diff --git a/include/gnss/processor/processor_gnss_fix.h b/include/gnss/processor/processor_gnss_fix.h
index a32fb08fd483ca166d2839dcf1f79f303408997c..6a2cba34e6e668fd98e41392dc68a19e64696772 100644
--- a/include/gnss/processor/processor_gnss_fix.h
+++ b/include/gnss/processor/processor_gnss_fix.h
@@ -38,10 +38,10 @@ struct ProcessorParamsGnssFix : public ProcessorParamsBase
 class ProcessorGnssFix : public ProcessorBase
 {
     protected:
-        SensorGnssPtr sensor_gnss_ptr_;
+        SensorGnssPtr sensor_gnss_;
         ProcessorParamsGnssFixPtr params_gnss_;
-        CaptureGnssFixPtr first_capture_ptr_, last_capture_ptr_;
-        FrameBasePtr last_gnss_fix_KF_;
+        CaptureGnssFixPtr first_capture_, incoming_capture_;
+        FrameBasePtr last_KF_;
 
     public:
         ProcessorGnssFix(ProcessorParamsGnssFixPtr _params, SensorGnssPtr _sensor_gnss_ptr);
diff --git a/include/gnss/processor/processor_gnss_single_diff.h b/include/gnss/processor/processor_gnss_single_diff.h
index 41a6ef8a21eec6bb1b8083c1c981b35d6eee8a9f..ebd286c8ef51d1ad6f1bcaed305ccdf48bb656b2 100644
--- a/include/gnss/processor/processor_gnss_single_diff.h
+++ b/include/gnss/processor/processor_gnss_single_diff.h
@@ -38,12 +38,13 @@ struct ProcessorParamsGnssSingleDiff : public ProcessorParamsBase
 class ProcessorGnssSingleDiff : public ProcessorBase
 {
     protected:
-        SensorGnssPtr sensor_gnss_ptr_;
+        SensorGnssPtr sensor_gnss_;
         ProcessorParamsGnssSingleDiffPtr params_gnss_;
-        CaptureGnssSingleDiffPtr last_capture_ptr_, incoming_capture_ptr_;
+        CaptureGnssSingleDiffPtr incoming_capture_;
+        FrameBasePtr last_KF_;
 
     public:
-        ProcessorGnssSingleDiff(ProcessorParamsGnssSingleDiffPtr _params_gnss, SensorGnssPtr _sensor_gnss_ptr);
+        ProcessorGnssSingleDiff(ProcessorParamsGnssSingleDiffPtr _params_gnss, SensorGnssPtr _sensor_gnss);
         virtual ~ProcessorGnssSingleDiff();
         virtual void configure(SensorBasePtr _sensor);
 
@@ -59,7 +60,7 @@ class ProcessorGnssSingleDiff : public ProcessorBase
          *
          * The ProcessorTracker only processes incoming captures (it is not called).
          */
-        virtual void processKeyFrame(FrameBasePtr _keyframe_ptr, const Scalar& _time_tolerance) override {};
+        virtual void processKeyFrame(FrameBasePtr _keyframe, const Scalar& _time_tolerance) override {};
 
         /** \brief trigger in capture
          *
@@ -71,16 +72,16 @@ class ProcessorGnssSingleDiff : public ProcessorBase
          *
          * The ProcessorTracker only processes incoming captures, then it returns false.
          */
-        virtual bool triggerInKeyFrame(FrameBasePtr _keyframe_ptr, const Scalar& _time_tolerance) override {return false;}
+        virtual bool triggerInKeyFrame(FrameBasePtr _keyframe, const Scalar& _time_tolerance) override {return false;}
 
         virtual bool voteForKeyFrame();
 
 
     private:
-        FactorBasePtr emplaceFactor(FeatureBasePtr& ftr_ptr);
+        FactorBasePtr emplaceFactor(FeatureBasePtr& ftr);
 
     public:
-        static ProcessorBasePtr create(const std::string& _unique_name, const ProcessorParamsBasePtr _params, const SensorBasePtr sensor_ptr);
+        static ProcessorBasePtr create(const std::string& _unique_name, const ProcessorParamsBasePtr _params, const SensorBasePtr sensor);
 
 };
 
diff --git a/src/processor/processor_gnss_fix.cpp b/src/processor/processor_gnss_fix.cpp
index 152937a70060236d52b285dd619af0b2cd37dc8c..fca7b52b38f67ff731fcd5a1a0e86af4e81bea04 100644
--- a/src/processor/processor_gnss_fix.cpp
+++ b/src/processor/processor_gnss_fix.cpp
@@ -7,11 +7,11 @@
 namespace wolf
 {
 
-ProcessorGnssFix::ProcessorGnssFix(ProcessorParamsGnssFixPtr _params_gnss, SensorGnssPtr _sensor_gnss_ptr) :
+ProcessorGnssFix::ProcessorGnssFix(ProcessorParamsGnssFixPtr _params_gnss, SensorGnssPtr _sensor_gnss) :
         ProcessorBase("GNSS FIX", _params_gnss),
-        sensor_gnss_ptr_(_sensor_gnss_ptr),
+        sensor_gnss_(_sensor_gnss),
         params_gnss_(_params_gnss),
-        first_capture_ptr_(nullptr)
+        first_capture_(nullptr)
 {
     //
 }
@@ -21,63 +21,63 @@ ProcessorGnssFix::~ProcessorGnssFix()
     //
 }
 
-void ProcessorGnssFix::processCapture(CaptureBasePtr _capture_ptr)
+void ProcessorGnssFix::processCapture(CaptureBasePtr _capture)
 {
     // TODO: keep captures in a buffer and deal with KFpacks
     //WOLF_DEBUG("ProcessorGnssFix::process()");
-    last_capture_ptr_ = std::static_pointer_cast<CaptureGnssFix>(_capture_ptr);
+    incoming_capture_ = std::static_pointer_cast<CaptureGnssFix>(_capture);
 
-    FrameBasePtr new_frame_ptr = nullptr;
+    FrameBasePtr new_frame = nullptr;
     FactorBasePtr new_fac = nullptr;
 
     // ALREADY CREATED KF
-    PackKeyFramePtr KF_pack = buffer_pack_kf_.selectPack( _capture_ptr, params_gnss_->time_tolerance);
-    if (KF_pack && KF_pack->key_frame != last_gnss_fix_KF_)
+    PackKeyFramePtr KF_pack = buffer_pack_kf_.selectPack( incoming_capture_, params_gnss_->time_tolerance);
+    if (KF_pack && KF_pack->key_frame != last_KF_)
     {
-        WOLF_DEBUG( "PR ", getName()," - capture ", _capture_ptr->id(), " appended to existing KF " , KF_pack->key_frame->id() , " TS: ", KF_pack->key_frame->getTimeStamp());
-        new_frame_ptr = KF_pack->key_frame;
+        WOLF_DEBUG( "PR ", getName()," - capture ", incoming_capture_->id(), " appended to existing KF " , KF_pack->key_frame->id() , " TS: ", KF_pack->key_frame->getTimeStamp());
+        new_frame = KF_pack->key_frame;
     }
     // MAKE KF
     else if (voteForKeyFrame() && permittedKeyFrame())
     {
-        new_frame_ptr = getProblem()->emplaceFrame(KEY, _capture_ptr->getTimeStamp());
-        getProblem()->keyFrameCallback(new_frame_ptr, shared_from_this(), params_gnss_->time_tolerance);
-        WOLF_DEBUG( "PR ", getName()," - capture ", _capture_ptr->id(), " appended to new KF " , new_frame_ptr->id() , " TS: ", new_frame_ptr->getTimeStamp());
+        new_frame = getProblem()->emplaceFrame(KEY, incoming_capture_->getTimeStamp());
+        getProblem()->keyFrameCallback(new_frame, shared_from_this(), params_gnss_->time_tolerance);
+        WOLF_DEBUG( "PR ", getName()," - capture ", incoming_capture_->id(), " appended to new KF " , new_frame->id() , " TS: ", new_frame->getTimeStamp());
     }
 
     // ESTABLISH FACTOR
-    if (new_frame_ptr)
+    if (new_frame)
     {
         // LINK CAPTURE
-        _capture_ptr->link(new_frame_ptr); // Add incoming Capture to the new Frame
+        incoming_capture_->link(new_frame); // Add incoming Capture to the new Frame
 
         // EMPLACE FEATURES
         WOLF_DEBUG( "PR ", getName()," - emplacing the feature...");
-        auto ftr_ptr = FeatureBase::emplace<FeatureGnssFix>(last_capture_ptr_, last_capture_ptr_->getData(),last_capture_ptr_->getDataCovariance());
+        auto ftr = FeatureBase::emplace<FeatureGnssFix>(incoming_capture_, incoming_capture_->getData(),incoming_capture_->getDataCovariance());
 
         // EMPLACE FACTOR
-        new_fac = emplaceFactor(ftr_ptr);
+        new_fac = emplaceFactor(ftr);
 
         // outlier rejection
-        if (sensor_gnss_ptr_->isEnuDefined() && sensor_gnss_ptr_->isEnuMapInitialized())
+        if (sensor_gnss_->isEnuDefined() && sensor_gnss_->isEnuMapInitialized())
             if (rejectOutlier(new_fac))
                 new_fac = nullptr;
 
         // store last KF
         if (new_fac)
-            last_gnss_fix_KF_= new_frame_ptr;
+            last_KF_= new_frame;
     }
 
     // SET ECEF_ENU IF:
     //      1 - not initialized
     //      2 - factor established
-    if (!sensor_gnss_ptr_->isEnuDefined() && new_fac != nullptr)
+    if (!sensor_gnss_->isEnuDefined() && new_fac != nullptr)
     {
         WOLF_DEBUG("setting ecef enu");
-        sensor_gnss_ptr_->setEcefEnu(last_capture_ptr_->getData());
+        sensor_gnss_->setEcefEnu(incoming_capture_->getData());
 
         // Store the first capture that established a factor
-        first_capture_ptr_ = last_capture_ptr_;
+        first_capture_ = incoming_capture_;
     }
 
     // INITIALIZE ENU_MAP IF 4 NECESSARY CONDITIONS:
@@ -85,55 +85,55 @@ void ProcessorGnssFix::processCapture(CaptureBasePtr _capture_ptr)
     //      2 - not initialized
     //      3 - current capture in key-frame with factor
     //      4 - two factors established (first and current) in frames separated enough ( > enu_map_init_dist_min)
-    if ( sensor_gnss_ptr_->isEnuDefined() &&
-        !sensor_gnss_ptr_->isEnuMapInitialized() &&
+    if ( sensor_gnss_->isEnuDefined() &&
+        !sensor_gnss_->isEnuMapInitialized() &&
          new_fac != nullptr &&
-         first_capture_ptr_ != nullptr && first_capture_ptr_->getFrame() != nullptr && last_capture_ptr_->getFrame() != nullptr &&
-         (first_capture_ptr_->getFrame()->getState()-last_capture_ptr_->getFrame()->getState()).norm() > params_gnss_->enu_map_init_dist_min)
+         first_capture_ != nullptr && first_capture_->getFrame() != nullptr && incoming_capture_->getFrame() != nullptr &&
+         (first_capture_->getFrame()->getState()-incoming_capture_->getFrame()->getState()).norm() > params_gnss_->enu_map_init_dist_min)
     {
         WOLF_DEBUG("initializing enu map");
-        sensor_gnss_ptr_->initializeEnuMap(first_capture_ptr_->getFrame()->getState(), first_capture_ptr_->getData(),
-                                           last_capture_ptr_->getFrame()->getState(), last_capture_ptr_->getData());
+        sensor_gnss_->initializeEnuMap(first_capture_->getFrame()->getState(),      first_capture_->getData(),
+                                       incoming_capture_->getFrame()->getState(),   incoming_capture_->getData());
     }
 }
 
-FactorBasePtr ProcessorGnssFix::emplaceFactor(FeatureBasePtr& ftr_ptr)
+FactorBasePtr ProcessorGnssFix::emplaceFactor(FeatureBasePtr& ftr)
 {
     // CREATE CONSTRAINT --------------------
     //WOLF_DEBUG("creating the factor...");
     // 2D
     if (getProblem()->getDim() == 2)
-        return FactorBase::emplace<FactorGnssFix2D>(ftr_ptr, ftr_ptr, sensor_gnss_ptr_, shared_from_this(), false, FAC_ACTIVE);
+        return FactorBase::emplace<FactorGnssFix2D>(ftr, ftr, sensor_gnss_, shared_from_this(), false, FAC_ACTIVE);
     // 3D
     else
-        return FactorBase::emplace<FactorGnssFix3D>(ftr_ptr, ftr_ptr, sensor_gnss_ptr_, shared_from_this(), false, FAC_ACTIVE);
+        return FactorBase::emplace<FactorGnssFix3D>(ftr, ftr, sensor_gnss_, shared_from_this(), false, FAC_ACTIVE);
 }
 
-bool ProcessorGnssFix::rejectOutlier(FactorBasePtr fac_ptr)
+bool ProcessorGnssFix::rejectOutlier(FactorBasePtr fac)
 {
     // Cast feature
-    auto gnss_ftr_ptr = std::static_pointer_cast<FeatureGnssFix>(fac_ptr->getFeature());
+    auto gnss_ftr = std::static_pointer_cast<FeatureGnssFix>(fac->getFeature());
     // copy states
-    Eigen::VectorXs x(gnss_ftr_ptr->getCapture()->getFrame()->getP()->getState());
-    Eigen::VectorXs o(gnss_ftr_ptr->getCapture()->getFrame()->getP()->getState());
-    Eigen::VectorXs x_antena(sensor_gnss_ptr_->getStateBlock(0)->getState());
-    Eigen::VectorXs t_ENU_map(sensor_gnss_ptr_->getEnuMapTranslation()->getState());
-    Eigen::VectorXs roll_ENU_map(sensor_gnss_ptr_->getEnuMapRoll()->getState());
-    Eigen::VectorXs pitch_ENU_map(sensor_gnss_ptr_->getEnuMapPitch()->getState());
-    Eigen::VectorXs yaw_ENU_map(sensor_gnss_ptr_->getEnuMapYaw()->getState());
+    Eigen::VectorXs x(gnss_ftr->getCapture()->getFrame()->getP()->getState());
+    Eigen::VectorXs o(gnss_ftr->getCapture()->getFrame()->getP()->getState());
+    Eigen::VectorXs x_antena(sensor_gnss_->getStateBlock(0)->getState());
+    Eigen::VectorXs t_ENU_map(sensor_gnss_->getEnuMapTranslation()->getState());
+    Eigen::VectorXs roll_ENU_map(sensor_gnss_->getEnuMapRoll()->getState());
+    Eigen::VectorXs pitch_ENU_map(sensor_gnss_->getEnuMapPitch()->getState());
+    Eigen::VectorXs yaw_ENU_map(sensor_gnss_->getEnuMapYaw()->getState());
     // create Scalar* array of a copy of the state
     Scalar* parameters[7] = {x.data(), o.data(), x_antena.data(), t_ENU_map.data(), roll_ENU_map.data(),
                              pitch_ENU_map.data(), yaw_ENU_map.data()};
     // create residuals pointer
     Eigen::VectorXs residuals(3);
     // evaluate the factor in this state
-    fac_ptr->evaluate(parameters, residuals.data(), nullptr);
+    fac->evaluate(parameters, residuals.data(), nullptr);
     // discard if residual too high evaluated at the current estimation
     if (residuals.norm() > 1e3)
     {
         WOLF_WARN("Discarding GNSS FIX Factor, considered OUTLIER");
-        WOLF_TRACE("Feature: ", fac_ptr->getMeasurement().transpose(),"\nError: ",(fac_ptr->getMeasurementSquareRootInformationUpper().inverse()*residuals).transpose());
-        fac_ptr->remove();
+        WOLF_TRACE("Feature: ", fac->getMeasurement().transpose(),"\nError: ",(fac->getMeasurementSquareRootInformationUpper().inverse()*residuals).transpose());
+        fac->remove();
         return true;
     }
     return false;
@@ -142,7 +142,7 @@ bool ProcessorGnssFix::rejectOutlier(FactorBasePtr fac_ptr)
 bool ProcessorGnssFix::voteForKeyFrame()
 {
     // Depending on time since the last KF with gnssfix capture
-    if (!last_gnss_fix_KF_ || (last_capture_ptr_->getTimeStamp() - last_gnss_fix_KF_->getTimeStamp()) > params_gnss_->time_th)
+    if (!last_KF_ || (incoming_capture_->getTimeStamp() - last_KF_->getTimeStamp()) > params_gnss_->time_th)
         return true;
 
     // TODO: more alternatives?
@@ -153,15 +153,15 @@ bool ProcessorGnssFix::voteForKeyFrame()
 
 void ProcessorGnssFix::configure(SensorBasePtr _sensor)
 {
-    sensor_gnss_ptr_ = std::static_pointer_cast<SensorGnss>(_sensor);
+    sensor_gnss_ = std::static_pointer_cast<SensorGnss>(_sensor);
 };
 
-ProcessorBasePtr ProcessorGnssFix::create(const std::string& _unique_name, const ProcessorParamsBasePtr _params, const SensorBasePtr sensor_ptr)
+ProcessorBasePtr ProcessorGnssFix::create(const std::string& _unique_name, const ProcessorParamsBasePtr _params, const SensorBasePtr sensor)
 {
-    auto prc_ptr = std::make_shared<ProcessorGnssFix>(std::static_pointer_cast<ProcessorParamsGnssFix>(_params),
-                                                      std::static_pointer_cast<SensorGnss>(sensor_ptr));
-    prc_ptr->setName(_unique_name);
-    return prc_ptr;
+    auto prc = std::make_shared<ProcessorGnssFix>(std::static_pointer_cast<ProcessorParamsGnssFix>(_params),
+                                                      std::static_pointer_cast<SensorGnss>(sensor));
+    prc->setName(_unique_name);
+    return prc;
 }
 
 
diff --git a/src/processor/processor_gnss_single_diff.cpp b/src/processor/processor_gnss_single_diff.cpp
index 18004cc67dc74936b3b57921754d35820c13d894..ff31924f1f1649949de6b6c740a929a950187f16 100644
--- a/src/processor/processor_gnss_single_diff.cpp
+++ b/src/processor/processor_gnss_single_diff.cpp
@@ -6,9 +6,9 @@
 namespace wolf
 {
 
-ProcessorGnssSingleDiff::ProcessorGnssSingleDiff(ProcessorParamsGnssSingleDiffPtr _params_gnss, SensorGnssPtr _sensor_gnss_ptr) :
+ProcessorGnssSingleDiff::ProcessorGnssSingleDiff(ProcessorParamsGnssSingleDiffPtr _params_gnss, SensorGnssPtr _sensor_gnss) :
         ProcessorBase("GNSS SINGLE DIFFERENCES", _params_gnss),
-        sensor_gnss_ptr_(_sensor_gnss_ptr),
+        sensor_gnss_(_sensor_gnss),
         params_gnss_(_params_gnss)
 {
     //
@@ -19,45 +19,48 @@ ProcessorGnssSingleDiff::~ProcessorGnssSingleDiff()
     //
 }
 
-void ProcessorGnssSingleDiff::processCapture(CaptureBasePtr _capture_ptr)
+void ProcessorGnssSingleDiff::processCapture(CaptureBasePtr _capture)
 {
     // TODO: keep captures in a buffer and deal with KFpacks
 
     //WOLF_DEBUG("ProcessorGnssSingleDiff::process()");
-    incoming_capture_ptr_ = std::static_pointer_cast<CaptureGnssSingleDiff>(_capture_ptr);
+    incoming_capture_ = std::static_pointer_cast<CaptureGnssSingleDiff>(_capture);
 
     // discard capture with null or non-key origin frame
-    if (incoming_capture_ptr_->getOriginFrame() == nullptr || !incoming_capture_ptr_->getOriginFrame()->isKey())
+    if (incoming_capture_->getOriginFrame() == nullptr || !incoming_capture_->getOriginFrame()->isKey())
         return;
 
-    FrameBasePtr new_frame_ptr = nullptr;
+    FrameBasePtr new_frame = nullptr;
 
     // ALREADY CREATED KF
-    PackKeyFramePtr KF_pack = buffer_pack_kf_.selectPack( _capture_ptr, params_->time_tolerance);
-    if (KF_pack && KF_pack->key_frame != incoming_capture_ptr_->getOriginFrame())
+    PackKeyFramePtr KF_pack = buffer_pack_kf_.selectPack( _capture, params_->time_tolerance);
+    if (KF_pack && KF_pack->key_frame != incoming_capture_->getOriginFrame())
     {
-        new_frame_ptr = KF_pack->key_frame;
-        WOLF_DEBUG( "PR ",getName()," - capture ", _capture_ptr->id(), " appended to existing KF " , KF_pack->key_frame->id() , " TS: ", KF_pack->key_frame->getTimeStamp());
+        new_frame = KF_pack->key_frame;
+        WOLF_DEBUG( "PR ",getName()," - capture ", _capture->id(), " appended to existing KF " , KF_pack->key_frame->id() , " TS: ", KF_pack->key_frame->getTimeStamp());
     }
     // MAKE KF
     else if (voteForKeyFrame() && permittedKeyFrame())
     {
-        new_frame_ptr = getProblem()->emplaceFrame(KEY, _capture_ptr->getTimeStamp());
-        getProblem()->keyFrameCallback(new_frame_ptr, shared_from_this(), params_->time_tolerance);
-        WOLF_DEBUG( "PR ",getName()," - capture ", _capture_ptr->id(), " appended to new KF " , new_frame_ptr->id() , " TS: ", new_frame_ptr->getTimeStamp());
+        new_frame = getProblem()->emplaceFrame(KEY, _capture->getTimeStamp());
+        getProblem()->keyFrameCallback(new_frame, shared_from_this(), params_->time_tolerance);
+        WOLF_DEBUG( "PR ",getName()," - capture ", _capture->id(), " appended to new KF " , new_frame->id() , " TS: ", new_frame->getTimeStamp());
     }
 
     // ESTABLISH FACTOR
-    if (new_frame_ptr)
+    if (new_frame)
     {
         // LINK CAPTURE
-        _capture_ptr->link(new_frame_ptr); // Add incoming Capture to the new Frame
+        _capture->link(new_frame); // Add incoming Capture to the new Frame
 
         // EMPLACE FEATURE
-        auto ftr_ptr = FeatureBase::emplace<FeatureGnssSingleDiff>(incoming_capture_ptr_, incoming_capture_ptr_->getData(),incoming_capture_ptr_->getDataCovariance());
+        auto ftr = FeatureBase::emplace<FeatureGnssSingleDiff>(incoming_capture_, incoming_capture_->getData(),incoming_capture_->getDataCovariance());
 
         // ADD CONSTRAINT
-        emplaceFactor(ftr_ptr);
+        emplaceFactor(ftr);
+
+        // store last KF
+        last_KF_ = new_frame;
     }
 
     // INITIALIZE ENU_MAP IF 4 NECESSARY CONDITIONS:
@@ -65,29 +68,26 @@ void ProcessorGnssSingleDiff::processCapture(CaptureBasePtr _capture_ptr)
     //      2 - not initialized
     //      3 - current capture in key-frame with factor
     //      4 - frames constained by the factor separated enough ( > enu_map_init_dist_min)
-    if ( sensor_gnss_ptr_->isEnuDefined() &&
-        !sensor_gnss_ptr_->isEnuMapInitialized() &&
-         new_frame_ptr != nullptr &&
-         incoming_capture_ptr_->getFrame() != nullptr && incoming_capture_ptr_->getFrame()->isKey() &&
-         incoming_capture_ptr_->getData().norm() > params_gnss_->enu_map_init_dist_min)
+    if ( sensor_gnss_->isEnuDefined() &&
+        !sensor_gnss_->isEnuMapInitialized() &&
+         new_frame != nullptr &&
+         incoming_capture_->getFrame() != nullptr && incoming_capture_->getFrame()->isKey() &&
+         incoming_capture_->getData().norm() > params_gnss_->enu_map_init_dist_min)
     {
         WOLF_DEBUG("initializing enu map");
-        sensor_gnss_ptr_->initializeEnuMapYaw(incoming_capture_ptr_->getOriginFrame()->getState(),
-                                              incoming_capture_ptr_->getFrame()->getState(),
-                                              incoming_capture_ptr_->getData());
+        sensor_gnss_->initializeEnuMapYaw(incoming_capture_->getOriginFrame()->getState(),
+                                          incoming_capture_->getFrame()->getState(),
+                                          incoming_capture_->getData());
     }
-
-    last_capture_ptr_ = incoming_capture_ptr_;
-    incoming_capture_ptr_ = nullptr;
 }
 
-FactorBasePtr ProcessorGnssSingleDiff::emplaceFactor(FeatureBasePtr& ftr_ptr)
+FactorBasePtr ProcessorGnssSingleDiff::emplaceFactor(FeatureBasePtr& ftr)
 {
     // CREATE CONSTRAINT --------------------
     //WOLF_DEBUG("creating the factor...");
     // 2D
     if (getProblem()->getDim() == 2)
-        return FactorBase::emplace<FactorGnssSingleDiff2D>(ftr_ptr, ftr_ptr, incoming_capture_ptr_->getOriginFrame(), sensor_gnss_ptr_, shared_from_this());
+        return FactorBase::emplace<FactorGnssSingleDiff2D>(ftr, ftr, incoming_capture_->getOriginFrame(), sensor_gnss_, shared_from_this());
     // 3D TODO
     else
         std::runtime_error("Single Differences in 3D not implemented yet.");
@@ -98,7 +98,7 @@ FactorBasePtr ProcessorGnssSingleDiff::emplaceFactor(FeatureBasePtr& ftr_ptr)
 bool ProcessorGnssSingleDiff::voteForKeyFrame()
 {
     // Depending on time since the last KF with gnssfix capture
-    if (last_capture_ptr_==nullptr || (last_capture_ptr_->getTimeStamp() - incoming_capture_ptr_->getTimeStamp()) > params_gnss_->time_th)
+    if (last_KF_==nullptr || (last_KF_->getTimeStamp() - incoming_capture_->getTimeStamp()) > params_gnss_->time_th)
         return true;
 
     // TODO: more alternatives?
@@ -109,14 +109,14 @@ bool ProcessorGnssSingleDiff::voteForKeyFrame()
 
 void ProcessorGnssSingleDiff::configure(SensorBasePtr _sensor)
 {
-    sensor_gnss_ptr_ = std::static_pointer_cast<SensorGnss>(_sensor);
+    sensor_gnss_ = std::static_pointer_cast<SensorGnss>(_sensor);
 };
 
-ProcessorBasePtr ProcessorGnssSingleDiff::create(const std::string& _unique_name, const ProcessorParamsBasePtr _params, const SensorBasePtr sensor_ptr)
+ProcessorBasePtr ProcessorGnssSingleDiff::create(const std::string& _unique_name, const ProcessorParamsBasePtr _params, const SensorBasePtr sensor)
 {
-    ProcessorGnssSingleDiffPtr prc_ptr = std::make_shared<ProcessorGnssSingleDiff>(std::static_pointer_cast<ProcessorParamsGnssSingleDiff>(_params), std::static_pointer_cast<SensorGnss>(sensor_ptr));
-    prc_ptr->setName(_unique_name);
-    return prc_ptr;
+    ProcessorGnssSingleDiffPtr prc = std::make_shared<ProcessorGnssSingleDiff>(std::static_pointer_cast<ProcessorParamsGnssSingleDiff>(_params), std::static_pointer_cast<SensorGnss>(sensor));
+    prc->setName(_unique_name);
+    return prc;
 }
 
 } // namespace wolf