removed template Kernel2D

git-svn-id: svn+ssh://scm.gforge.inria.fr/svnroot/gudhi/branches/kernels@3965 636b058d-ea47-450e-bf9e-a15bfbe3eedb

Former-commit-id: 0cfdece6eb19cb8601371bc96e1dbb66ae41a086

1 files changed, 8 insertions, 2 deletions

diff --git a/src/Persistence_representations/test/kernels.cpp b/src/Persistence_representations/test/kernels.cpp
index c95e8086..b8d02d4c 100644
--- a/src/Persistence_representations/test/kernels.cpp
+++ b/src/Persistence_representations/test/kernels.cpp
@@ -40,10 +40,16 @@ using SW = Gudhi::Persistence_representations::Sliced_Wasserstein;
 using PWG = Gudhi::Persistence_representations::Persistence_heat_maps<constant_scaling_function>;
 using Persistence_diagram = std::vector<std::pair<double,double> >;
 
+std::function<double(std::pair<double, double>, std::pair<double, double>)> Gaussian_function(double sigma){
+  return [=](std::pair<double, double> p, std::pair<double, double> q){
+    return (1/std::sqrt(2*Gudhi::Persistence_representations::pi)*sigma) * std::exp(  -( (p.first-q.first)*(p.first-q.first) + (p.second-q.second)*(p.second-q.second) )/(2*sigma)  );
+  };
+}
+
 BOOST_AUTO_TEST_CASE(check_PWG) {
   Persistence_diagram v1, v2; v1.emplace_back(0,1); v2.emplace_back(0,2);
-  PWG pwg1(v1, Gudhi::Persistence_representations::Gaussian_kernel(1.0));
-  PWG pwg2(v2, Gudhi::Persistence_representations::Gaussian_kernel(1.0));
+  PWG pwg1(v1, Gaussian_function(1.0));
+  PWG pwg2(v2, Gaussian_function(1.0));
   BOOST_CHECK(std::abs(pwg1.compute_scalar_product(pwg2) - std::exp(-0.5)/(std::sqrt(2*Gudhi::Persistence_representations::pi))) <= 1e-3);
 }