TSparseMtx object
All listed functions support: real and complex numbers (where appropriate). Most functions are overloaded, to minimize the number of parameters required.
The class is derived from TMtxVec.
For comprehensive help file please see the online documentation of MtxVec for Delphi/C++ Builder or MtxVec for Visual Studio .NET
Introduced Methods
| Function | Description |
|---|---|
| Add | Sums two sparse matrices (A+B). |
| AddSplit | Construct sparse matrxix by summing lower, upper triangluar part and the diagonal. |
| Adjung | Adjungate operation. |
| Assign | |
| BandedToSparse | Converts banded matrix to modified compressed column sparse matrix format. |
| ConjMul | Conjugate Sparse2 and matrix multiply it with Sparse1. |
| DenseToSparse | Convert dense matrix to sparse matrix format. |
| Diag | Sets the kk-th diagonal of TSparseMtx from the Vec object. |
| DiagonalsCount | Calculates the number of diagonals above and below main diagonal. |
| DivideElem | Divide individual elements of sparse matrices. |
| Equal | Compares two sparse matrices. |
| FreeNumeric | Frees the numeric object used by the Umfpack. |
| Inv | The inverse matrix. |
| IsEqualSize | Compares matrix size. |
| LoadFromMatrixMarketFile | Loads the matrix stored in a matrix market file format. |
| LowerTriangle | Extract lower part of the Mtx. |
| Max | Maximum of all non-zero elements. |
| Maxc | Maximum of all non-zero complex elements. |
| Mean | Average of all non-zero elements. |
| Meanc | Average of all non-zero complex elements. |
| Min | Minimum of all non-zero elements. |
| Minc | Minimum of all non-zero complex elements. |
| Mul | Multiply two sparse matrices (matrix multiplication). |
| MulLeft | Multiply the sparse matrix from left. |
| MulRight | Multiply the sparse matrix from right. |
| PixelDownSample | Reduces dense matrix for screen display (bitmap) to show the non-zero pattern. |
| RandomSparse | Creates quadratic non-complex non-singular sparse matrix. |
| ResidualNorm | The residual norm of the solution of the system of linear equations A*X=B. |
| Resize | Resizes the sparse matrix to a new number of non-zeros. |
| RMS | Root mean squared of all non-zero elements. |
| SaveToMatrixMarketFile | Saves the matrix in matrix market file format. |
| Size | Define the size of sparse matrix. |
| Solve | Direct solve. |
| SolveIterative | Solve the system A*X = B by using one of the iterative methods. |
| SparseToBanded | Convert sparse matrix to banded matrix. |
| SparseToDense | Convert sparse matrix to banded matrix. |
| SparseToTriplets | Convert sparse matrix to triplets. |
| Split | Split sparse matrix into lower triangle, main diagonal and upper triangle. |
| StringsToValues | Convert strings to specific matrix format. |
| StructurizeSymmetric | Required by Pardiso solver to solve for general matrices. |
| Sub | Subract two sparse matrices. |
| Transp | Transpose sparse matrix. |
| TripletsToSparse | Convert triplets to sparse format. |
| TripletsToSparseAndFlush | Construct a sparse matrix by specifying the position of each element in dense matrix. |
| UpperTriangle | Extract upper part of the Mtx. |
| ValuesToStrings | Convert matrix values to strings. |
| ZeroThresh | Reduces the number of non-zeros. |