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1 | #include <Eigen/Dense>
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2 | #include <iostream>
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3 |
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4 | using namespace std;
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5 | using namespace Eigen;
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6 |
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7 | int main()
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8 | {
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9 | Array22f m;
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10 | m << 1,2,
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11 | 3,4;
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12 | Array44f a = Array44f::Constant(0.6);
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13 | cout << "Here is the array a:" << endl << a << endl << endl;
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14 | a.block<2,2>(1,1) = m;
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15 | cout << "Here is now a with m copied into its central 2x2 block:" << endl << a << endl << endl;
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16 | a.block(0,0,2,3) = a.block(2,1,2,3);
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17 | cout << "Here is now a with bottom-right 2x3 block copied into top-left 2x2 block:" << endl << a << endl << endl;
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18 | }
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