19 lines
523 B
C++
19 lines
523 B
C++
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#include <Eigen/Dense>
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#include <iostream>
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using namespace std;
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using namespace Eigen;
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int main()
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{
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Array22f m;
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m << 1,2,
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3,4;
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Array44f a = Array44f::Constant(0.6);
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cout << "Here is the array a:" << endl << a << endl << endl;
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a.block<2,2>(1,1) = m;
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cout << "Here is now a with m copied into its central 2x2 block:" << endl << a << endl << endl;
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a.block(0,0,2,3) = a.block(2,1,2,3);
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cout << "Here is now a with bottom-right 2x3 block copied into top-left 2x3 block:" << endl << a << endl << endl;
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}
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