public Feature[] GetFeatures(string fname)
{
if (fname == null)
{
return(null);
}
IVectorFeatureDataReader dr = VectorDataReaderFactory.GetUniversalDataReader(fname) as IVectorFeatureDataReader;
if (dr == null)
{
return(null);
}
try
{
Feature[] fets = dr.FetchFeatures();
if (fets == null || fets.Length == 0)
{
return(null);
}
List <Feature> features = new List <Feature>();
foreach (Feature fet in fets)
{
if (fet.Geometry is ShapePolygon)
{
features.Add(fet);
}
}
return(features != null?features.ToArray() : null);
}
finally
{
dr.Dispose();
}
}
public Feature[] LoadFeatures()
{
if (_urls == null)
{
return(null);
}
List <Feature> fets = new List <Feature>();
IVectorFeatureDataReader dr = null;
Feature[] temp = null;
foreach (string url in _urls)
{
dr = VectorDataReaderFactory.GetUniversalDataReader(url) as IVectorFeatureDataReader;
if (dr == null)
{
continue;
}
try
{
temp = dr.FetchFeatures();
if (temp == null || temp.Length == 0)
{
continue;
}
fets.AddRange(temp);
}
finally
{
dr.Dispose();
}
}
return(fets.Count == 0 ? null : fets.ToArray());
}
public override void EndRead()
{
try
{
if (_reader != null)
{
_reader.Dispose();
_reader = null;
}
}
finally
{
_readIsFinished = true;
_isReady = false;
}
}
public void Dispose()
{
if (_vdr != null)
{
_vdr.Dispose();
//_vdr = null;
}
}
public ShapePolygon[] GetGeometry(List <string> retNames, string nameField)
{
string fname = FindVector();
if (fname == null)
{
return(null);
}
IVectorFeatureDataReader dr = VectorDataReaderFactory.GetUniversalDataReader(fname) as IVectorFeatureDataReader;
if (dr == null)
{
return(null);
}
try
{
Feature[] fets;
if (_where != null)
{
fets = dr.FetchFeatures((f) => { return(_where(f)); });
}
else
{
Feature f = dr.FetchFirstFeature();
if (f != null)
{
fets = new Feature[] { f }
}
;
else
{
return(null);
}
}
if (fets == null || fets.Length == 0)
{
return(null);
}
List <ShapePolygon> geometrys = new List <ShapePolygon>();
foreach (Feature fet in fets)
{
geometrys.Add(fet.Geometry as ShapePolygon);
if (retNames != null)
{
retNames.Add(fet.GetFieldValue(nameField) ?? string.Empty);
}
}
return(geometrys.ToArray());
}
finally
{
dr.Dispose();
}
}
private void LoadMaskTemplateFromShapeFile(string filename)
{
IVectorFeatureDataReader vdr = VectorDataReaderFactory.GetUniversalDataReader(filename) as IVectorFeatureDataReader;
if (vdr == null)
{
MessageBox.Show("输入的矢量文件\"" + filename + "\"格式错误,无法作为模板装入!");
return;
}
if (vdr.ShapeType != enumShapeType.Polygon)
{
MessageBox.Show("不支持非多边形矢量文件作为模板装入!");
return;
}
try
{
int fetCount = vdr.FeatureCount;
if (fetCount == 1)
{
SetMaskTemplateMatrixFromFeature(filename, vdr.Features[0]);
}
else
{
using (frmFeatureSelector frm = new frmFeatureSelector(vdr.Features))
{
//frm.TopMost = true;
if (frm.ShowDialog() == DialogResult.OK)
{
txtFileName.Text = filename;
Feature[] fets = frm.GetSelectedVectorFeatures();
if (fets == null || fets.Length == 0)
{
return;
}
for (int i = 0; i < fets.Length; i++)
{
SetMaskTemplateMatrixFromFeature(filename, fets[i]);
}
}
}
}
}
finally
{
if (vdr != null)
{
vdr.Dispose();
}
}
}
private void LoadMaskTemplateFromShapeFile(string filename)
{
IVectorFeatureDataReader vdr = VectorDataReaderFactory.GetUniversalDataReader(filename) as IVectorFeatureDataReader;
if (vdr == null)
{
//MsgBox.ShowInfo("输入的矢量文件\"" + filename + "\"格式错误,无法作为模板装入!");
return;
}
if (vdr.ShapeType != enumShapeType.Polygon)
{
//MsgBox.ShowInfo("不支持非多边形矢量文件作为模板装入!");
return;
}
try
{
_maskObj = vdr.Features[0];
//int fetCount = vdr.FeatureCount;
//if (fetCount == 1)
//{
// SetMaskTemplateMatrixFromFeature(filename, vdr.FetchFirstFeature());
//}
//else
//{
// using (frmFeatureSelector frm = new frmFeatureSelector(vdr.Features))
// {
// if (frm.ShowDialog() == DialogResult.OK)
// {
// Feature[] fets = frm.GetSelectedVectorFeatures();
// if (fets == null || fets.Length == 0)
// return;
// for (int i = 0; i < fets.Length; i++)
// {
// SetMaskTemplateMatrixFromFeature(filename, fets[i]);
// }
// }
// }
//}
}
finally
{
if (vdr != null)
{
vdr.Dispose();
}
}
}
public Feature[] GetFeatures()
{
string fname = FindVector();
if (fname == null)
{
return(null);
}
IVectorFeatureDataReader dr = VectorDataReaderFactory.GetUniversalDataReader(fname) as IVectorFeatureDataReader;
if (dr == null)
{
return(null);
}
try
{
Feature[] fets;
if (_where != null)
{
fets = dr.FetchFeatures((f) => { return(_where(f)); });
}
else
{
Feature f = dr.FetchFirstFeature();
if (f != null)
{
fets = new Feature[] { f }
}
;
else
{
return(null);
}
}
return(fets.Length == 0 ? null : fets.ToArray());
}
finally
{
dr.Dispose();
}
}
private object ReadFeatures(string filename)
{
if (string.IsNullOrEmpty(filename))
{
return(null);
}
IVectorFeatureDataReader dr = VectorDataReaderFactory.GetUniversalDataReader(filename) as IVectorFeatureDataReader;
if (dr == null)
{
return(null);
}
try
{
return(dr.Features);
}
finally
{
dr.Dispose();
}
}
protected override bool Execute(IContextMessage contextMessage)
{
IVectorFeatureDataReader vdr = null;
OdbcConnection conn = null;
OdbcCommand cmd = null;
try
{
if (!ResFieldIsOK(out vdr))
{
contextMessage.AddError("字段映射关系中源字段设置有错误。");
return(false);
}
if (!DesFieldIsOK(out conn, out cmd))
{
contextMessage.AddError("字段映射关系中目标字段设置有错误。");
return(false);
}
ImportFeatures(conn, cmd, vdr);
return(true);
}
finally
{
if (vdr != null)
{
vdr.Dispose();
}
if (cmd != null)
{
cmd.Dispose();
}
if (conn != null)
{
conn.Dispose();
}
}
}
public int[] ProcessVectorToArray(string shpFileName, string firlistfname)
{
//sw.WriteLine("NO.\t" + "Latitude\t" + "Longitude\t" + "Size/ha\t" + "Temperature/K\t" + "Fire_Intensity\t" + "Reliability");
Feature[] features = null;
IVectorFeatureDataReader dr = null;
if (Path.GetExtension(shpFileName).ToUpper() == ".SHP")
{
dr = VectorDataReaderFactory.GetUniversalDataReader(shpFileName) as IVectorFeatureDataReader;
if (dr == null)
{
return(null);
}
features = dr.Features;
}
else if (Path.GetExtension(shpFileName).ToUpper() == ".TXT")
{
string[] pointContext = File.ReadAllLines(shpFileName);
List <Feature> featureList = new List <Feature>();
Feature tempFeature = null;
if (pointContext != null && pointContext.Length != 0)
{
int length = pointContext.Length;
for (int i = 1; i < length; i++)
{
string[] tempSplit = pointContext[i].Split(new char[] { '\t' }, StringSplitOptions.RemoveEmptyEntries);
if (tempSplit == null || tempSplit.Length != 7)
{
continue;
}
tempFeature = new Feature(int.Parse(tempSplit[0]), new ShapePoint(double.Parse(tempSplit[2]), double.Parse(tempSplit[1])),
new string[] { "0", "1", "2", "Latitude", "Longitude", "Size", "Temperature", "Fire_Intensity", "Reliability" },
new string[] { "0", "1", "2", tempSplit[1], tempSplit[2], tempSplit[3], tempSplit[4], tempSplit[5], tempSplit[6] }, null);
featureList.Add(tempFeature);
}
}
features = featureList.Count == 0 ? null : featureList.ToArray();
}
if (features == null || features.Length < 1)
{
return(null);
}
using (StreamWriter sw = new StreamWriter(firlistfname, true, Encoding.Default))
{
List <int> index = new List <int>();
int position;
string[] fieldValues;
foreach (Feature fea in features)
{
fieldValues = fea.FieldValues;
_firePointsCount++;
if (fea.FieldValues != null)
{
//_firePointsCount++;
sw.WriteLine(_firePointsCount + "\t" + fieldValues[3].PadLeft(7) + "\t\t" + fieldValues[4].PadLeft(7) + "\t\t" + fieldValues[5].PadLeft(7) + "\t\t" + fieldValues[6] + "\t\t" + fieldValues[7] + "\t\t" + fieldValues[8]);
ShapePoint pt = fea.Geometry as ShapePoint;
int col = (int)Math.Ceiling((pt.X + 180) / _resolution) - 1;
int row = (int)Math.Ceiling((90 - pt.Y) / _resolution) - 1;
position = _datwidth * row + col;
index.Add(position);
}
else
{
sw.WriteLine(_firePointsCount);
}
}
return(index.ToArray());
}
if (dr != null)
{
dr.Dispose();
}
}