public SymmetricSparseRowMatrix(SymmetricCoordinationalMatrix matrix)
{
if (matrix == null)
{
throw new ArgumentNullException(nameof(matrix));
}
var elems = matrix.OrderBy(key => key.row).ThenBy(key => key.col);
ia = new int[matrix.Size + 1];
List <int> list_ja = new List <int>();
List <double> list_a = new List <double>();
foreach (var item in elems)
{
if (item.row >= item.col)
{
ia[item.row + 1]++;
list_ja.Add(item.col);
list_a.Add(item.value);
}
}
for (int i = 1; i < Size; i++)
{
ia[i + 1] += ia[i];
}
ja = new int[ia[Size]];
a = new double[ja.Length];
ja = list_ja.ToArray();
a = list_a.ToArray();
}
public SymmetricSkylineMatrix(SymmetricCoordinationalMatrix coordinationalMatrix)
{
if (coordinationalMatrix == null)
{
throw new ArgumentNullException(nameof(coordinationalMatrix));
}
var orderedItems = coordinationalMatrix.OrderBy(x => x.row).ThenBy(x => x.col);
var size = coordinationalMatrix.Size;
ia = new int[size + 1];
di = new double[size];
var itemsProfile = new Dictionary <(int i, int j), double>();
int flag = 1, jj = 0;
foreach (var item in orderedItems)
{
if (item.row == item.col)
{
di[item.row] = item.value;
}
else
{
(int i, int j) = (item.row, item.col);
itemsProfile[(i, j)] = item.value;
public SymmetricSkylineMatrix(SymmetricCoordinationalMatrix coordinationalMatrix)
{
if (coordinationalMatrix == null)
{
throw new ArgumentNullException(nameof(coordinationalMatrix));
}
var size = coordinationalMatrix.Size;
var pattern = new SortedSet <int> [size];
var pattern2 = new Dictionary <(int i, int j), int>();
for (int i = 0; i < size; i++)
{
pattern[i] = new SortedSet <int>();
}
foreach (var item in coordinationalMatrix)
{
(int i, int j) = item.row > item.col ? (item.row, item.col) : (item.col, item.row);
if (i != j)
{
pattern[i].Add(j);
}
}
// добавление в шаблон нулей
for (int i = 1; i < size; i++)
{
if (pattern[i].Count != 0)
{
int j = pattern[i].First();
pattern2[(i, j)] = 1;
public SymmetricDenseMatrix(SymmetricCoordinationalMatrix coordinationalMatrix)
{
if (coordinationalMatrix == null)
{
throw new ArgumentNullException(nameof(coordinationalMatrix));
}
AllocateMemory(coordinationalMatrix.Size);
foreach (var item in coordinationalMatrix)
{
if (item.row >= item.col)
{
matrix[item.row][item.col] = item.value;
}
}
}
public SymmetricSparseRowColumnMatrix(SymmetricCoordinationalMatrix coordinationalMatrix)
{
if (coordinationalMatrix == null)
{
throw new ArgumentNullException(nameof(coordinationalMatrix));
}
var orderedItems = coordinationalMatrix
.Where(x => x.row >= x.col)
.OrderBy(x => x.row)
.ThenBy(x => x.col);
var size = coordinationalMatrix.Size;
var count = orderedItems.Count() - size;
ia = new int[size + 1];
ja = new int[count];
di = new double[size];
aa = new double[count];
int k = 0;
foreach (var item in orderedItems)
{
if (item.row != item.col)
{
ja[k] = item.col;
aa[k] = item.value;
ia[item.row + 1]++;
k++;
}
else
{
di[item.row] = item.value;
}
}
for (int i = 0; i < size; i++)
{
ia[i + 1] += ia[i];
}
}