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Appending a matrix in Eigen

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marvisiyer
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Appending a matrix in Eigen

Mon Apr 01, 2013 6:19 pm
Is there an easy way (other than writing a loop) to append two matrices (either rowwise or columnwise) in Eigen?
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ggael
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Re: Appending a matrix in Eigen  Topic is solved

Mon Apr 01, 2013 9:44 pm
You can use the comma initializer, e.g.:

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// rowwise
res.resize(A.rows(), A.cols()+B.cols());
res << A, B;

//column-wise
res.resize(A.rows()+B.rows(), A.cols());
res << A,
       B;

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