/// <summary>
/// Generates an GeoJson (.geojson) file with grid statistics on species observation counts.
/// </summary>
/// <returns>A .geojson file.</returns>
public FileResult GridStatisticsOnSpeciesObservationCountsAsGeoJson()
{
SpeciesObservationGridCalculator resultCalculator = null;
string geojson = null;
CalculatedDataItem <FeatureCollection> result;
resultCalculator = new SpeciesObservationGridCalculator(GetCurrentUser(), SessionHandler.MySettings);
geojson = resultCalculator.GetSpeciesObservationGridAsGeoJson();
SetServerDone();
byte[] bytes = System.Text.Encoding.UTF8.GetBytes(geojson);
return(File(
bytes,
"application/json",
FilenameGenerator.CreateFilename("SpeciesObservationCountsGrid", FileType.GeoJSON)));
}
public static string GetLayerGeojson(
IUserContext currentUser,
int layerId,
CoordinateSystemId coordinateSystemId,
IDictionary <string, object> parameters,
out string layerName,
MapExportModel.Extent mapExtent)
{
string geoJson = null;
layerName = null;
if (layerId == null)
{
return(null);
}
if (layerId >= CustomLayersStartLayerId)
{
var viewManager = new WfsLayersViewManager(currentUser, SessionHandler.MySettings);
var layer = viewManager.GetWfsLayers().FirstOrDefault(l => l.Id == layerId);
layerName = layer.Name;
if (layer.IsFile)
{
geoJson = JsonConvert.SerializeObject(MySettingsManager.GetMapDataFeatureCollection(currentUser, layer.GeometryName, coordinateSystemId));
}
else
{
var url = WFSFilterUtils.GetResultingUrl(layer.ServerUrl, layer.TypeName, "1.1.0", layer.Filter, "application%2Fjson", null, string.Format("EPSG%3A{0}", coordinateSystemId.Srid()));
var request = WebRequest.Create(url);
request.Credentials = CredentialCache.DefaultCredentials;
// Get the response.
using (var response = request.GetResponse())
{
using (var dataStream = response.GetResponseStream())
{
using (var reader = new StreamReader(dataStream))
{
geoJson = reader.ReadToEnd();
reader.Close();
}
}
response.Close();
}
}
}
else
{
switch (layerId)
{
case SpeciesRichnessGridLayerId:
var taxonGridCalculator = new TaxonGridCalculator(currentUser, SessionHandler.MySettings);
geoJson = taxonGridCalculator.GetTaxonGridAsGeoJson();
var attribute = (string)(parameters.ContainsKey("attribute") ? parameters["attribute"] : null);
layerName = Resource.ResultViewSpeciesRichnessGridMapLayerName;
if (attribute != null)
{
switch (attribute.ToLower().Trim())
{
case "speciescount":
layerName = Resource.ResultDownloadSpeciesRichnessGridMap;
break;
case "observationcount":
layerName = Resource.ResultDownloadObservationsGridMap;
break;
}
}
break;
case SpeciesObservationGridMapLayerId:
case EooConvexHullLayerId:
case EooConcaveHullLayerId:
var speciesObservationGridCalculator = new SpeciesObservationGridCalculator(currentUser, SessionHandler.MySettings);
if (layerId == SpeciesObservationGridMapLayerId)
{
geoJson = speciesObservationGridCalculator.GetSpeciesObservationGridAsGeoJson();
layerName = Resource.ResultViewSpeciesObservationGridMap;
}
else
{
var alphaValue = (int?)(parameters.ContainsKey("alphaValue") ? parameters["alphaValue"] : null);
var useCenterPoint = (bool?)(parameters.ContainsKey("useCenterPoint") ? parameters["useCenterPoint"] : null);
geoJson = speciesObservationGridCalculator.GetSpeciesObservationAOOEOOAsGeoJson(
layerId == EooConcaveHullLayerId ? alphaValue : 0,
useCenterPoint ?? true);
layerName = Resource.MapEOOLayer;
}
break;
case ObservationsLayerId: //Observations
case SpeciesObservationClusterPointMapLayerId:
SpeciesObservationResultCalculator resultCalculator = null;
try
{
var displayCoordinateSystemId = SessionHandler.MySettings.Presentation.Map.PresentationCoordinateSystemId;
resultCalculator = new SpeciesObservationResultCalculator(currentUser, SessionHandler.MySettings);
geoJson = resultCalculator.GetSpeciesObservationsAsGeoJson(displayCoordinateSystemId);
layerName = Resource.MapLayerObservations;
}
catch (Exception)
{
}
break;
}
}
return(geoJson);
}