st_to_ccs

st_to_ccs, a Python code which converts information describing a sparse matrix from sparse triplet (ST) format to Compressed Column Storage (CCS).

Licensing:

The computer code and data files made available on this web page are distributed under the MIT license

Languages:

st_to_ccs is available in a C version and a C++ version and a FORTRAN90 version and a MATLAB version and a Python version.

Related Data and Programs:

ccs, a dataset directory which contains examples of the Compressed Column Storage (CCS) sparse matrix file format;

ccs_io, a Python code which reads and writes sparse linear systems stored in the Compressed Column Storage (CCS) format.

ccs_to_st, a Python code which converts a sparse matrix from Compressed Column Storage (CCS) to sparse triplet (ST) format.

st, a data directory which contains examples of the Sparse Triplet (ST) format, a sparse matrix file format, storing just (I,J,A(I,J)), and using zero-based indexing.

st_io, a Python code which reads and writes sparse linear systems stored in the ST "sparse triplet" Sparse Matrix format.

wathen_matrix, a Python code which compares storage schemes (full, banded, sparse triplet) and solution strategies (Linpack full, Linpack banded, conjugate gradient (CG)) for linear systems involving the Wathen matrix, which can arise when solving a problem using the finite element method (FEM).

Source Code:

• st_to_ccs.py, calls all the tests.
• st_to_ccs.sh, runs all the tests.
• st_to_ccs.txt, the output file.

• tiny_st.txt, a tiny matrix, in ST form.
• west_st.txt, the West matrix, in ST form.
• west_acc.txt, the values of the West matrix, in CCS form.
• west_ccc.txt, the compressed columns of the West matrix, in CCS form.
• west_icc.txt, the row indices of the West matrix, in CCS form.