class_VectorBlock.cpp
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1 #include <Eigen/Core>
2 #include <iostream>
3 using namespace Eigen;
4 using namespace std;
5 
6 template<typename Derived>
9 {
10  return Eigen::VectorBlock<Derived>(v.derived(), start, end-start);
11 }
12 
13 template<typename Derived>
15 segmentFromRange(const MatrixBase<Derived>& v, int start, int end)
16 {
17  return Eigen::VectorBlock<const Derived>(v.derived(), start, end-start);
18 }
19 
20 int main(int, char**)
21 {
22  Matrix<int,1,6> v; v << 1,2,3,4,5,6;
23  cout << segmentFromRange(2*v, 2, 4) << endl; // calls the const version
24  segmentFromRange(v, 1, 3) *= 5; // calls the non-const version
25  cout << "Now the vector v is:" << endl << v << endl;
26  return 0;
27 }
ArrayXcf v
Definition: Cwise_arg.cpp:1
Namespace containing all symbols from the Eigen library.
Definition: jet.h:637
Definition: Half.h:150
Expression of a fixed-size or dynamic-size sub-vector.
Eigen::VectorBlock< Derived > segmentFromRange(MatrixBase< Derived > &v, int start, int end)
int main(int, char **)
The matrix class, also used for vectors and row-vectors.
Base class for all dense matrices, vectors, and expressions.
Definition: MatrixBase.h:48


gtsam
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autogenerated on Sat May 8 2021 02:41:47