本文整理汇总了C++中DM类的典型用法代码示例。如果您正苦于以下问题：C++ DM类的具体用法？C++ DM怎么用？C++ DM使用的例子？那么, 这里精选的类代码示例或许可以为您提供帮助。
在下文中一共展示了DM类的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: dumpDM
// simple {DM,IM} and {DV,IV} arrays
void dumpDM(const DM& A, const char* s) {
DMat M; M.load(A.num_rows(),A.num_cols(), A.data());
M.print(g_MSGFile, s, "lf", 4, 8, 51,0,50);
}示例2: main
int main(int argc, char** argv)
{
DM DualMesh;
if ((argc!=4) && (argc!=6))
{
cout<<endl;
cout<<" -------------------- Curvature Filter ------------------------- "<<endl;
cout<<" Please cite Yuanhao's PhD thesis and related papers. Thank you! "<<endl;
cout<<" --------------------------------------------------------------- \n\n";
cout<<"usage: main imageName filterType Iterations.\n For example: ./cf lena.bmp m 30\n";
cout<<" or "<<endl;
cout<<"usage: main imageName filterType MaxItNum lambda DataFitOrder.\n For example: ./cf lena.bmp m 30 1.2 1.5\n";
cout<<"************************************************\n";
cout<<"Possible Filter Type: t (Total Variation) \n";
cout<<" m (Mean Curvature) \n";
cout<<" g (Gaussian Curvature) \n";
cout<<" d (Difference Curvature) \n";
cout<<" b (Bernstein Filter) \n";
return -1;
}
DualMesh.read(argv[1]);
char * filterType = argv[2];
if (*filterType == 't') Type = 0;
if (*filterType == 'm') Type = 1;
if (*filterType == 'd') Type = 3;
if (*filterType == 'b') Type = 4;
ItNum = atoi(argv[3]);
if (argc==6)
{
lambda = atof(argv[4]);
DataFitOrder = atof(argv[5]);
}
DualMesh.split();
double mytime;
DualMesh.Filter(Type, mytime, ItNum);
cout<<"runtime is "<<mytime<<" milliseconds."<<endl;
DualMesh.merge();
DualMesh.write();
DualMesh.read(argv[1]);
DualMesh.FilterNoSplit(Type, mytime, ItNum);
cout<<"runtime (noSplit) is "<<mytime<<" milliseconds."<<endl;
DualMesh.write("CF_NoSplit_result.png");
if (argc==6)
{
//filter solver for the variational models
DualMesh.read(argv[1]);
DualMesh.Solver(Type, mytime, ItNum, lambda, DataFitOrder);
cout<<"runtime is "<<mytime<<" milliseconds."<<endl;
DualMesh.write("CF_Solver.png");
}
return 0;
}示例3: main
int main(int argc, char *argv[])
{
// A
int ncol = 5, nrow = 5;
vector<int> colind = {0, 3, 6, 8, 10, 12};
vector<int> row = {0, 1, 4, 1, 2, 4, 0, 2, 0, 3, 3, 4};
vector<double> nz = {19, 12, 12, 21, 12, 12, 21, 16, 21, 5, 21, 18};
DM A(Sparsity(nrow, ncol, colind, row), nz);
// Right hand side
DM b = DM::ones(ncol);
// Type of linear systems
enum SymType {UNSYM, SYM, PD};
// All Linear solvers to be tested
struct Test {
string solver;
SymType type;
};
vector<Test> tests;
tests.push_back({"csparse", UNSYM});
tests.push_back({"csparsecholesky", PD});
tests.push_back({"lapacklu", UNSYM});
tests.push_back({"lapackqr", UNSYM});
tests.push_back({"ma27", SYM});
tests.push_back({"symbolicqr", UNSYM});
// Test all combinations
for (auto s : {UNSYM, SYM, PD}) {
DM A_test;
switch (s) {
case UNSYM:
cout << "Unsymmetric linear system" << endl;
A_test = A;
break;
case SYM:
cout << "Symmetric linear system" << endl;
A_test = A + A.T();
break;
case PD:
cout << "Positive definite linear system" << endl;
A_test = mtimes(A.T(), A);
break;
}
for (auto t : tests) {
if (t.type > s) continue; // Cannot be solved
if (!Linsol::has_plugin(t.solver)) {
cout << t.solver << " not available" << endl;
continue;
}
// Create a solver instance
Linsol F("F", t.solver);
// Solve
F.reset(A_test.sparsity());
F.pivoting(A_test.ptr());
F.factorize(A_test.ptr());
DM x = densify(b);
F.solve(x.ptr(), x.size2());
// Print the solution
cout << "solution: " << x << " (" << t.solver << ")" << endl;
}
}
return 0;
}