/// <summary>
/// Creates a new instance of FeatureSet by opening disk-based shapefile.
/// </summary>
/// <param name="filename">Filename of shapefile to open (.shp extension).</param>
public FeatureSet(string filename)
{
if (!File.Exists(filename))
{
throw new FileNotFoundException("File not found: " + filename);
}
_shapefile = new Shapefile();
if (!_shapefile.Open(filename))
{
throw new ApplicationException("Failed to open shapefile: " + _shapefile.ErrorMessage());
}
}
/// <summary>
/// Creates a new disk-based shapefile and open it as new feature set.
/// </summary>
/// <returns>Feature set for newly created shapefile.</returns>
public static IFeatureSet CreateShapefile(string filename, GeometryType geomType,
ZValueType zValue = ZValueType.None)
{
if (geomType == GeometryType.None)
{
throw new ArgumentException("Invalid geometry type.");
}
var shpType = GeometryHelper.GeometryType2ShpType(geomType, zValue);
var sf = new Shapefile();
if (!sf.CreateNew(filename, shpType))
{
throw new ApplicationException("Failed to create shapefile: " + sf.ErrorMessage());
}
var fs = new FeatureSet(sf);
return(fs);
}