create_eigen_matrix() [1/2]

template<typename T >

static Eigen::MatrixXd MayaFlux::Yantra::OperationHelper::create_eigen_matrix ( const std::vector< std::span< const T > > &  spans )

inlinestaticprivate

Create Eigen matrix from spans.

Definition at line 647 of file OperationHelper.hpp.

    {
        if (spans.empty()) {
            return {};
        }
 
        int rows = spans[0].size();
        int cols = spans.size();
 
        for (const auto& span : spans) {
            if (span.size() != rows) {
                error<std::invalid_argument>(Journal::Component::Yantra, Journal::Context::Runtime, std::source_location::current(), "All spans must have same size");
            }
        }
 
        Eigen::MatrixXd matrix(rows, cols);
        for (int col = 0; col < cols; ++col) {
            for (int row = 0; row < rows; ++row) {
                matrix(row, col) = static_cast<double>(spans[col][row]);
            }
        }
        return matrix;
    }