How to solve rectangular sparse matrix using Alglib, linlsqrsolvesparse?

问题

I've created a sparse matrix

alglib.sparse.sparsematrix solvingInputA = new alglib.sparse.sparsematrix() ;
alglib.sparse.sparsecreate(kNew.Length, nanCount,fdaNonZero,solvingInputA, default);

then I put some data and tried to convert with this block of code

alglib.linlsqrstate linlsqrstate;
alglib.linlsqrcreate(solvingInputA.m, solvingInputA.n, out linlsqrstate);
alglib.xparams _params = default;
alglib.sparse.sparseconverttocrs(solvingInputA, default);

then solve

alglib.linlsqrsolvesparse(linlsqrstate, solvingInputA, solvingInputB, default);

but I can't solve because of error in solving line (after conversion to proper format, what I readed in docs):

Error CS1503 Argument 2: cannot convert from 'alglib.sparse.sparsematrix' to 'alglib.sparsematrix'

Before when I had aglib.sparsematrix instead of alglib.sparse.sparsematrix, I couldn't convert because it.

来源：https://stackoverflow.com/questions/60588389/how-to-solve-rectangular-sparse-matrix-using-alglib-linlsqrsolvesparse