public FeatureDataSet getFeatureDataSetForLayer(VectorLayer layer)
{
FeatureDataSet fds = new FeatureDataSet();
if (layer.IsQueryEnabled)
{
layer.ExecuteIntersectionQuery(layer.Envelope, fds);
}
return(fds);
}
public JsonResult GetData(string layer, int z, int x, int y)
{
if (String.IsNullOrEmpty(layer))
{
throw new ArgumentNullException("layer");
}
Map map = ShapefileHelper.Spherical();
IQueryable <VectorLayer> coll = map.Layers
.AsQueryable()
.OfType <VectorLayer>()
.Where(l => l.Enabled && l.IsQueryEnabled)
.Where(l => String.Equals(l.LayerName, layer));
VectorLayer query = coll.SingleOrDefault();
if (query == null)
{
throw new ArgumentException("Layer not found: " + layer);
}
if (query.SRID != 4326)
{
throw new ArgumentException("Only EPSG:4326 supported");
}
using (Utf8Grid grid = new Utf8Grid(UtfGridResolution, x, y, z))
{
Envelope bbox = this.GetBoundingBoxInLatLngWithMargin(x, y, z);
var ds = new FeatureCollectionSet();
query.ExecuteIntersectionQuery(bbox, ds);
IEnumerable <GeoJSON> data = GeoJSONHelper.GetData(ds);
int i = 1;
foreach (GeoJSON val in data)
{
IGeometry geom = val.Geometry;
IDictionary <string, object> dict = val.Values;
grid.FillPolygon(geom, i, dict);
i = i + 1;
}
Utf8GridResults results = grid.CreateUtfGridJson();
return(this.Json(new { keys = results.Keys, data = results.Data, grid = results.Grid, }, JsonRequestBehavior.AllowGet));
}
}
public FeatureDataSet GetFeatureDataSet(LayerCollection layers, Coordinate coord, double areaSize)
{
IGeometry geometry = getGeometryFromPoint(coord, areaSize);
FeatureDataSet fds = new FeatureDataSet();
for (int i = 0; i < layers.Count; ++i)
{
if (layers[i] is VectorLayer)
{
VectorLayer layer = (VectorLayer)layers[i];
if (layer.IsQueryEnabled)
{
layer.ExecuteIntersectionQuery(geometry.EnvelopeInternal, fds);
}
}
}
return(fds);
}
public void TestMap()
{
var m = new Map(new Size(1024, 786))
{
BackColor = Color.FloralWhite
};
const string samplePath = @"D:\GIS\FileGDB\samples\data\Topo.gdb";
var p = new FileGdbProvider(samplePath);
foreach (var fc in p.GetFeatureClasses("\\USA"))
{
if (fc.StartsWith("\\USA\\T"))
{
continue;
}
Console.WriteLine(fc);
var pUse = new FileGdbProvider(samplePath)
{
Table = fc
};
var vl = new VectorLayer("Layer:" + fc, pUse)
{
SmoothingMode = SmoothingMode.HighQuality,
Style = { Fill = RandomBrush(), Line = RandomPen() }
};
m.Layers.Add(vl);
var fds = new FeatureDataSet();
vl.ExecuteIntersectionQuery(vl.Envelope, fds);
fds.Tables[0].TableName = fc;
var res = fds.Tables[0].Rows[0].ItemArray;
foreach (DataColumn col in fds.Tables[0].Columns)
{
Console.Write(string.Format("{0} [{1}], ", col.ColumnName, col.DataType));
}
Console.WriteLine();
foreach (var item in res)
{
Console.Write(string.Format(CultureInfo.InvariantCulture, "{0}, ", item));
}
Console.WriteLine();
Console.WriteLine(pUse.GetGeometryByID(1));
var r = pUse.GetFeature(1);
foreach (var item in r.ItemArray)
{
Console.Write(string.Format(CultureInfo.InvariantCulture, "{0}, ", item));
}
Console.WriteLine();
Console.WriteLine();
}
Console.WriteLine();
p.Dispose();
m.ZoomToExtents();
var b = m.GetMap();
b.Save("fgdb-usa-states.png");
//var fds = new FeatureDataSet();
//lc.ExecuteIntersectionQuery(m.GetExtents().GetCentroid(), fds);
//fds.Tables[0].TableName = lc.LayerName;
//fds.Tables[0].WriteXml(Console.Out);
}
