numberFID
Geometry = e.Location
};
FeatureQueryResult queryResult = await featureLayer.SelectFeaturesAsync(queryParams, Esri.ArcGISRuntime.Mapping.SelectionMode.New);
IEnumerator <Feature> resultFeatures = queryResult.GetEnumerator();
List <Feature> features = new List <Feature>();
while (resultFeatures.MoveNext())
{
features.Add(resultFeatures.Current);
}
// 每一次"选择"都需要点击一次"选择"按钮
myMapView.GeoViewTapped -= myMapViewGetAttributeValue;
//t1.Text = numberFID + " ID;" + features.Count + "个; " + e.Location.X + ", " + e.Location.Y + " // 投影" + myMapView.Map.SpatialReference + "," + myMapView.UnitsPerPixel;
}
catch (Exception ex)
{
}
//t1.Text += featureLayer.Description + table.DisplayName + "...";
}
}
private async void GetFeaturesFromQuery()
{
try
{
// Create a service feature table to get features from.
ServiceFeatureTable featTable = new ServiceFeatureTable(new Uri(FeatureLayerUrl));
// Create a query to get all features in the table.
QueryParameters queryParams = new QueryParameters
{
WhereClause = "1=1"
};
// Query the table to get all features.
FeatureQueryResult featureResult = await featTable.QueryFeaturesAsync(queryParams);
// Create a new feature collection table from the result features.
FeatureCollectionTable collectTable = new FeatureCollectionTable(featureResult);
// Create a feature collection and add the table.
FeatureCollection featCollection = new FeatureCollection();
featCollection.Tables.Add(collectTable);
// Create a layer to display the feature collection, add it to the map's operational layers.
FeatureCollectionLayer featureCollectionLayer = new FeatureCollectionLayer(featCollection);
_myMapView.Map.OperationalLayers.Add(featureCollectionLayer);
// Zoom to the extent of the feature collection layer.
await featureCollectionLayer.LoadAsync();
await _myMapView.SetViewpointGeometryAsync(featureCollectionLayer.FullExtent, 50);
}
catch (Exception e)
{
new UIAlertView("Error", e.ToString(), (IUIAlertViewDelegate)null, "OK", null).Show();
}
}
private async Task ShowWindData()
{
myMap.OperationalLayers.Add(_windFeatureLayer);
try
{
// Create a query parameters that will be used to Query the feature table.
QueryParameters queryParams = new QueryParameters();
// Construct and assign the where clause that will be used to query the feature table.
queryParams.WhereClause = "1=1";
// Query the feature table.
FeatureQueryResult queryResult = await _windFeatureTable.QueryFeaturesAsync(queryParams);
// Cast the QueryResult to a List so the results can be interrogated.
List <Feature> features = queryResult.ToList();
if (features.Any())
{
// Loop over each feature from the query result.
foreach (Feature feature in features)
{
// Select each feature.
_windFeatureLayer.SetFeatureVisible(feature, true);
_windFeatureLayer.MinScale = 100000000;
}
}
else
{
MessageBox.Show("No Features to Select");
}
}
catch (Exception ex)
{
MessageBox.Show("An error occurred.\n" + ex, "Sample error");
}
}
private async void unionBtn_Click(object sender, RoutedEventArgs e)
{
FeatureQueryResult r = await layer.GetSelectedFeaturesAsync();
IEnumerator <Feature> resultFeatures = r.GetEnumerator();
List <Feature> features = new List <Feature>();
while (resultFeatures.MoveNext())
{
features.Add(resultFeatures.Current);
}
for (int i = 0; i < features.Count - 1; i++)
{
resultGeometry = GeometryEngine.Union(features[i].Geometry, features[i + 1].Geometry.Extent);
}
try
{
if (featureStyle == 1)
{
graphic = new Graphic(resultGeometry, simplePointSymbol);
}
else if (featureStyle == 2)
{
graphic = new Graphic(resultGeometry, simpleLineSymbol);
}
else if (featureStyle == 3)
{
graphic = new Graphic(resultGeometry, simpleFillSymbol);
}
MainWindow.graphicsOverlay.Graphics.Add(graphic);
}
catch
{
}
}
/// <summary>
/// Temporary method. Just displays attributes and values from a single record in the passed table.
/// </summary>
/// <param name="testLayer">from which to get the single record</param>
/// <returns>marker indicating the task is complete</returns>
public async Task <bool> ShowSingleRecordAsync(TesterLayer testLayer)
{
if (testLayer.LayerLoadException != null)
{
this.LogLayerLoadException(testLayer);
}
else if (testLayer.FeatureTable != null)
{
FeatureTable aTable = testLayer.FeatureTable;
QueryParameters queryParams = new QueryParameters();
queryParams.MaxFeatures = 1;
queryParams.ReturnGeometry = true;
queryParams.WhereClause = "1=1";
FeatureQueryResult fqr = await aTable.QueryFeaturesAsync(queryParams);
IEnumerator <Feature> features = fqr.GetEnumerator();
this.LoggingText = "=============";
this.LoggingText = "TABLE: " + aTable.TableName;
Feature aFeature = null;
while (features.MoveNext())
{
aFeature = features.Current;
this.LoggingText = "\tShape = " + aFeature.Geometry;
foreach (string attName in aFeature.Attributes.Keys)
{
this.LoggingText = "\t" + attName + " = " + aFeature.Attributes[attName];
}
}
this.LoggingText = "=============";
}
return(true);
}
private async void Initialize()
{
// Create a new Map with a vector streets basemap.
Map myMap = new Map(Basemap.CreateStreetsVector());
// Create the URI to the Service Requests map service.
Uri serviceRequestUri = new Uri("https://sampleserver6.arcgisonline.com/arcgis/rest/services/ServiceRequest/MapServer");
// Create a new ArcGISMapImageLayer that uses the service URI.
ArcGISMapImageLayer serviceRequestsMapImageLayer = new ArcGISMapImageLayer(serviceRequestUri);
try
{
// Load all sublayers and tables contained by the map image layer.
await serviceRequestsMapImageLayer.LoadTablesAndLayersAsync();
// Set the initial map extent to the extent of all service request features.
Envelope requestsExtent = serviceRequestsMapImageLayer.FullExtent;
myMap.InitialViewpoint = new Viewpoint(requestsExtent);
// Add the layer to the map.
myMap.OperationalLayers.Add(serviceRequestsMapImageLayer);
// Get the service request comments table from the map image layer.
ServiceFeatureTable commentsTable = serviceRequestsMapImageLayer.Tables[0];
// Create query parameters to get all non-null service request comment records (features) from the table.
QueryParameters queryToGetNonNullComments = new QueryParameters
{
WhereClause = "requestid <> '' AND comments <> ''"
};
// Query the comments table to get the non-null records.
FeatureQueryResult commentQueryResult = await commentsTable.QueryFeaturesAsync(queryToGetNonNullComments, QueryFeatureFields.LoadAll);
// Show the records from the service request comments table in the UITableView control.
foreach (ArcGISFeature commentFeature in commentQueryResult)
{
_serviceRequestComments.Add(commentFeature);
}
// Create the table view source that uses the list of features.
_commentsTableSource = new ServiceRequestCommentsTableSource(_serviceRequestComments);
// Assign the table view source to the table view control.
_tableView.Source = _commentsTableSource;
// Subscribe to event.
_commentsTableSource.ServiceRequestCommentSelected += CommentsTableSource_ServiceRequestCommentSelected;
// Create a graphics overlay to show selected features and add it to the map view.
_selectedFeaturesOverlay = new GraphicsOverlay();
_myMapView.GraphicsOverlays.Add(_selectedFeaturesOverlay);
// Assign the map to the MapView.
_myMapView.Map = myMap;
// Reload the table view data to refresh the display.
_tableView.ReloadData();
}
catch (Exception e)
{
new UIAlertView("Error", e.ToString(), (IUIAlertViewDelegate)null, "OK", null).Show();
}
}
private async void MainWindow_Click(object sender, Esri.ArcGISRuntime.UI.Controls.GeoViewInputEventArgs e)
{
if (count == 0)
{
count = 1;
_downPoint = e.Location;
//_downPointP = e.Position;
//dragSelectRectangle.Margin = new Thickness(0, 0, 0, 0);
//dragSelectRectangle.Width = 0;
//dragSelectRectangle.Height = 0;
}
else
{
count = 0;
var _endpoint = e.Location;
try
{
double tolerance = 0.0001;
double mapTolerance = tolerance /** myMapView.UnitsPerPixel*/;
MapPoint geometry = new MapPoint((_downPoint.X + _endpoint.X) / 2, (_downPoint.Y + _endpoint.Y) / 2, myMapView.SpatialReference);
if (myMapView.IsWrapAroundEnabled)
{
geometry = (MapPoint)GeometryEngine.NormalizeCentralMeridian(geometry);
}
Envelope selectionEnvelope = new Envelope(geometry, Math.Abs(_downPoint.X - _endpoint.X), Math.Abs(_downPoint.Y - _endpoint.Y) /*geometry.X - mapTolerance, geometry.Y - mapTolerance, geometry.X + mapTolerance, geometry.Y + mapTolerance,*/ /*myMapView.Map.SpatialReference*/);
QueryParameters queryParams = new QueryParameters()
{
Geometry = selectionEnvelope
};
FeatureLayer tempLayer = (FeatureLayer)(myMapView.Map.OperationalLayers[0]);
FeatureQueryResult fr = await tempLayer.SelectFeaturesAsync(queryParams, Esri.ArcGISRuntime.Mapping.SelectionMode.New);
IEnumerator <Feature> frr = fr.GetEnumerator();
List <Feature> features = new List <Feature>();
while (frr.MoveNext())
{
features.Add(frr.Current);
}
// 查看属性
Esri.ArcGISRuntime.Data.FeatureTable tempTable = (Esri.ArcGISRuntime.Data.FeatureTable)tempLayer.FeatureTable;
long row = tempTable.NumberOfFeatures;
int col = tempTable.Fields.Count;
List <String> fieldNames = new List <string>();
for (int i = 0; i < col; i++)
{
fieldNames.Add(tempTable.Fields[i] + "");
}
StackPanel stackPanel = new StackPanel();
WrapPanel[] wrapPanels = new WrapPanel[row];
// 字段名
WrapPanel wrapPanelField = new WrapPanel()
{
Margin = new Thickness()
{
Left = 10,
Top = 1,
Right = 10,
Bottom = 1
}
};
for (int i = 0; i < col; i++)
{
Button button = new Button()
{
Content = fieldNames[i],
ToolTip = fieldNames[i],
Width = 60,
Background = new System.Windows.Media.SolidColorBrush(System.Windows.Media.Color.FromArgb(255, 100, 183, 134))
};
wrapPanelField.Children.Add(button);
}
stackPanel.Children.Add(wrapPanelField);
// 记录
for (int i = 0; i < row; i++)
{
wrapPanels[i] = new WrapPanel()
{
Margin = new Thickness()
{
Left = 10,
Top = 1,
Right = 10,
Bottom = 1
}
};
for (int j = 0; j < col; j++)
{
Button button = new Button()
{
Width = 60,
Content = features[i].GetAttributeValue(fieldNames[j]),
ToolTip = features[i].GetAttributeValue(fieldNames[j])
};
wrapPanels[i].Children.Add(button);
}
stackPanel.Children.Add(wrapPanels[i]);
}
ScrollViewer scrollViewer = new ScrollViewer();
scrollViewer.VerticalScrollBarVisibility = ScrollBarVisibility.Visible;
scrollViewer.HorizontalScrollBarVisibility = ScrollBarVisibility.Auto;
scrollViewer.Content = stackPanel;
var window = new Window();
window.Content = scrollViewer;
window.SizeToContent = SizeToContent.WidthAndHeight;
window.WindowStartupLocation = WindowStartupLocation.CenterScreen;
window.MaxHeight = 700;
window.MaxWidth = 1000;
window.Title = "要素多选属性表";
window.Show();
}
catch
{
t1.Text = "要素多选发生错误";
}
}
}
private async void submitQuery(UIAlertAction obj)
{
// If the population value entered is not numeric, warn the user and exit.
double populationNumber;
if (!double.TryParse(_queryEntry.Text.Trim(), out populationNumber))
{
UIAlertController alert = UIAlertController.Create("Invalid number", "Population value must be numeric.", UIAlertControllerStyle.Alert);
alert.AddAction(UIAlertAction.Create("OK", UIAlertActionStyle.Default, null));
PresentViewController(alert, true, null);
return;
}
// Get the USA map image layer (the first and only operational layer in the map).
ArcGISMapImageLayer usaMapImageLayer = (ArcGISMapImageLayer)_myMapView.Map.OperationalLayers[0];
try
{
// Use a utility method on the map image layer to load all the sublayers and tables.
await usaMapImageLayer.LoadTablesAndLayersAsync();
// Get the sublayers of interest (skip 'Highways' since it doesn't have the POP2000 field).
ArcGISMapImageSublayer citiesSublayer = (ArcGISMapImageSublayer)usaMapImageLayer.Sublayers[0];
ArcGISMapImageSublayer statesSublayer = (ArcGISMapImageSublayer)usaMapImageLayer.Sublayers[2];
ArcGISMapImageSublayer countiesSublayer = (ArcGISMapImageSublayer)usaMapImageLayer.Sublayers[3];
// Get the service feature table for each of the sublayers.
ServiceFeatureTable citiesTable = citiesSublayer.Table;
ServiceFeatureTable statesTable = statesSublayer.Table;
ServiceFeatureTable countiesTable = countiesSublayer.Table;
// Create the query parameters that will find features in the current extent with a population greater than the value entered.
QueryParameters populationQuery = new QueryParameters
{
WhereClause = "POP2000 > " + populationNumber,
Geometry = _myMapView.GetCurrentViewpoint(ViewpointType.BoundingGeometry).TargetGeometry
};
// Query each of the sublayers with the query parameters.
FeatureQueryResult citiesQueryResult = await citiesTable.QueryFeaturesAsync(populationQuery);
FeatureQueryResult statesQueryResult = await statesTable.QueryFeaturesAsync(populationQuery);
FeatureQueryResult countiesQueryResult = await countiesTable.QueryFeaturesAsync(populationQuery);
// Display the selected cities in the graphics overlay.
SimpleMarkerSymbol citySymbol = new SimpleMarkerSymbol(SimpleMarkerSymbolStyle.Circle, Color.Red, 16);
foreach (Feature city in citiesQueryResult)
{
Graphic cityGraphic = new Graphic(city.Geometry, citySymbol);
_selectedFeaturesOverlay.Graphics.Add(cityGraphic);
}
// Display the selected counties in the graphics overlay.
SimpleLineSymbol countyLineSymbol = new SimpleLineSymbol(SimpleLineSymbolStyle.Dash, Color.Cyan, 2);
SimpleFillSymbol countySymbol = new SimpleFillSymbol(SimpleFillSymbolStyle.DiagonalCross, Color.Cyan, countyLineSymbol);
foreach (Feature county in countiesQueryResult)
{
Graphic countyGraphic = new Graphic(county.Geometry, countySymbol);
_selectedFeaturesOverlay.Graphics.Add(countyGraphic);
}
// Display the selected states in the graphics overlay.
SimpleLineSymbol stateLineSymbol = new SimpleLineSymbol(SimpleLineSymbolStyle.Solid, Color.DarkCyan, 6);
SimpleFillSymbol stateSymbol = new SimpleFillSymbol(SimpleFillSymbolStyle.Null, Color.Cyan, stateLineSymbol);
foreach (Feature state in statesQueryResult)
{
Graphic stateGraphic = new Graphic(state.Geometry, stateSymbol);
_selectedFeaturesOverlay.Graphics.Add(stateGraphic);
}
}
catch (Exception e)
{
new UIAlertView("Error", e.ToString(), (IUIAlertViewDelegate)null, "OK", null).Show();
}
}
// 레이에서 해당 Feature 찾기
private async Task QueryStateFeature(string _FTR_CDE, string _FTR_IDN, FeatureLayer _featureLayer)
{
try
{
// 0.Feature 테이블 가져오기
//FeatureLayer __featureLayer = _featureLayer.Clone() as FeatureLayer;
FeatureTable _featureTable = _featureLayer.FeatureTable;
// Create a query parameters that will be used to Query the feature table.
QueryParameters queryParams = new QueryParameters();
// Construct and assign the where clause that will be used to query the feature table.
queryParams.WhereClause = " FTR_CDE = '" + _FTR_CDE + "' ";
if (!FmsUtil.IsNull(_FTR_IDN))
{
queryParams.WhereClause += " AND FTR_IDN = " + _FTR_IDN;
}
List <Feature> features;
try
{
// Query the feature table.
FeatureQueryResult queryResult = await _featureTable.QueryFeaturesAsync(queryParams);
// Cast the QueryResult to a List so the results can be interrogated.
features = queryResult.ToList();
}
catch (Exception)
{
Messages.ShowErrMsgBox("보호된 메모리 접근 에러..");
return;
}
if (features.Any())
{
// Create an envelope.
EnvelopeBuilder envBuilder = new EnvelopeBuilder(SpatialReferences.WebMercator);
// Loop over each feature from the query result.
foreach (Feature feature in features)
{
// Add the extent of each matching feature to the envelope.
//envBuilder.UnionOf(feature.Geometry.Extent); //복수의 피처영역 합치기
// Select each feature.
_featureLayer.SelectFeature(feature);
//해당피처로 이동
await mapView.SetViewpointCenterAsync(feature.Geometry.Extent.GetCenter(), 40000);
}
// Zoom to the extent of the selected feature(s).
//await mapView.SetViewpointGeometryAsync(envBuilder.ToGeometry(), 50);
}
else
{
MessageBox.Show("해당 시설물 위치를 찾을 수 없습니다.");
}
}
catch (Exception ex)
{
MessageBox.Show("An error occurred.\n" + ex, "Sample error");
}
}
/// <summary>
/// Creates a frequency analysis file for the specified table.
/// </summary>
/// <param name="outputFile">the file to which to write the analysis</param>
/// <param name="table">the table to analyse</param>
/// <returns>did things go well?</returns>
public async Task <bool> RunFrequencyAnalysis(string outputFile, GeodatabaseFeatureTable table)
{
bool allGood = true;
long totalRecs = table.NumberOfFeatures;
Dictionary <string, Dictionary <string, uint> > freqs = new Dictionary <string, Dictionary <string, uint> >();
string whereClause = "1=1";
string orderingName = null;
long lastOID = 0;
int lastBatchCount = -1;
long totalRecordsProcessed = 0;
int recordsPerBatch = 10000;
foreach (Field aField in table.Fields)
{
if (aField.FieldType == FieldType.OID)
{
orderingName = aField.Name;
whereClause = aField.Name + " > " + lastOID + " order by " + aField.Name;
break;
}
}
try
{
while (lastBatchCount != 0)
{
QueryParameters queryParams = new QueryParameters();
queryParams.ReturnGeometry = true;
lastBatchCount = 0;
if (orderingName == null)
{
queryParams.WhereClause = "1=1";
}
else
{
queryParams.WhereClause = orderingName + " > " + lastOID + " order by " + orderingName;
}
FeatureQueryResult result = await table.QueryFeaturesAsync(queryParams);
IEnumerator <Feature> features = result.GetEnumerator();
object attValue = null;
string attStringValue = null;
//
// Collect the frequencies.
//
while (features.MoveNext())
{
Feature aFeature = features.Current;
totalRecordsProcessed++;
lastBatchCount++;
foreach (string attName in aFeature.Attributes.Keys)
{
attValue = aFeature.Attributes[attName];
if (attValue == null)
{
attStringValue = "";
}
else
{
attStringValue = attValue.ToString();
}
this.StoreFrequency(attName, attStringValue, freqs);
if (orderingName.Equals(attName))
{
lastOID = (long)attValue;
}
}
if (totalRecordsProcessed % 2500 == 0)
{
Trace.WriteLine("Processed " + totalRecordsProcessed + " out of " + table.NumberOfFeatures);
}
if (lastBatchCount == recordsPerBatch)
{
features.Dispose();
break;
}
}
}
//
// Write out the frequencies.
//
using (StreamWriter writer = new StreamWriter(outputFile))
{
foreach (string attributeName in freqs.Keys)
{
Dictionary <string, uint> attributeFreqs = freqs[attributeName];
if (attributeFreqs.Count > 200)
{
writer.Write("\"");
writer.Write(attributeName);
writer.Write("\"");
writer.Write(",");
writer.Write("\"");
writer.Write("<MANY VALUES>");
writer.Write("\"");
writer.Write(",");
writer.Write(table.NumberOfFeatures);
writer.Write("\n");
}
else
{
foreach (string attributeValue in attributeFreqs.Keys)
{
uint numVals = attributeFreqs[attributeValue];
writer.Write("\"");
writer.Write(attributeName);
writer.Write("\"");
writer.Write(",");
writer.Write("\"");
writer.Write(attributeValue);
writer.Write("\"");
writer.Write(",");
writer.Write(numVals);
writer.Write("\n");
}
}
}
}
}
catch (Exception e)
{
allGood = false;
string excString = "=====================\n";
excString = excString + e.Message + "\n";
excString = excString + e.StackTrace + "\n";
this.LoggingText = excString;
}
return(allGood);
}
private async void GeoViewTapped(object sender, GeoViewInputEventArgs e)
{
// Disregard if not ready for edits
if (_readyForEdits == EditState.NotReady)
{
return;
}
// If an edit is in process, finish it
if (_readyForEdits == EditState.Editing)
{
// Hold a list of any selected features
List <Feature> selectedFeatures = new List <Feature>();
// Get all selected features then clear selection
foreach (FeatureLayer layer in myMapView.Map.OperationalLayers)
{
// Get the selected features
FeatureQueryResult layerFeatures = await layer.GetSelectedFeaturesAsync();
// FeatureQueryResult implements IEnumerable, so it can be treated as a collection of features
selectedFeatures.AddRange(layerFeatures);
// Clear the selection
layer.ClearSelection();
}
// Update all selected features' geometry
foreach (Feature feature in selectedFeatures)
{
// Get a reference to the correct feature table for the feature
GeodatabaseFeatureTable table = feature.FeatureTable as GeodatabaseFeatureTable;
// Ensure the geometry type of the table is point
if (table.GeometryType != GeometryType.Point)
{
continue;
}
// Set the new geometry
feature.Geometry = e.Location;
// Update the feature in the table
await table.UpdateFeatureAsync(feature);
}
// Update the edit state
_readyForEdits = EditState.Ready;
// Enable the sync button
mySyncButton.Enabled = true;
}
// Otherwise, start an edit
else
{
// Define a tolerance for use with identifying the feature
double tolerance = 15 * myMapView.UnitsPerPixel;
// Define the selection envelope
Envelope selectionEnvelope = new Envelope(e.Location.X - tolerance, e.Location.Y - tolerance, e.Location.X + tolerance, e.Location.Y + tolerance);
// Define query parameters for feature selection
QueryParameters query = new QueryParameters()
{
Geometry = selectionEnvelope
};
// Select the feature in all applicable tables
foreach (FeatureLayer layer in myMapView.Map.OperationalLayers)
{
await layer.SelectFeaturesAsync(query, SelectionMode.New);
}
// Set the edit state
_readyForEdits = EditState.Editing;
}
}
private async void sureBtn_Click(object sender, RoutedEventArgs e)
{
try
{
FeatureLayer tempLayer = (FeatureLayer)myMapView.Map.OperationalLayers[index];
Esri.ArcGISRuntime.Data.FeatureTable tempTable = tempLayer.FeatureTable;
// 语句
QueryParameters query = new QueryParameters();
query.WhereClause = string.Format(inTxt.Text);
FeatureQueryResult queryResult = await tempTable.QueryFeaturesAsync(query);
IEnumerator <Feature> resultFeatures = queryResult.GetEnumerator();
List <Feature> features = new List <Feature>();
while (resultFeatures.MoveNext())
{
features.Add(resultFeatures.Current);
}
MessageBox.Show(inTxt.Text + "\n" + features.Count + "\n" + query.WhereClause);
//long row = tempTable.NumberOfFeatures;
long row = features.Count;
int col = tempTable.Fields.Count;
List <String> fieldNames = new List <string>();
for (int i = 0; i < col; i++)
{
fieldNames.Add(tempTable.Fields[i] + "");
}
StackPanel stackPanel = new StackPanel();
WrapPanel[] wrapPanels = new WrapPanel[row];
// 字段名
WrapPanel wrapPanelField = new WrapPanel()
{
Margin = new Thickness()
{
Left = 10,
Top = 1,
Right = 10,
Bottom = 1
}
};
for (int i = 0; i < col; i++)
{
Button button = new Button()
{
Content = fieldNames[i],
ToolTip = fieldNames[i],
Width = 60,
Background = new System.Windows.Media.SolidColorBrush(System.Windows.Media.Color.FromArgb(255, 100, 183, 134))
};
wrapPanelField.Children.Add(button);
}
stackPanel.Children.Add(wrapPanelField);
// 记录
for (int i = 0; i < row; i++)
{
wrapPanels[i] = new WrapPanel()
{
Margin = new Thickness()
{
Left = 10,
Top = 1,
Right = 10,
Bottom = 1
}
};
for (int j = 0; j < col; j++)
{
Button button = new Button()
{
Width = 60,
Content = features[i].GetAttributeValue(fieldNames[j]),
ToolTip = features[i].GetAttributeValue(fieldNames[j])
};
wrapPanels[i].Children.Add(button);
}
stackPanel.Children.Add(wrapPanels[i]);
}
var window = new Window();
window.Content = stackPanel;
window.SizeToContent = SizeToContent.WidthAndHeight;
window.WindowStartupLocation = WindowStartupLocation.CenterScreen;
window.Title = "属性查询结果";
window.Show();
}
catch (Exception ex2)
{
MessageBox.Show("查询错误!\n" + ex2.Message + "\n");
}
}
// 打开属性表
private async void OpenFeatureTableWindow_Layers_CheckBox(object sender, RoutedEventArgs e)
{
MenuItem menuItem = sender as MenuItem;
ContextMenu cm = menuItem.Parent as ContextMenu;
int index = int.Parse(cm.Name.Substring(16));
FeatureLayer tempLayer = (FeatureLayer)myMapView.Map.OperationalLayers[index];
Esri.ArcGISRuntime.Data.FeatureTable tempTable = tempLayer.FeatureTable;
QueryParameters query = new QueryParameters();
query.WhereClause = string.Format("upper(FID) >= 0");
FeatureQueryResult queryResult = await tempTable.QueryFeaturesAsync(query);
IEnumerator <Feature> resultFeatures = queryResult.GetEnumerator();
List <Feature> features = new List <Feature>();
while (resultFeatures.MoveNext())
{
features.Add(resultFeatures.Current);
}
long row = tempTable.NumberOfFeatures;
int col = tempTable.Fields.Count;
List <String> fieldNames = new List <string>();
for (int i = 0; i < col; i++)
{
fieldNames.Add(tempTable.Fields[i] + "");
}
StackPanel stackPanel = new StackPanel();
WrapPanel[] wrapPanels = new WrapPanel[row];
// 字段名
WrapPanel wrapPanelField = new WrapPanel()
{
Margin = new Thickness()
{
Left = 10,
Top = 1,
Right = 10,
Bottom = 1
}
};
for (int i = 0; i < col; i++)
{
Button button = new Button()
{
Content = fieldNames[i],
ToolTip = fieldNames[i],
Width = 60,
Background = new System.Windows.Media.SolidColorBrush(System.Windows.Media.Color.FromArgb(255, 100, 183, 134))
};
wrapPanelField.Children.Add(button);
}
stackPanel.Children.Add(wrapPanelField);
// 记录
for (int i = 0; i < row; i++)
{
wrapPanels[i] = new WrapPanel()
{
Margin = new Thickness()
{
Left = 10,
Top = 1,
Right = 10,
Bottom = 1
}
};
for (int j = 0; j < col; j++)
{
Button button = new Button()
{
Width = 60,
Content = features[i].GetAttributeValue(fieldNames[j]),
ToolTip = features[i].GetAttributeValue(fieldNames[j])
};
wrapPanels[i].Children.Add(button);
}
stackPanel.Children.Add(wrapPanels[i]);
}
ScrollViewer scrollViewer = new ScrollViewer();
scrollViewer.VerticalScrollBarVisibility = ScrollBarVisibility.Visible;
scrollViewer.HorizontalScrollBarVisibility = ScrollBarVisibility.Auto;
scrollViewer.Content = stackPanel;
var window = new Window();
window.Content = scrollViewer;
window.SizeToContent = SizeToContent.WidthAndHeight;
window.WindowStartupLocation = WindowStartupLocation.CenterScreen;
window.MaxHeight = 700;
window.MaxWidth = 1000;
window.Title = check[index].Content + "属性表";
window.Show();
}
private async void CreateFeatureCollectionLayerFromNYTimesArticles()
{
// Read the NY Times data from the text file and get back a list of each article.
// The format of each record/article will look like:
// [Article summary]~[Article abstract]~[Country name]~[Url to the NY times article]~[Url to an image about the NY times article]~[Date of NY Times news article]
// Ex:
// Netanyahu not happy with Cohen~A spokesman for Prime Minister Benjamin Netanyahu disagrees with Roger Cohen’s “pessimism.”~Israel~https://www.nytimes.com/2018/01/02/opinion/israel-future.html~https://www.nytimes.com/images/2017/12/29/opinion/29cohenWeb/29cohenWeb-thumbLarge.jpg~20180102
List <string> myNYTimesArticles = ReadTextFile3(_NEWSFILE);
// Get the collection of all the layers in the map.
var myMapAllLayers = MyMapView.Map.AllLayers;
// Create a place holder for the world countries feature layer.
FeatureLayer myFeatureLayer = null;
// Loop through all of the layers.
foreach (var myLayer in myMapAllLayers)
{
// Get the Id of the layer.
string myLayerName = myLayer.Id;
// If the layer id matches world countries set that to the feature layer.
if (myLayerName == "WorldCountries")
{
myFeatureLayer = (FeatureLayer)myLayer;
}
}
// Get the feature table from the world countries shape file feature layer.
FeatureTable myFeatureTable = myFeatureLayer.FeatureTable;
// Create a new query parameters.
QueryParameters myQueryParameters = new QueryParameters();
// Define the where clause for the query parameters. It will select all the records in the world countries shape file feature table.
myQueryParameters.WhereClause = "1 = 1";
// Execute the feature query and get the results back. It will select all the records in the world countries shape file feature table.
FeatureQueryResult myFeatureQueryResult = await myFeatureTable.QueryFeaturesAsync(myQueryParameters);
// Create the schema for the polygon feature collection table.
List <Field> myFeatureCollectionAttributeFields = new List <Field>();
// Create a field for the feature collection layer. It will contain a text field called area name that is the county name.
Field myAreaNameField = new Field(FieldType.Text, "AreaName", "Area Name", 50);
// Add the country name field to the list of fields that will be added to the feature collection table.
myFeatureCollectionAttributeFields.Add(myAreaNameField);
// Create the feature collection table based on the list of attribute fields, a polygons feature type
FeatureCollectionTable myFeatureCollectionTable = new FeatureCollectionTable(myFeatureCollectionAttributeFields, GeometryType.Polygon, SpatialReferences.Wgs84);
// Create the outline symbol for the country fill symbol.
SimpleLineSymbol mySimpleLineSymbol = new SimpleLineSymbol(SimpleLineSymbolStyle.Solid, Color.DarkBlue, 2);
// Create the fill symbol for the country. Solid yellow, with dark blue outline.
SimpleFillSymbol mySimpleFillSymbol = new SimpleFillSymbol(SimpleFillSymbolStyle.Solid, Color.Yellow, mySimpleLineSymbol);
// Set the renderer of the feature collection table to be the simple fill symbol.
myFeatureCollectionTable.Renderer = new SimpleRenderer(mySimpleFillSymbol);
// Loop through each feature in the returned feature query results of the world countries shape file
foreach (Feature myFeature in myFeatureQueryResult)
{
// Get the geometry (aka shape) for one feature.
Geometry myGeometry = myFeature.Geometry;
// Get the value (aka. the text for the record of a specific field).
var myValue = (string)myFeature.Attributes["NAME"];
// Loop through each NY Times article.
foreach (string oneNYTimesArticle in myNYTimesArticles)
{
// Remove an embedded double quotes that may be in or surrounding the country name in the NY Times data base.
char[] charsToTrim = { '"' };
string country = oneNYTimesArticle.Split('~')[2].Trim(charsToTrim);
// Find a match from the shape file country feature and the NY Times country name in the article.
if ((string)myValue == country)
{
// Create a new polygon feature, provide geometry and attribute values.
Feature polyFeature = myFeatureCollectionTable.CreateFeature();
polyFeature.SetAttributeValue(myAreaNameField, country);
polyFeature.Geometry = myGeometry;
// Add the new features to the appropriate feature collection table.
await myFeatureCollectionTable.AddFeatureAsync(polyFeature);
// Once we have found a matching country in the subset news article file that matches a shape file record
// there is no need to find another one since we have just created a record in the FeatureCollectionTable.
break;
}
}
}
// Create a feature collection and add the feature collection tables
FeatureCollection myFeatureCollection = new FeatureCollection();
myFeatureCollection.Tables.Add(myFeatureCollectionTable);
// Create a FeatureCollectionLayer
FeatureCollectionLayer myFeatureCollectionLayer = new FeatureCollectionLayer(myFeatureCollection);
myFeatureCollectionLayer.Id = "Joined"; // might not be needed
myFeatureCollectionLayer.Name = "JoinedFCL";
// When the layer loads, zoom the map centered on the feature collection
await myFeatureCollectionLayer.LoadAsync();
// Add the layer to the Map's Operational Layers collection
MyMapView.Map.OperationalLayers.Add(myFeatureCollectionLayer);
}
private async void renderBtn_Click(object sender, RoutedEventArgs e)
{
// 随机
Random rd = new Random();
UniqueValueRenderer regionRenderer = new UniqueValueRenderer();
// 需要找的field的字段名
regionRenderer.FieldNames.Add(chooseField);
// 获取值
QueryParameters query = new QueryParameters();
query.WhereClause = string.Format("upper(FID) >= 0");
FeatureQueryResult queryResult = await featureTable.QueryFeaturesAsync(query);
IEnumerator <Feature> resultFeatures = queryResult.GetEnumerator();
List <Object> featureValue = new List <Object>();
try
{
while (resultFeatures.MoveNext())
{
featureValue.Add((resultFeatures.Current).GetAttributeValue(chooseField));
}
featureValue = featureValue.Distinct().ToList();
}
catch
{
return;
}
// 将值分组
int count = featureValue.Count;
if (layer.FeatureTable.GeometryType == Esri.ArcGISRuntime.Geometry.GeometryType.Point)
{
for (int i = 0; i < count; i++)
{
int num = rd.Next(0, sort);
System.Drawing.Color tempColor = colorList[num];
SimpleMarkerSymbol tempPointSymbol = new SimpleMarkerSymbol()
{
Color = tempColor, Size = 6, Style = SimpleMarkerSymbolStyle.Circle
};
regionRenderer.UniqueValues.Add(new UniqueValue("null", "null", tempPointSymbol, featureValue[i]));
}
regionRenderer.DefaultSymbol = defaultPoint;
regionRenderer.DefaultLabel = "zero";
}
else if (layer.FeatureTable.GeometryType == Esri.ArcGISRuntime.Geometry.GeometryType.Polyline)
{
for (int i = 0; i < count; i++)
{
int num = rd.Next(0, sort);
System.Drawing.Color tempColor = colorList[num];
SimpleLineSymbol tempLineSymbol = new SimpleLineSymbol()
{
Style = SimpleLineSymbolStyle.Solid, Width = 5, Color = tempColor
};
regionRenderer.UniqueValues.Add(new UniqueValue("null", "null", tempLineSymbol, featureValue[i]));
}
regionRenderer.DefaultSymbol = defaultLine;
regionRenderer.DefaultLabel = "zero";
}
else if (layer.FeatureTable.GeometryType == Esri.ArcGISRuntime.Geometry.GeometryType.Polygon)
{
SimpleLineSymbol outLineSymbol = new SimpleLineSymbol()
{
Style = SimpleLineSymbolStyle.Solid, Width = 3, Color = System.Drawing.Color.Gray
};
for (int i = 0; i < count; i++)
{
int num = rd.Next(0, sort);
System.Drawing.Color tempColor = colorList[num];
SimpleFillSymbol tempFillSymbol = new SimpleFillSymbol(SimpleFillSymbolStyle.Solid, tempColor, outLineSymbol);
regionRenderer.UniqueValues.Add(new UniqueValue("null", "null", tempFillSymbol, featureValue[i]));
}
regionRenderer.DefaultSymbol = defaultFill;
regionRenderer.DefaultLabel = "zero";
}
layer.Renderer = regionRenderer;
}
private async void SolveRoutesButton_Click(object sender, EventArgs e)
{
// Holds locations of hospitals around San Diego.
List <Facility> facilities = new List <Facility>();
// Holds locations of hospitals around San Diego.
List <Incident> incidents = new List <Incident>();
// Create query parameters to select all features.
QueryParameters queryParams = new QueryParameters()
{
WhereClause = "1=1"
};
// Query all features in the facility table.
FeatureQueryResult facilityResult = await _facilityTable.QueryFeaturesAsync(queryParams);
// Add all of the query results to facilities as new Facility objects.
facilities.AddRange(facilityResult.ToList().Select(feature => new Facility((MapPoint)feature.Geometry)));
// Query all features in the incident table.
FeatureQueryResult incidentResult = await _incidentTable.QueryFeaturesAsync(queryParams);
// Add all of the query results to facilities as new Incident objects.
incidents.AddRange(incidentResult.ToList().Select(feature => new Incident((MapPoint)feature.Geometry)));
// Set facilities and incident in parameters.
ClosestFacilityParameters closestFacilityParameters = await _task.CreateDefaultParametersAsync();
closestFacilityParameters.SetFacilities(facilities);
closestFacilityParameters.SetIncidents(incidents);
try
{
// Use the task to solve for the closest facility.
ClosestFacilityResult result = await _task.SolveClosestFacilityAsync(closestFacilityParameters);
for (int i = 0; i < incidents.Count; i++)
{
// Get the index of the closest facility to incident. (i) is the index of the incident, [0] is the index of the closest facility.
int closestFacility = result.GetRankedFacilityIndexes(i)[0];
// Get the route to the closest facility.
ClosestFacilityRoute route = result.GetRoute(closestFacility, i);
// Display the route on the graphics overlay.
_myMapView.GraphicsOverlays[0].Graphics.Add(new Graphic(route.RouteGeometry, _routeSymbols[i % _routeSymbols.Count]));
}
// Disable the solve button.
_solveRoutesButton.Enabled = false;
_solveRoutesButton.SetTitleColor(UIColor.Gray, UIControlState.Disabled);
// Enable the reset button.
_resetButton.Enabled = true;
_resetButton.SetTitleColor(UIColor.Blue, UIControlState.Normal);
}
catch (Esri.ArcGISRuntime.Http.ArcGISWebException exception)
{
CreateErrorDialog("An ArcGIS web exception occurred.\n" + exception.Message);
}
}
private async void GeoViewTapped(object sender, Esri.ArcGISRuntime.UI.Controls.GeoViewInputEventArgs e)
{
try
{
// Disregard if not ready for edits.
if (_readyForEdits == EditState.NotReady)
{
return;
}
// If an edit is in process, finish it.
if (_readyForEdits == EditState.Editing)
{
// Hold a list of any selected features.
List <Feature> selectedFeatures = new List <Feature>();
// Get all selected features then clear selection.
foreach (FeatureLayer layer in MyMapView.Map.OperationalLayers)
{
// Get the selected features.
FeatureQueryResult layerFeatures = await layer.GetSelectedFeaturesAsync();
// FeatureQueryResult implements IEnumerable, so it can be treated as a collection of features.
selectedFeatures.AddRange(layerFeatures);
// Clear the selection.
layer.ClearSelection();
}
// Update all selected feature geometry.
foreach (Feature feature in selectedFeatures)
{
// Get a reference to the correct feature table for the feature.
GeodatabaseFeatureTable table = (GeodatabaseFeatureTable)feature.FeatureTable;
// Ensure the geometry type of the table is point.
if (table.GeometryType != GeometryType.Point)
{
continue;
}
// Set the new geometry.
feature.Geometry = e.Location;
try
{
// Update the feature in the table.
await table.UpdateFeatureAsync(feature);
}
catch (Esri.ArcGISRuntime.ArcGISException)
{
ShowStatusMessage("Feature must be within extent of geodatabase.");
}
}
// Update the edit state.
_readyForEdits = EditState.Ready;
// Enable the sync button.
SyncButton.IsEnabled = true;
// Update the help label.
MyHelpLabel.Text = "4. Click 'Sync' or edit more features";
}
// Otherwise, start an edit.
else
{
// Define a tolerance for use with identifying the feature.
double tolerance = 15 * MyMapView.UnitsPerPixel;
// Define the selection envelope.
Envelope selectionEnvelope = new Envelope(e.Location.X - tolerance, e.Location.Y - tolerance, e.Location.X + tolerance, e.Location.Y + tolerance);
// Define query parameters for feature selection.
QueryParameters query = new QueryParameters()
{
Geometry = selectionEnvelope
};
// Track whether any selections were made.
bool selectedFeature = false;
// Select the feature in all applicable tables.
foreach (FeatureLayer layer in MyMapView.Map.OperationalLayers)
{
FeatureQueryResult res = await layer.SelectFeaturesAsync(query, SelectionMode.New);
selectedFeature = selectedFeature || res.Any();
}
// Only update state if a feature was selected.
if (selectedFeature)
{
// Set the edit state.
_readyForEdits = EditState.Editing;
// Update the help label.
MyHelpLabel.Text = "3. Tap on the map to move the point";
}
}
}
catch (Exception ex)
{
ShowStatusMessage(ex.ToString());
}
}
private async void QuerySublayers_Click(object sender, System.Windows.RoutedEventArgs e)
{
// Clear selected features from the graphics overlay.
_selectedFeaturesOverlay.Graphics.Clear();
// If the population value entered is not numeric, warn the user and exit.
double populationNumber = 0.0;
if (!double.TryParse(PopulationTextBox.Text.Trim(), out populationNumber))
{
MessageBox.Show("The population value must be numeric.", "Query error");
return;
}
// Get the USA map image layer (the first and only operational layer in the map).
ArcGISMapImageLayer usaMapImageLayer = (ArcGISMapImageLayer)MyMapView.Map.OperationalLayers[0];
try
{
// Use a utility method on the map image layer to load all the sublayers and tables.
await usaMapImageLayer.LoadTablesAndLayersAsync();
// Get the sublayers of interest (skip 'Highways' since it doesn't have the POP2000 field).
ArcGISMapImageSublayer citiesSublayer = (ArcGISMapImageSublayer)usaMapImageLayer.Sublayers[0];
ArcGISMapImageSublayer statesSublayer = (ArcGISMapImageSublayer)usaMapImageLayer.Sublayers[2];
ArcGISMapImageSublayer countiesSublayer = (ArcGISMapImageSublayer)usaMapImageLayer.Sublayers[3];
// Get the service feature table for each of the sublayers.
ServiceFeatureTable citiesTable = citiesSublayer.Table;
ServiceFeatureTable statesTable = statesSublayer.Table;
ServiceFeatureTable countiesTable = countiesSublayer.Table;
// Create the query parameters that will find features in the current extent with a population greater than the value entered.
QueryParameters populationQuery = new QueryParameters
{
WhereClause = "POP2000 > " + PopulationTextBox.Text,
Geometry = MyMapView.GetCurrentViewpoint(ViewpointType.BoundingGeometry).TargetGeometry
};
// Query each of the sublayers with the query parameters.
FeatureQueryResult citiesQueryResult = await citiesTable.QueryFeaturesAsync(populationQuery);
FeatureQueryResult statesQueryResult = await statesTable.QueryFeaturesAsync(populationQuery);
FeatureQueryResult countiesQueryResult = await countiesTable.QueryFeaturesAsync(populationQuery);
// Display the selected cities in the graphics overlay.
SimpleMarkerSymbol citySymbol = new SimpleMarkerSymbol(SimpleMarkerSymbolStyle.Circle, Color.Red, 16);
foreach (Feature city in citiesQueryResult)
{
Graphic cityGraphic = new Graphic(city.Geometry, citySymbol);
_selectedFeaturesOverlay.Graphics.Add(cityGraphic);
}
// Display the selected counties in the graphics overlay.
SimpleLineSymbol countyLineSymbol = new SimpleLineSymbol(SimpleLineSymbolStyle.Dash, Color.Cyan, 2);
SimpleFillSymbol countySymbol = new SimpleFillSymbol(SimpleFillSymbolStyle.DiagonalCross, Color.Cyan, countyLineSymbol);
foreach (Feature county in countiesQueryResult)
{
Graphic countyGraphic = new Graphic(county.Geometry, countySymbol);
_selectedFeaturesOverlay.Graphics.Add(countyGraphic);
}
// Display the selected states in the graphics overlay.
SimpleLineSymbol stateLineSymbol = new SimpleLineSymbol(SimpleLineSymbolStyle.Solid, Color.DarkCyan, 6);
SimpleFillSymbol stateSymbol = new SimpleFillSymbol(SimpleFillSymbolStyle.Null, Color.Cyan, stateLineSymbol);
foreach (Feature state in statesQueryResult)
{
Graphic stateGraphic = new Graphic(state.Geometry, stateSymbol);
_selectedFeaturesOverlay.Graphics.Add(stateGraphic);
}
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString(), "Error");
}
}
private async void GeoViewTapped(object sender, GeoViewInputEventArgs e)
{
try
{
// Disregard if not ready for edits.
if (_readyForEdits == EditState.NotReady)
{
return;
}
// If an edit is in process, finish it.
if (_readyForEdits == EditState.Editing)
{
// Hold a list of any selected features.
List <Feature> selectedFeatures = new List <Feature>();
// Get all selected features then clear selection.
foreach (FeatureLayer layer in myMapView.Map.OperationalLayers)
{
// Get the selected features.
FeatureQueryResult layerFeatures = await layer.GetSelectedFeaturesAsync();
// FeatureQueryResult implements IEnumerable, so it can be treated as a collection of features.
selectedFeatures.AddRange(layerFeatures);
// Clear the selection.
layer.ClearSelection();
}
// Update all selected features' geometry.
foreach (Feature feature in selectedFeatures)
{
// Get a reference to the correct feature table for the feature.
GeodatabaseFeatureTable table = (GeodatabaseFeatureTable)feature.FeatureTable;
// Ensure the geometry type of the table is point.
if (table.GeometryType != GeometryType.Point)
{
continue;
}
// Set the new geometry.
feature.Geometry = e.Location;
// Update the feature in the table.
await table.UpdateFeatureAsync(feature);
}
// Update the edit state.
_readyForEdits = EditState.Ready;
// Enable the sync button.
mySyncButton.IsEnabled = true;
// Update the help label.
MyHelpLabel.Text = "4. Click 'Synchronize' or keep editing";
}
// Otherwise, start an edit.
else
{
// Define a tolerance for use with identifying the feature.
double tolerance = 15 * myMapView.UnitsPerPixel;
// Define the selection envelope.
Envelope selectionEnvelope = new Envelope(e.Location.X - tolerance, e.Location.Y - tolerance, e.Location.X + tolerance, e.Location.Y + tolerance);
// Define query parameters for feature selection.
QueryParameters query = new QueryParameters()
{
Geometry = selectionEnvelope
};
// Select the feature in all applicable tables.
foreach (FeatureLayer layer in myMapView.Map.OperationalLayers)
{
await layer.SelectFeaturesAsync(query, SelectionMode.New);
}
// Set the edit state.
_readyForEdits = EditState.Editing;
// Update the help label.
MyHelpLabel.Text = "3. Tap on the map to move the point";
}
}
catch (Exception ex)
{
await((Page)Parent).DisplayAlert("Error", ex.ToString(), "OK");
}
}
private async void OnMapViewTapped(object sender, GeoViewInputEventArgs evt)
{
try
{
// グラフィック オーバレイに追加したグラフィックを削除
myGraphicsOverlay.Graphics.Clear();
// シンボルの作成
var incidentPointSymbol = new SimpleMarkerSymbol(SimpleMarkerSymbolStyle.Circle, Colors.Red, 8);
var outLineSymbol = new SimpleLineSymbol(SimpleLineSymbolStyle.Solid, Color.FromArgb(100, 255, 183, 51), 2);
var bufferPolygonSymbol = new SimpleFillSymbol(SimpleFillSymbolStyle.Solid, Color.FromArgb(75, 255, 183, 51), outLineSymbol);
// クリック地点をマップに表示
var point = evt.Location;
var location = new Graphic(point, incidentPointSymbol);
myGraphicsOverlay.Graphics.Add(location);
// クリック地点を解析のパラメーターに設定
var incidentOneLocation = new MapPoint(evt.Location.X, evt.Location.Y, MyMapView.SpatialReference);
var incidentOne = new Incident(incidentOneLocation);
var incidentList = new List <Incident>();
incidentList.Add(incidentOne);
closestFacilityParameters.SetIncidents(incidentList);
// タップした地点から1000メートルのバッファーの円を作成し、グラフィックとして表示する
var buffer = GeometryEngine.Buffer(evt.Location, 1000);
var graphic = new Graphic(buffer, null, bufferPolygonSymbol);
myGraphicsOverlay.Graphics.Add(graphic);
// フィーチャの検索用のパラメーターを作成
var queryParams = new QueryParameters();
// 検索範囲を作成したバファーの円に指定
queryParams.Geometry = buffer;
// 検索範囲とフィーチャの空間的な関係性を指定（バファーの円の中にフィーチャが含まれる）
queryParams.SpatialRelationship = SpatialRelationship.Contains;
// フィーチャの検索を実行
FeatureQueryResult queryResult = await shelterLayer.FeatureTable.QueryFeaturesAsync(queryParams);
// 検索結果のフィーチャのリストを取得
var queryList = queryResult.ToList();
var facilities = new List <Facility>();
for (int i = 0; i < queryList.Count; ++i)
{
facilities.Add(new Facility((MapPoint)queryList[i].Geometry));
}
// パラメーターを設定し、最寄り施設検出解析を実行
closestFacilityParameters.SetFacilities(facilities);
closestFacility();
}
catch (Exception ex)
{
MessageBox.Show("解析の実行エラー " + ex.Message);
}
}
