6 files changed, 15 insertions, 9 deletions
diff --git a/GudhUI/utils/Critical_points.h b/GudhUI/utils/Critical_points.h
index 3021a5fe..2a18e079 100644
--- a/GudhUI/utils/Critical_points.h
+++ b/GudhUI/utils/Critical_points.h
@@ -106,6 +106,7 @@ template<typename SkBlComplex> class Critical_points {
       return 0;
 
     Edge_contractor<Complex> contractor(link, link.num_vertices() - 1);
+    (void)contractor;
 
     if (link.num_connected_components() > 1)
       // one than more CC -> not contractible
diff --git a/GudhUI/utils/Edge_contractor.h b/GudhUI/utils/Edge_contractor.h
index 45079a40..8a29ff4b 100644
--- a/GudhUI/utils/Edge_contractor.h
+++ b/GudhUI/utils/Edge_contractor.h
@@ -65,7 +65,7 @@ template<typename SkBlComplex> class Edge_contractor {
 
     Placement_type operator()(const EdgeProfile& profile) const override {
       std::vector<double> mid_coords(profile.p0().dimension(), 0);
-      for (size_t i = 0; i < profile.p0().dimension(); ++i) {
+      for (int i = 0; i < profile.p0().dimension(); ++i) {
         mid_coords[i] = (profile.p0()[i] + profile.p1()[i]) / 2.;
       }
       return Point(profile.p0().dimension(), mid_coords.begin(), mid_coords.end());
diff --git a/GudhUI/utils/Furthest_point_epsilon_net.h b/GudhUI/utils/Furthest_point_epsilon_net.h
index f2a216f6..98346daa 100644
--- a/GudhUI/utils/Furthest_point_epsilon_net.h
+++ b/GudhUI/utils/Furthest_point_epsilon_net.h
@@ -73,7 +73,7 @@ template<typename SkBlComplex> class Furthest_point_epsilon_net {
       complex_(complex) {
     if (!complex.empty()) {
       init_filtration();
-      for (int k = 2; k < net_filtration_.size(); ++k) {
+      for (std::size_t k = 2; k < net_filtration_.size(); ++k) {
         update_radius_value(k);
       }
     }
diff --git a/GudhUI/utils/Is_manifold.h b/GudhUI/utils/Is_manifold.h
index 0640ea47..d0974463 100644
--- a/GudhUI/utils/Is_manifold.h
+++ b/GudhUI/utils/Is_manifold.h
@@ -77,6 +77,7 @@ template<typename SkBlComplex> class Is_manifold {
   bool is_k_sphere(Vertex_handle v, int k) {
     auto link = input_complex_.link(v);
     Edge_contractor<Complex> contractor(link, link.num_vertices() - 1);
+    (void)contractor;
     return (is_sphere_simplex(link) == k);
   }
 
diff --git a/GudhUI/utils/Persistence_compute.h b/GudhUI/utils/Persistence_compute.h
index 97165490..2dc03c8e 100644
--- a/GudhUI/utils/Persistence_compute.h
+++ b/GudhUI/utils/Persistence_compute.h
@@ -29,6 +29,7 @@
 #include <gudhi/Simplex_tree.h>
 #include <gudhi/distance_functions.h>
 #include <gudhi/Persistent_cohomology.h>
+#include <gudhi/Rips_complex.h>
 
 #include <vector>
 
@@ -69,21 +70,23 @@ template<typename SkBlComplex> class Persistence_compute {
       points.emplace_back(std::move(pt_to_add));
     }
 
+    using Simplex_tree = Gudhi::Simplex_tree<>;
+    using Filtration_value = Simplex_tree::Filtration_value;
+    using Rips_complex = Gudhi::rips_complex::Rips_complex<Filtration_value>;
+    using Field_Zp = Gudhi::persistent_cohomology::Field_Zp;
+    using Persistent_cohomology = Gudhi::persistent_cohomology::Persistent_cohomology<Simplex_tree, Field_Zp>;
 
-    Graph_t prox_graph = compute_proximity_graph(points, params.threshold, euclidean_distance<Point_t>);
-    Gudhi::Simplex_tree<> st;
-    st.insert_graph(prox_graph);
-    st.expansion(params.max_dim);
+    Rips_complex rips_complex(points, params.threshold, Euclidean_distance());
 
-    Gudhi::persistent_cohomology::Persistent_cohomology< Gudhi::Simplex_tree<>,
-        Gudhi::persistent_cohomology::Field_Zp > pcoh(st);
+    Simplex_tree st;
+    rips_complex.create_complex(st, params.max_dim);
+    Persistent_cohomology pcoh(st);
     // initializes the coefficient field for homology
     pcoh.init_coefficients(params.p);
     // put params.min_pers
     pcoh.compute_persistent_cohomology(params.min_pers);
     stream << "persistence: \n";
     stream << "p dimension birth death: \n";
-
     pcoh.output_diagram(stream);
   }
 };
diff --git a/GudhUI/utils/Vertex_collapsor.h b/GudhUI/utils/Vertex_collapsor.h
index 2b36cb3a..568dab2f 100644
--- a/GudhUI/utils/Vertex_collapsor.h
+++ b/GudhUI/utils/Vertex_collapsor.h
@@ -81,6 +81,7 @@ template<typename SkBlComplex> class Vertex_collapsor {
     if (link.is_cone()) return true;
     if (link.num_connected_components() > 1) return false;
     Edge_contractor<Complex> contractor(link, link.num_vertices() - 1);
+    (void)contractor;
     return (link.num_vertices() == 1);
   }
 };