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improvements in tutorial page 4 : block operations

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This commit is contained in:
Benoit Jacob
2010-10-18 08:44:27 -04:00
parent 4b0fb968ea
commit 1c15a6d96f
4 changed files with 52 additions and 57 deletions
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18
doc/examples/Tutorial_BlockOperations_block_assignment.cpp
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@@ -6,13 +6,13 @@ using namespace Eigen;
int main()
{
Array33f m;
m << 1,2,3,
4,5,6,
7,8,9;
Array<float,5,5> n = Array<float,5,5>::Constant(0.6);
n.block(1,1,3,3) = m;
cout << "n = " << endl << n << endl << endl;
Array33f res = n.block(0,0,3,3) * m;
cout << "res =" << endl << res << endl;
Array22f m;
m << 1,2,
3,4;
Array44f a = Array44f::Constant(0.6);
cout << "Here is the array a:" << endl << a << endl << endl;
a.block<2,2>(1,1) = m;
cout << "Here is now a with m copied into its central 2x2 block:" << endl << a << endl << endl;
a.block(0,0,2,3) = a.block(2,1,2,3);
cout << "Here is now a with bottom-right 2x3 block copied into top-left 2x2 block:" << endl << a << endl << endl;
}