create_eigen_matrix() [2/2]

template<typename T >

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

inlinestaticprivate

Infer data structure from ComputeData type.

Template Parameters

T	ComputeData type

Parameters

compute_data

Input data

Returns

Pair of (dimensions, modality)

Definition at line 802 of file OperationHelper.hpp.

    {
        if (columns.empty()) {
            return {};
        }
 
        int rows = columns[0].size();
        int cols = columns.size();
 
        for (const auto& col : columns) {
            if (col.size() != rows) {
                error<std::invalid_argument>(Journal::Component::Yantra, Journal::Context::Runtime, std::source_location::current(), "All columns 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>(columns[col][row]);
            }
        }
        return matrix;
    }

References columns, and rows.

Referenced by recreate_eigen_matrix(), and recreate_eigen_matrix().

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