private IFeatureSet SelectTransFeatures(IFeatureSet dataSet, string filterExpression, string spatialRegion)
{
try
{
IFeatureSet filterSet = null;
List <DotSpatial.Data.IFeature> filterList = null;
bool getSpatialRegion = false;
if (_spatialRigon != null && spatialRegion != "")
{
IDataManager dataManager = new DataManager();
filterSet = dataManager.OpenFile(_spatialRigon) as IFeatureSet;
if (filterSet.FeatureType == FeatureType.Polygon)
{
filterList = (filterSet as FeatureSet).SelectByAttribute("");
getSpatialRegion = true;
}
}
#region 空间和属性过滤
IFeatureSet corFeatureSet = CorrectFeatures(dataSet as FeatureSet);
List <DotSpatial.Data.IFeature> dataList = corFeatureSet.SelectByAttribute(filterExpression);
if (getSpatialRegion)
{
for (int i = 0; i < dataList.Count; i++)
{
bool isIntersection = false;
foreach (DotSpatial.Data.IFeature feature in filterList)
{
if (dataList[i].Geometry.Intersects(feature.Geometry))
{
isIntersection = true;
break;
}
}
if (!isIntersection)
{
dataList.RemoveAt(i);
i--;
}
}
}
#endregion
IFeatureSet resultSet = new FeatureSet(dataList);
resultSet.Projection = dataSet.Projection;
return(resultSet);
}
catch (Exception ex)
{
MessageBox.Show("分析失败！");
return(null);
}
}
/// <summary>
/// Executes the Erase Opaeration tool programaticaly.
/// Ping deleted static for external testing 01/2010
/// </summary>
/// <param name="input1">The input FeatureSet.</param>
/// <param name="input2">The input Expression string to select features to Delete.</param>
/// <param name="output">The output FeatureSet.</param>
/// <param name="cancelProgressHandler">The progress handler.</param>
/// <returns></returns>
public bool Execute(
IFeatureSet input1, string input2, IFeatureSet output, ICancelProgressHandler cancelProgressHandler)
{
// Validates the input and output data
if (input1 == null || input2 == null || output == null)
{
return(false);
}
if (cancelProgressHandler.Cancel)
{
return(false);
}
int previous = 0;
List <IFeature> fetList = input1.SelectByAttribute(input2);
int noOfFeaturesToDelete = fetList.Count;
int noOfFeatures = input1.Features.Count;
output.FeatureType = input1.FeatureType;
foreach (IFeature f in input1.Features)
{
output.Features.Add(f);
}
// Go through every item in the list
for (int i = 0; i < noOfFeaturesToDelete; i++)
{
int current = Convert.ToInt32(Math.Round(i * 100D / noOfFeaturesToDelete));
// only update when increment in percentage
if (current > previous)
{
cancelProgressHandler.Progress(string.Empty, current, current + TextStrings.progresscompleted);
}
previous = current;
// loop through every item in the list
for (int j = 0; j < noOfFeatures; j++)
{
// Select the Feature from Feature set to detlete
if (fetList[i] == input1.Features[j])
{
output.Features.Remove(input1.Features[j]);
}
}
}
output.SaveAs(output.Filename, true);
return(true);
}
private bool checkSql()
{
if (m_CurrentFeaSet == null)
{
return(false);
}
try
{
m_ResultFeatures = m_CurrentFeaSet.SelectByAttribute(this.txtWhereClause.Text);
return(true);
}
catch
{
return(false);
}
}
/// <summary>
/// Executes the Erase Opaeration tool programaticaly.
/// Ping deleted static for external testing 01/2010
/// </summary>
/// <param name="input1">The input FeatureSet.</param>
/// <param name="input2">The input Expression string to select features to Delete.</param>
/// <param name="output">The output FeatureSet.</param>
/// <param name="cancelProgressHandler">The progress handler.</param>
/// <returns></returns>
public bool Execute(
IFeatureSet input1, string input2, IFeatureSet output, ICancelProgressHandler cancelProgressHandler)
{
// Validates the input and output data
if (input1 == null || input2 == null || output == null)
{
return false;
}
if (cancelProgressHandler.Cancel)
{
return false;
}
int previous = 0;
List<IFeature> fetList = input1.SelectByAttribute(input2);
int noOfFeaturesToDelete = fetList.Count;
int noOfFeatures = input1.Features.Count;
output.FeatureType = input1.FeatureType;
foreach (IFeature f in input1.Features)
{
output.Features.Add(f);
}
// Go through every item in the list
for (int i = 0; i < noOfFeaturesToDelete; i++)
{
int current = Convert.ToInt32(Math.Round(i * 100D / noOfFeaturesToDelete));
// only update when increment in percentage
if (current > previous)
{
cancelProgressHandler.Progress(string.Empty, current, current + TextStrings.progresscompleted);
}
previous = current;
// loop through every item in the list
for (int j = 0; j < noOfFeatures; j++)
{
// Select the Feature from Feature set to detlete
if (fetList[i] == input1.Features[j])
{
output.Features.Remove(input1.Features[j]);
}
}
}
output.SaveAs(output.Filename, true);
return true;
}
