public LWLCTool(DataTable dataTable, ToolParameterContainer toolParameterContainer, IFeatureClass featureClass)
{
_dataTable = dataTable;
_toolParameterContainer = toolParameterContainer;
_featureClass = featureClass;
_resultDataTable = new DataTable();
}
public WLCTool(DataTable dataTable, ToolParameterContainer toolParameterContainer)
{
_backupDataTable = dataTable.Copy();
_workingDataTable = _backupDataTable;
this._toolParameterContainer = toolParameterContainer;
_transformationStrategy = Model.NormalizationStrategy.MaximumScoreNormalizationStrategy;
}
public Cluster(int featureId, IList <int> clusterIDs, DataTable dt, ToolParameterContainer toolParameterContainer, NormalizationStrategy transformationStrategy)
{
_featureId = featureId;
_clusterIDs = clusterIDs;
_dataTable = dt;
_enumerableRowCollection = _dataTable.AsEnumerable();
_toolParameterContainer = toolParameterContainer;
_transformationStrategy = transformationStrategy;
//the feature id is also part of the cluster!
_clusterIDs.Add(featureId);
}
private IList <Tuple <IToolParameter, double> > GlobalRange(ToolParameterContainer toolParameterContainer)
{
IList <Tuple <IToolParameter, double> > listOfRangeTuple = new List <Tuple <IToolParameter, double> >();
foreach (var currentToolParameter in toolParameterContainer.ToolParameter)
{
IList <double> data = _enumerableRowCollection.Select(x => x.Field <double>(currentToolParameter.ColumnName)).ToList();
listOfRangeTuple.Add(Tuple.Create(currentToolParameter, data.Max() - data.Min()));
}
return(listOfRangeTuple);
}
private static IList <Tuple <IToolParameter, double?> > LocalWeights(ToolParameterContainer toolParameterContainer, IList <Tuple <IToolParameter, double> > localRangeList, IList <Tuple <IToolParameter, double> > globalRangeList)
{
IList <Tuple <IToolParameter, double?> > listOfLocalWeightTupel = new List <Tuple <IToolParameter, double?> >();
double?divisor = 0;
foreach (var currentToolParameter2 in toolParameterContainer.ToolParameter)
{
var localRange2 = localRangeList.First(x => x.Item1 == currentToolParameter2).Item2;
var globalRange2 = globalRangeList.First(x => x.Item1 == currentToolParameter2).Item2;
if (globalRange2 == 0)
{
divisor = null;
break;
}
divisor = divisor + ((currentToolParameter2.ScaledWeight * localRange2) / globalRange2);
}
if (divisor == 0)
{
divisor = null;
}
foreach (var currentToolParameter in toolParameterContainer.ToolParameter)
{
var localRange = localRangeList.FirstOrDefault(x => x.Item1 == currentToolParameter).Item2;
var globalRange = globalRangeList.FirstOrDefault(x => x.Item1 == currentToolParameter).Item2;
double?dividend;
if (globalRange == 0)
{
dividend = null;
}
else
{
dividend = (currentToolParameter.ScaledWeight * localRange) / globalRange;
}
if (dividend.HasValue && divisor.HasValue)
{
listOfLocalWeightTupel.Add(new Tuple <IToolParameter, double?>(currentToolParameter, dividend / divisor));
}
else
{
listOfLocalWeightTupel.Add(new Tuple <IToolParameter, double?>(currentToolParameter, null));
}
}
return(listOfLocalWeightTupel);
}
private IList <Tuple <IToolParameter, double> > LocalRange(ToolParameterContainer toolParameterContainer)
{
int oidColumnIndex = GetOIDColumnIndex();
IList <Tuple <IToolParameter, double> > listOfRangeTuple = new List <Tuple <IToolParameter, double> >();
var rows = _enumerableRowCollection.Where(x => _clusterIDs.Contains(x.Field <FieldTypeOID>(oidColumnIndex).OID));
foreach (var currentToolParameter in toolParameterContainer.ToolParameter)
{
IList <double> data = rows.Select(x => x.Field <double>(currentToolParameter.ColumnName)).ToList();
listOfRangeTuple.Add(Tuple.Create(currentToolParameter, data.Max() - data.Min()));
}
return(listOfRangeTuple);
}
private IList <Tuple <IToolParameter, double?> > Scale(ToolParameterContainer toolParameterContainer, IList <Tuple <IToolParameter, double> > localRangeList)
{
IList <Tuple <IToolParameter, double?> > listOfScaledTuple = new List <Tuple <IToolParameter, double?> >();
var oidColumnIndex = GetOIDColumnIndex();
var clusterIDsRows = _enumerableRowCollection.Where(x => _clusterIDs.Contains(x.Field <FieldTypeOID>(oidColumnIndex).OID));
var featureIDRow = _enumerableRowCollection.Where(x => x.Field <FieldTypeOID>(oidColumnIndex).OID == _featureId);
foreach (var currentToolParameter in toolParameterContainer.ToolParameter)
{
var currentLocalRange = localRangeList.FirstOrDefault(x => x.Item1 == currentToolParameter);
IList <double> data = clusterIDsRows.Select(x => x.Field <double>(currentToolParameter.ColumnName)).Distinct().ToList();
var actualValue = featureIDRow.Select(x => x.Field <double>(currentToolParameter.ColumnName)).FirstOrDefault();
var result = NormalizationStrategyFactory.GetStrategy(_transformationStrategy).Transform(data, actualValue, currentToolParameter.IsBenefitCriterion);
listOfScaledTuple.Add(Tuple.Create(currentToolParameter, result));
}
return(listOfScaledTuple);
}
