|[eigen] Mapping a dynamic vector - howto|
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Hi, in several contexts (e.g. PDE) one has a (long) VectorXd X(N) where one knows that N = m*m . ( m, N unknown at compile time)Often one wishes to interpret this vector as an m x m matrix (for reading and writing).
How can this be achieved with Eigen? Many thanks for a hint, Helmut.
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