本文整理汇总了C#中FeatureDataSet类的典型用法代码示例。如果您正苦于以下问题：C# FeatureDataSet类的具体用法？C# FeatureDataSet怎么用？C# FeatureDataSet使用的例子？那么, 这里精选的类代码示例或许可以为您提供帮助。
FeatureDataSet类属于命名空间，在下文中一共展示了FeatureDataSet类的15个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: GetData
/// <summary>
/// Method to convert a <see cref="T:SharpMap.Data.FeatureDataSet"/> to a series of <see cref="GeoJSON"/> objects
/// </summary>
/// <param name="data">The feature dataset</param>
/// <returns>A series of <see cref="GeoJSON"/> objects</returns>
public static IEnumerable<GeoJSON> GetData(FeatureDataSet data)
{
if (data == null)
throw new ArgumentNullException("data");
using (data)
{
foreach (FeatureDataTable table in data.Tables)
{
var columns = table.Columns;
var keys = new string[columns.Count];
for (var i = 0; i < columns.Count; i++)
keys[i] = columns[i].ColumnName;
var rows = table.Rows;
for (int i = 0; i < rows.Count; i++)
{
var row = (FeatureDataRow)rows[i];
var geometry = row.Geometry;
var values = new Dictionary<string, object>();
for (var j = 0; j < keys.Length; j++)
values.Add(keys[j], row[j]);
yield return new GeoJSON(geometry, values);
}
}
}
}示例2: OnExecuteIntersectionQuery
/// <summary>
/// Method to perform the intersection query against the data source
/// </summary>
/// <param name="geom">The geometry to use as filter</param>
/// <param name="ds">The feature data set to store the results in</param>
protected override void OnExecuteIntersectionQuery(IGeometry geom, FeatureDataSet ds)
{
ExecuteIntersectionQuery(geom.EnvelopeInternal, ds);
//index of last added feature data table
var index = ds.Tables.Count - 1;
if (index < 0) return;
var res = CloneTableStructure(ds.Tables[index]);
res.BeginLoadData();
var fdt = ds.Tables[index];
foreach (FeatureDataRow row in fdt.Rows)
{
if (PreparedGeometry.Intersects(row.Geometry))
{
var fdr = (FeatureDataRow)res.LoadDataRow(row.ItemArray, true);
fdr.Geometry = row.Geometry;
}
}
res.EndLoadData();
ds.Tables.RemoveAt(index);
ds.Tables.Add(res);
}示例3: ExecuteIntersectionQuery
public override void ExecuteIntersectionQuery(BoundingBox box, FeatureDataSet ds)
{
var table = CreateTable();
table.BeginLoadData();
foreach (var kvp in Matrix)
{
var id = kvp.Key;
if (box.Intersects(kvp.Value.EnvelopeInternal))
{
var val = Matrix[kvp.Key, MatrixVector];
if (!Valid(val))
continue;
var row =
(FeatureDataRow)
table.LoadDataRow(new object[] { id, val }, LoadOption.Upsert);
var sval = Scale(val);
row.Geometry = CreateCircle(kvp.Value, sval);
}
}
table.EndLoadData();
ds.Tables.Add(table);
}示例4: TestMap
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.bmp");
//var fds = new FeatureDataSet();
//lc.ExecuteIntersectionQuery(m.GetExtents().GetCentroid(), fds);
//fds.Tables[0].TableName = lc.LayerName;
//fds.Tables[0].WriteXml(Console.Out);
}示例5: DataSetToFeatures
public static IEnumerable<IFeature> DataSetToFeatures(FeatureDataSet dataSet)
{
var features = new Features();
foreach (FeatureDataTable table in dataSet.Tables)
{
foreach (FeatureDataRow row in table)
{
IFeature feature = features.New();
feature.Geometry = row.Geometry;
foreach (DataColumn column in table.Columns)
feature[column.ColumnName] = row[column.ColumnName];
features.Add(feature);
}
}
return features;
}示例6: ExecuteIntersectionQuery
/// <summary>
/// Returns all features with the view box
/// </summary>
/// <param name="bbox">view box</param>
/// <param name="ds">FeatureDataSet to fill data into</param>
public override void ExecuteIntersectionQuery(BoundingBox bbox, FeatureDataSet ds)
{
using (SqlConnection conn = new SqlConnection(ConnectionString))
{
//Get bounding box string
string strBbox = GetBoxFilterStr(bbox);
string strSQL = String.Format(
"SELECT g.* FROM {0} g {1} WHERE ",
Table, BuildTableHints());
if (!String.IsNullOrEmpty(DefinitionQuery))
strSQL += DefinitionQuery + " AND ";
strSQL += strBbox;
using (SqlDataAdapter adapter = new SqlDataAdapter(strSQL, conn))
{
conn.Open();
System.Data.DataSet ds2 = new System.Data.DataSet();
adapter.Fill(ds2);
conn.Close();
if (ds2.Tables.Count > 0)
{
FeatureDataTable fdt = new FeatureDataTable(ds2.Tables[0]);
foreach (System.Data.DataColumn col in ds2.Tables[0].Columns)
if (col.ColumnName != GeometryColumn)
fdt.Columns.Add(col.ColumnName, col.DataType, col.Expression);
foreach (System.Data.DataRow dr in ds2.Tables[0].Rows)
{
FeatureDataRow fdr = fdt.NewRow();
foreach (System.Data.DataColumn col in ds2.Tables[0].Columns)
if (col.ColumnName != GeometryColumn)
fdr[col.ColumnName] = dr[col];
fdr.Geometry = SqlGeometryConverter.ToSharpMapGeometry((Microsoft.SqlServer.Types.SqlGeometry)dr[GeometryColumn]);
fdt.AddRow(fdr);
}
ds.Tables.Add(fdt);
}
}
}
}示例7: ExecuteIntersectionQuery
public override void ExecuteIntersectionQuery(Envelope bbox, FeatureDataSet ds)
{
var fdt = CreateTable();
fdt.BeginLoadData();
foreach (var relation in Matrix.Relations(RestrictId))
{
var origin = relation.Key;
var destin = relation.Value;
var box = origin.Value.EnvelopeInternal;
box.ExpandToInclude(destin.Value.EnvelopeInternal);
if (!bbox.Intersects(box))
continue;
var val = Matrix[origin.Key, destin.Key];
if (!Valid(val)) continue;
var fdr = (FeatureDataRow)fdt.LoadDataRow(new object[] { CreateOid(origin.Key, destin.Key), val }, true);
var sval = Scale(val);
if (origin.Key == destin.Key)
{
fdr.Geometry = CreateCircle(origin.Value, sval);
}
else
{
fdr.Geometry = CreateLoad(origin.Value, destin.Value, sval);
val = Matrix[destin.Key, origin.Key];
if (Valid(val))
{
sval = Scale(val);
fdr = (FeatureDataRow)fdt.LoadDataRow(new object[] { CreateOid(destin.Key, origin.Key), val }, true);
fdr.Geometry = CreateLoad(destin.Value, origin.Value, sval);
}
}
}
fdt.EndLoadData();
ds.Tables.Add(fdt);
}示例8: ExecuteIntersectionQuery
/// <summary>
/// Returns the data associated with all the geometries that are intersected by 'geom'.
/// </summary>
/// <param name="geom">The geometry.</param>
/// <param name="ds">The <see cref="FeatureDataSet"/> to fill data into.</param>
public override void ExecuteIntersectionQuery(Geometry geom, FeatureDataSet ds)
{
//Use the spatial index to get a list of features whose boundingbox intersects bbox
var objectlist = GetObjectIDsInView(geom.GetBoundingBox());
if (objectlist.Count == 0)
return;
var dt = DbaseFile.NewTable;
var preparedGeometry = new NetTopologySuite.Geometries.Prepared.PreparedGeometryFactory()
.Create(Converters.NTS.GeometryConverter.ToNTSGeometry(geom, _factory));
for (int i = 0; i < objectlist.Count; i++)
{
var testGeom = GetGeometryByID(objectlist[i]);
var testNtsGeom = Converters.NTS.GeometryConverter.ToNTSGeometry(testGeom, _factory);
if (preparedGeometry.Intersects(testNtsGeom))
{
var fdr = GetFeature(objectlist[i], dt);
if (fdr != null) dt.AddRow(fdr);
}
}
if (dt.Rows.Count > 0)
ds.Tables.Add(dt);
}示例9: ExecuteIntersectionQuery
/// <summary>
/// Returns all features with the view box
/// </summary>
/// <param name="bbox">view box</param>
/// <param name="ds">FeatureDataSet to fill data into</param>
public void ExecuteIntersectionQuery(SharpMap.Geometries.BoundingBox bbox, FeatureDataSet ds)
{
List<Geometries.Geometry> features = new List<SharpMap.Geometries.Geometry>();
using (System.Data.OleDb.OleDbConnection conn = new OleDbConnection(_ConnectionString))
{
string strSQL = "Select * FROM " + this.Table + " WHERE ";
if (_defintionQuery != null && _defintionQuery != "") //If a definition query has been specified, add this as a filter on the query
strSQL += _defintionQuery + " AND ";
//Limit to the points within the boundingbox
strSQL += this.XColumn + " BETWEEN " + bbox.Left.ToString(SharpMap.Map.numberFormat_EnUS) + " AND " + bbox.Right.ToString(SharpMap.Map.numberFormat_EnUS) + " AND " + this.YColumn +
" BETWEEN " + bbox.Bottom.ToString(SharpMap.Map.numberFormat_EnUS) + " AND " + bbox.Top.ToString(SharpMap.Map.numberFormat_EnUS);
using (System.Data.OleDb.OleDbDataAdapter adapter = new OleDbDataAdapter(strSQL, conn))
{
conn.Open();
System.Data.DataSet ds2 = new System.Data.DataSet();
adapter.Fill(ds2);
conn.Close();
if (ds2.Tables.Count > 0)
{
FeatureDataTable fdt = new FeatureDataTable(ds2.Tables[0]);
foreach (System.Data.DataColumn col in ds2.Tables[0].Columns)
fdt.Columns.Add(col.ColumnName, col.DataType, col.Expression);
foreach (System.Data.DataRow dr in ds2.Tables[0].Rows)
{
SharpMap.Data.FeatureDataRow fdr = fdt.NewRow();
foreach (System.Data.DataColumn col in ds2.Tables[0].Columns)
fdr[col.ColumnName] = dr[col];
if (dr[this.XColumn] != DBNull.Value && dr[this.YColumn] != DBNull.Value)
fdr.Geometry = new SharpMap.Geometries.Point((double)dr[this.XColumn], (double)dr[this.YColumn]);
fdt.AddRow(fdr);
}
ds.Tables.Add(fdt);
}
}
}
}示例10: ExecuteIntersectionQuery
/// <summary>
/// Returns the features that intersects with 'geom'
/// </summary>
/// <param name="geom"></param>
/// <param name="ds">FeatureDataSet to fill data into</param>
public void ExecuteIntersectionQuery(SharpMap.Geometries.Geometry geom, FeatureDataSet ds)
{
List<Geometries.Geometry> features = new List<SharpMap.Geometries.Geometry>();
using (SqlConnection conn = new SqlConnection(this.ConnectionString))
{
string strGeom;
if (this.TargetSRID > 0 && this.SRID > 0 && this.SRID != this.TargetSRID)
strGeom = "ST.Transform(ST.GeomFromText('" + geom.AsText() + "'," + this.TargetSRID.ToString() + ")," + this.SRID.ToString() + ")";
else
strGeom = "ST.GeomFromText('" + geom.AsText() + "', " + this.SRID.ToString() + ")";
string strSQL = "SELECT " + this.FeatureColumns + ", ST.AsBinary(" + this.BuildGeometryExpression() + ") As sharpmap_tempgeometry ";
strSQL += "FROM ST.RelateQuery" + this.BuildSpatialQuerySuffix() + "(" + strGeom + ", 'intersects')";
if (!String.IsNullOrEmpty(this.DefinitionQuery))
strSQL += " WHERE " + this.DefinitionQuery;
if (!String.IsNullOrEmpty(this.OrderQuery))
strSQL += " ORDER BY " + this.OrderQuery;
using (SqlDataAdapter adapter = new SqlDataAdapter(strSQL, conn))
{
conn.Open();
adapter.Fill(ds);
conn.Close();
if (ds.Tables.Count > 0)
{
FeatureDataTable fdt = new FeatureDataTable(ds.Tables[0]);
foreach (System.Data.DataColumn col in ds.Tables[0].Columns)
if (col.ColumnName != this.GeometryColumn && !col.ColumnName.StartsWith(this.GeometryColumn + "_Envelope_") && col.ColumnName != "sharpmap_tempgeometry")
fdt.Columns.Add(col.ColumnName, col.DataType, col.Expression);
foreach (System.Data.DataRow dr in ds.Tables[0].Rows)
{
SharpMap.Data.FeatureDataRow fdr = fdt.NewRow();
foreach (System.Data.DataColumn col in ds.Tables[0].Columns)
if (col.ColumnName != this.GeometryColumn && !col.ColumnName.StartsWith(this.GeometryColumn + "_Envelope_") && col.ColumnName != "sharpmap_tempgeometry")
fdr[col.ColumnName] = dr[col];
if (dr["sharpmap_tempgeometry"] != DBNull.Value)
fdr.Geometry = SharpMap.Converters.WellKnownBinary.GeometryFromWKB.Parse((byte[])dr["sharpmap_tempgeometry"]);
fdt.AddRow(fdr);
}
ds.Tables.Add(fdt);
}
}
}
}示例11: GetFeaturesInView
public void GetFeaturesInView(BoundingBox bbox, FeatureDataSet ds)
{
ExecuteIntersectionQuery(bbox, ds);
}示例12: ExecuteIntersectionQuery
/// <summary>
/// Returns all features with the view box
/// </summary>
/// <param name="bbox">view box</param>
/// <param name="ds">FeatureDataSet to fill data into</param>
public void ExecuteIntersectionQuery(BoundingBox bbox, FeatureDataSet ds)
{
List<Geometry> features = new List<Geometry>();
using (OracleConnection conn = new OracleConnection(_ConnectionString))
{
//Get bounding box string
string strBbox = GetBoxFilterStr(bbox);
string strSQL = "SELECT g.*, g." + GeometryColumn + ".Get_WKB() AS sharpmap_tempgeometry ";
strSQL += "FROM " + Table + " g WHERE ";
if (!String.IsNullOrEmpty(_defintionQuery))
strSQL += DefinitionQuery + " AND ";
strSQL += strBbox;
using (OracleDataAdapter adapter = new OracleDataAdapter(strSQL, conn))
{
conn.Open();
DataSet ds2 = new DataSet();
adapter.Fill(ds2);
conn.Close();
if (ds2.Tables.Count > 0)
{
FeatureDataTable fdt = new FeatureDataTable(ds2.Tables[0]);
foreach (DataColumn col in ds2.Tables[0].Columns)
if (col.ColumnName != GeometryColumn && col.ColumnName != "sharpmap_tempgeometry")
fdt.Columns.Add(col.ColumnName, col.DataType, col.Expression);
foreach (DataRow dr in ds2.Tables[0].Rows)
{
FeatureDataRow fdr = fdt.NewRow();
foreach (DataColumn col in ds2.Tables[0].Columns)
if (col.ColumnName != GeometryColumn && col.ColumnName != "sharpmap_tempgeometry")
fdr[col.ColumnName] = dr[col];
fdr.Geometry = GeometryFromWKB.Parse((byte[]) dr["sharpmap_tempgeometry"]);
fdt.AddRow(fdr);
}
ds.Tables.Add(fdt);
}
}
}
}示例13: GetFeaturesInView
public void GetFeaturesInView(BoundingBox bbox, FeatureDataSet ds)
{
GetFeaturesInView(bbox, ds);
}示例14: ExecuteIntersectionQuery
public override void ExecuteIntersectionQuery(Envelope box, FeatureDataSet ds)
{
GetNonSpatialColumns();
using (var conn = GetConnection(ConnectionString))
{
var strSql = "SELECT " + _columns + ", \"" + GeometryColumn + "\" AS \"_smtmp_\" ";
strSql += "FROM " + Table + " WHERE ";
// Attribute constraint
if (!String.IsNullOrEmpty(_definitionQuery))
strSql += DefinitionQuery + " AND ";
// Spatial constraint
strSql += GetBoxClause(box);
using (var cmd = new SQLiteCommand(strSql, conn))
{
using (var reader = cmd.ExecuteReader())
{
var geomIndex = reader.FieldCount - 1;
var fdt = CreateTableFromReader(reader, geomIndex);
var dataTransfer = new object[geomIndex];
var geoReader = new GaiaGeoReader(Factory.CoordinateSequenceFactory, Factory.PrecisionModel,
_ordinates);
fdt.BeginLoadData();
while (reader.Read())
{
IGeometry g = null;
if (!reader.IsDBNull(geomIndex))
g = geoReader.Read((byte[])reader.GetValue(geomIndex));
//No geometry, no feature!
if (g == null)
continue;
//If not using RTree index we need to filter in code
if (_spatiaLiteIndex != SpatiaLiteIndex.RTree && !box.Intersects(g.EnvelopeInternal))
continue;
//Get all the attribute data
var count = reader.GetValues(dataTransfer);
System.Diagnostics.Debug.Assert(count == dataTransfer.Length);
var fdr = (FeatureDataRow)fdt.LoadDataRow(dataTransfer, true);
fdr.Geometry = g;
}
reader.Close();
fdt.EndLoadData();
ds.Tables.Add(fdt);
}
}
}
}示例15: ExecuteIntersectionQuery
/// <summary>
///
/// </summary>
/// <param name="box"></param>
/// <param name="ds"></param>
public void ExecuteIntersectionQuery(SharpMap.Geometries.BoundingBox box, FeatureDataSet ds)
{
// Identifies all the features within the given BoundingBox
GisSharpBlog.NetTopologySuite.Geometries.Envelope envelope = GeometryConverter.ToNTSEnvelope(box);
List<GisSharpBlog.NetTopologySuite.Features.Feature> results = new List<GisSharpBlog.NetTopologySuite.Features.Feature>(features.Count);
foreach (GisSharpBlog.NetTopologySuite.Features.Feature feature in features)
if (envelope.Intersects(feature.Geometry.EnvelopeInternal))
results.Add(feature);
// Fill DataSet
SharpMap.Data.FeatureDataTable dataTable = CreateFeatureDataTable();
foreach (GisSharpBlog.NetTopologySuite.Features.Feature feature in results)
CreateNewRow(dataTable, feature);
ds.Tables.Add(dataTable);
}