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Fiw some warnings in dox examples

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(grafted from c25034710ede8eb7e177e8a7426817b6a29e5440
)
This commit is contained in:
Gael Guennebaud 2018-06-07 16:09:22 +02:00
parent 523e442a7b
commit 36a1cd87d9
3 changed files with 7 additions and 3 deletions
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2
doc/examples/Tutorial_simple_example_dynamic_size.cpp
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@ -10,7 +10,7 @@ int main()
MatrixXi m(size,size+1); // a (size)x(size+1)-matrix of int's MatrixXi m(size,size+1); // a (size)x(size+1)-matrix of int's
for (int j=0; j<m.cols(); ++j) // loop over columns for (int j=0; j<m.cols(); ++j) // loop over columns
for (int i=0; i<m.rows(); ++i) // loop over rows for (int i=0; i<m.rows(); ++i) // loop over rows
m(i,j) = i+j*m.rows(); // to access matrix coefficients, m(i,j) = i+j*size; // to access matrix coefficients,
// use operator()(int,int) // use operator()(int,int)
std::cout << m << "\n\n"; std::cout << m << "\n\n";
} }

6
doc/special_examples/Tutorial_sparse_example.cpp
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@ -1,5 +1,6 @@
#include <Eigen/Sparse> #include <Eigen/Sparse>
#include <vector> #include <vector>
#include <iostream>
typedef Eigen::SparseMatrix<double> SpMat; // declares a column-major sparse matrix type of double typedef Eigen::SparseMatrix<double> SpMat; // declares a column-major sparse matrix type of double
typedef Eigen::Triplet<double> T; typedef Eigen::Triplet<double> T;
@ -9,7 +10,10 @@ void saveAsBitmap(const Eigen::VectorXd& x, int n, const char* filename);
int main(int argc, char** argv) int main(int argc, char** argv)
{ {
assert(argc==2); if(argc!=2) {
std::cerr << "Error: expected one and only one argument.\n";
return -1;
}
int n = 300; // size of the image int n = 300; // size of the image
int m = n*n; // number of unknows (=number of pixels) int m = n*n; // number of unknows (=number of pixels)