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Home/ Questions/Q 8725273
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Editorial Team
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Editorial Team
Asked: June 13, 20262026-06-13T08:00:25+00:00 2026-06-13T08:00:25+00:00

How to convert an Eigen::Matrix<double,Dynamic,Dynamic> to an Eigen::SparseMatrix<double> ? I’m looking for a better

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How to convert an Eigen::Matrix<double,Dynamic,Dynamic> to an Eigen::SparseMatrix<double> ?
I’m looking for a better way instead of iterate through the dense matrix

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  1. Editorial Team
    Editorial Team
    2026-06-13T08:00:26+00:00Added an answer on June 13, 2026 at 8:00 am

    you can use the sparseView() method for that:

    sparse = dense.sparseView();

    and even specify a tolerance:

    sparse = dense.sparseView(reference,epsilon);

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