GroupByVertexAttributeOther
(
Microsoft.Office.Interop.Excel.Workbook workbook,
String attributeColumnName
)
{
Debug.Assert(workbook != null);
Debug.Assert(!String.IsNullOrEmpty(attributeColumnName));
IGraph oGraph = ReadWorkbook(workbook);
// The key is a unique attribute value from the specified column, and
// the value is a list of the vertices that have that attribute value.
Dictionary <String, LinkedList <IVertex> > oGroupDictionary =
new Dictionary <String, LinkedList <IVertex> >();
foreach (IVertex oVertex in oGraph.Vertices)
{
Object oAttributeValue;
if (!oVertex.TryGetValue(attributeColumnName, typeof(String),
out oAttributeValue))
{
continue;
}
String sAttributeValue = (String)oAttributeValue;
LinkedList <IVertex> oVerticesInGroup;
if (!oGroupDictionary.TryGetValue(sAttributeValue,
out oVerticesInGroup))
{
oVerticesInGroup = new LinkedList <IVertex>();
oGroupDictionary.Add(sAttributeValue, oVerticesInGroup);
}
oVerticesInGroup.AddLast(oVertex);
}
// Convert the collection of groups to an array of GraphMetricColumn
// objects, then write the array to the workbook.
GraphMetricColumn [] aoGraphMetricColumns =
GroupsToGraphMetricColumnsConverter.Convert <LinkedList <IVertex> >
(oGroupDictionary.Values, (oGroup) => oGroup);
WriteGraphMetricsToWorkbook(workbook, aoGraphMetricColumns);
}
TryCalculateGraphMetrics
(
IGraph graph,
CalculateGraphMetricsContext calculateGraphMetricsContext,
out GraphMetricColumn [] graphMetricColumns
)
{
Debug.Assert(graph != null);
Debug.Assert(calculateGraphMetricsContext != null);
AssertValid();
graphMetricColumns = null;
// Partition the graph into clusters using the ClusterCalculator class
// in the Algorithms namespace, which knows nothing about Excel.
ICollection <Community> oCommunities;
Algorithms.ClusterCalculator oClusterCalculator =
new Algorithms.ClusterCalculator();
oClusterCalculator.Algorithm = m_eAlgorithm;
if (!oClusterCalculator.TryCalculateGraphMetrics(graph,
calculateGraphMetricsContext.BackgroundWorker,
out oCommunities))
{
// The user cancelled.
return(false);
}
// Convert the collection of communities to an array of
// GraphMetricColumn objects.
graphMetricColumns =
GroupsToGraphMetricColumnsConverter.Convert <Community>(
oCommunities,
(oCommunity) => oCommunity.Vertices
);
return(true);
}
TryCalculateGraphMetrics
(
IGraph graph,
CalculateGraphMetricsContext calculateGraphMetricsContext,
out GraphMetricColumn [] graphMetricColumns
)
{
Debug.Assert(graph != null);
Debug.Assert(calculateGraphMetricsContext != null);
AssertValid();
graphMetricColumns = null;
// Partition the graph into strongly connected components using the
// ConnectedComponentCalculator class in the Algorithms namespace,
// which knows nothing about Excel.
//
// Note that ConnectedComponentCalculator does its work synchronously.
Algorithms.ConnectedComponentCalculator oConnectedComponentCalculator =
new Algorithms.ConnectedComponentCalculator();
IList <LinkedList <IVertex> > oComponents =
oConnectedComponentCalculator.CalculateStronglyConnectedComponents(
graph, false);
// Convert the collection of components to an array of
// GraphMetricColumn objects.
graphMetricColumns =
GroupsToGraphMetricColumnsConverter.Convert <LinkedList <IVertex> >(
oComponents,
(oComponent) => oComponent
);
return(true);
}
GroupByVertexAttributeGeneric <T>
(
Microsoft.Office.Interop.Excel.Workbook oWorkbook,
String sAttributeColumnName,
IEnumerable <T> oMinimumValues,
T oMinimumValueForType,
StringToTypeConverter <T> oStringToTypeConverter,
TypeAdjuster <T> oTypeAdjuster
)
where T : IComparable <T>
{
Debug.Assert(oWorkbook != null);
Debug.Assert(!String.IsNullOrEmpty(sAttributeColumnName));
Debug.Assert(oMinimumValues != null);
IGraph oGraph = ReadWorkbook(oWorkbook);
List <T> oMinimumValueList = new List <T>(oMinimumValues);
// Add a group that will hold vertices whose values are less than the
// first minimum value in oMinimumValueList. That way, every vertex
// will end up in a group.
oMinimumValueList.Insert(0, oMinimumValueForType);
// For each group whose minimum value is stored in oMinimumValueList,
// there is one LinkedList of vertices in oGroupList.
Int32 iGroups = oMinimumValueList.Count;
LinkedList <IVertex> [] oGroupList = new LinkedList <IVertex> [iGroups];
for (Int32 i = 0; i < iGroups; i++)
{
oMinimumValueList[i] = oTypeAdjuster(oMinimumValueList[i]);
oGroupList[i] = new LinkedList <IVertex>();
}
foreach (IVertex oVertex in oGraph.Vertices)
{
Object oAttributeValue;
T tAttributeValue;
if (
!oVertex.TryGetValue(sAttributeColumnName, typeof(String),
out oAttributeValue)
||
!oStringToTypeConverter((String)oAttributeValue,
out tAttributeValue)
)
{
continue;
}
tAttributeValue = oTypeAdjuster(tAttributeValue);
// (This search technique is simple but slow. It should be
// replaced with a binary search.)
for (Int32 i = iGroups - 1; i >= 0; i--)
{
if (tAttributeValue.CompareTo(oMinimumValueList[i]) >= 0)
{
oGroupList[i].AddLast(oVertex);
break;
}
}
}
// Convert the list of groups to an array of GraphMetricColumn objects,
// then write the array to the workbook.
GraphMetricColumn [] aoGraphMetricColumns =
GroupsToGraphMetricColumnsConverter.Convert <LinkedList <IVertex> >
(oGroupList, (oGroup) => oGroup);
WriteGraphMetricsToWorkbook(oWorkbook, aoGraphMetricColumns);
}