1 files changed, 15 insertions, 0 deletions
diff --git a/src/Persistent_cohomology/include/gudhi/Persistent_cohomology.h b/src/Persistent_cohomology/include/gudhi/Persistent_cohomology.h
index b31df6a4..d3a8acc0 100644
--- a/src/Persistent_cohomology/include/gudhi/Persistent_cohomology.h
+++ b/src/Persistent_cohomology/include/gudhi/Persistent_cohomology.h
@@ -690,6 +690,21 @@ class Persistent_cohomology {
     return persistent_pairs_;
   }
 
+  /** @brief Returns persistence pairs for a given dimension.
+   * @param[in] dimension Dimension to get the birth and death pairs from.
+   * @return A vector of persistence intervals (birth and death) on a fixed dimension.
+   */
+  std::vector< std::pair< Filtration_value , Filtration_value > >
+  pairs_in_dimension( unsigned dimension ) {
+    std::vector< std::pair< Filtration_value , Filtration_value > > result;
+    for (auto pair : persistent_pairs_) {
+      if (cpx_->dimension( get<0>(pair)) == dimension ) {
+        result.push_back(std::pair<Filtration_value, Filtration_value>(cpx_->filtration(get<0>(pair)),
+                                                                       cpx_->filtration(get<1>(pair))));
+      }
+    }
+    return result;
+  }
  private:
   /*
    * Structure representing a cocycle.