In SparseSuiteQR, all of the examples I can find use stdin or a file read to create a sparse matrix. Could someone provide a simple example of how to create one directly in C++?

Even better, in the CHOLMOD documentation, there is mention of a sparse2 function available in matlab, which behaves the same as the sparse. Can this be used in C++?

I am assuming that you try to solve a linear system, see the CSparse package from Tim Davies, or boost matrix libraries which also have numeric bindings which interface umfpack and some lapack functions AFAIK...

The data structures used by SuiteSparseQR (e.g. cholmod_sparse) are defined in the CHOLMOD library. You can find more information about it on the CHOLMOD documentation, which is much larger than the one from SuiteSparseQR.

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