/// <summary>
/// Opens a shapefile
/// </summary>
/// <param name="fileName">The string fileName of the point shapefile to load</param>
/// <param name="progressHandler">Any valid implementation of the DotSpatial.Data.IProgressHandler</param>
public void Open(string fileName, IProgressHandler progressHandler)
{
//JK - handle case when filename doesn't exist
if (!File.Exists(fileName))
{
Attributes = new AttributeTable();
Header = new ShapefileHeader { FileLength = 100, ShapeType = ShapeType.Point };
FeatureType = FeatureType.Point;
return;
}
IndexMode = true;
Filename = fileName;
Header = new ShapefileHeader(fileName);
CoordinateType = CoordinateType.Regular;
if (Header.ShapeType == ShapeType.PointM)
{
CoordinateType = CoordinateType.M;
}
if (Header.ShapeType == ShapeType.PointZ)
{
CoordinateType = CoordinateType.Z;
}
MyExtent = Header.ToExtent();
Name = Path.GetFileNameWithoutExtension(fileName);
Attributes.Open(fileName);
FillPoints(fileName, progressHandler);
ReadProjection();
}
/// <summary>
/// Opens a shapefile
/// </summary>
/// <param name="fileName">The string fileName of the line shapefile to load</param>
/// <param name="progressHandler">Any valid implementation of the DotSpatial.Data.IProgressHandler</param>
public void Open(string fileName, IProgressHandler progressHandler)
{
if (!File.Exists(fileName))
{
Attributes = new AttributeTable();
Header = new ShapefileHeader { FileLength = 100, ShapeType = ShapeType.PolyLine };
FeatureType = FeatureType.Line;
return;
}
Filename = fileName;
FeatureType = FeatureType.Line;
Header = new ShapefileHeader(fileName);
CoordinateType = CoordinateType.Regular;
IndexMode = true;
if (Header.ShapeType == ShapeType.PolyLineM)
{
CoordinateType = CoordinateType.M;
}
if (Header.ShapeType == ShapeType.PolyLineZ)
{
CoordinateType = CoordinateType.Z;
}
MyExtent = Header.ToExtent();
Name = Path.GetFileNameWithoutExtension(fileName);
Attributes.Open(fileName);
FillLines(fileName, progressHandler);
ReadProjection();
}
/// <summary>
/// Creates a new instance of a shapefile based on a fileName
/// </summary>
/// <param name="fileName">File name</param>
/// <param name="featureType">Feature type</param>
protected Shapefile(string fileName, FeatureType featureType)
: base(featureType)
{
Attributes = new AttributeTable();
Header = new ShapefileHeader();
Open(fileName, null);
}
/// <summary>
/// Creates a new instance of a PolygonShapefile for in-ram handling only.
/// </summary>
public PolygonShapefile()
: base(FeatureType.Polygon)
{
Attributes = new AttributeTable();
Header = new ShapefileHeader();
Header.FileLength = 100;
Header.ShapeType = ShapeType.Polygon;
FeatureType = FeatureType.Polygon;
}
/// <summary>
/// Creates a new ShapefileReader tailored to read a particular file.
/// </summary>
/// <param name="filename"></param>
/// <returns></returns>
public ShapefileReader(string filename)
{
Filename = filename;
_attributeTable = new AttributeTable(filename);
ShapefileHeader header = new ShapefileHeader(filename);
//if (header.ShapeType == ShapeType.Polygon ||
// header.ShapeType == ShapeType.PolygonM ||
// header.ShapeType == ShapeType.PolygonZ)
//{
// _shapeSource = new PolygonShapefileShapeSource(filename);
//}
// To Do: Implement alternate shape sources here.
_fieldCount = -1;
}
/// <summary>
/// Creates a new instance of a LineShapefile for in-ram handling only.
/// </summary>
public LineShapefile()
: base(FeatureType.Line)
{
Attributes = new AttributeTable();
Header = new ShapefileHeader { FileLength = 100, ShapeType = ShapeType.PolyLine };
}
/// <summary>
/// Creates a new instance of a MultiPointShapefile for in-ram handling only.
/// </summary>
public MultiPointShapefile()
: base(FeatureType.MultiPoint)
{
Attributes = new AttributeTable();
Header = new ShapefileHeader { FileLength = 100, ShapeType = ShapeType.MultiPoint };
}
private void Configure()
{
Attributes = new AttributeTable();
_header = new ShapefileHeader();
IndexMode = true;
}
/// <summary>
/// Creates a new instance of a PolygonShapefile for in-ram handling only.
/// </summary>
public PolygonShapefile()
: base(FeatureType.Polygon)
{
Attributes = new AttributeTable();
Header = new ShapefileHeader { FileLength = 100, ShapeType = ShapeType.Polygon };
}
private AttributeTable GetAttributeTable(string fileName)
{
var at = new AttributeTable();
at.Open(fileName, _deletedRows);
if (_trackDeletedRows)
_deletedRows = at.DeletedRows;
return at;
}
