diff --git a/include/guik/viewer/async_light_viewer.hpp b/include/guik/viewer/async_light_viewer.hpp
index 421ab303..c4ab641a 100644
--- a/include/guik/viewer/async_light_viewer.hpp
+++ b/include/guik/viewer/async_light_viewer.hpp
@@ -32,6 +32,7 @@ class AsyncLightViewer : public AsyncLightViewerContext {
 
   void invoke(const std::function<void()>& func);
   void invoke_after_rendering(const std::function<void()>& func);
+  void invoke_once(const std::string& label, const std::function<void()>& func);
 
   void clear_images();
   void remove_image(const std::string& name);
@@ -41,7 +42,8 @@ class AsyncLightViewer : public AsyncLightViewerContext {
   void clear_plots(bool clear_settings = true);
   void remove_plot(const std::string& plot_name, const std::string& label = "");
   void setup_plot(const std::string& plot_name, int width, int height, int plot_flags = 0, int x_flags = 0, int y_flags = 0, int order = -1);
-  void link_plot_axes(const std::string& plot_name, int link_id, int axis);
+  void link_plot_axis(const std::string& plot_name, int link_id, int axis);
+  void link_plot_axes(const std::string& plot_name, int link_id, int axes = -1);
   void setup_legend(const std::string& plot_name, int loc, int flags = 0);
   void fit_plot(const std::string& plot_name);
   void fit_all_plots();
diff --git a/include/guik/viewer/light_viewer.hpp b/include/guik/viewer/light_viewer.hpp
index daa9418c..36914478 100644
--- a/include/guik/viewer/light_viewer.hpp
+++ b/include/guik/viewer/light_viewer.hpp
@@ -33,8 +33,12 @@ class LightViewer : public guik::Application, public guik::LightViewerContext {
   bool toggle_spin_once();
   virtual void register_ui_callback(const std::string& name, const std::function<void()>& callback = 0) override;
 
+  // Invoke a task in the visualization thread
   void invoke(const std::function<void()>& func);
+  // Invoke a task after rendering in the visualization thread
   void invoke_after_rendering(const std::function<void()>& func);
+  // Invoke a labeled task only once
+  void invoke_once(const std::string& label, const std::function<void()>& func);
 
   virtual void clear() override;
   virtual void clear_text() override;
@@ -55,7 +59,8 @@ class LightViewer : public guik::Application, public guik::LightViewerContext {
   void clear_plots(bool clear_settings = true);
   void remove_plot(const std::string& plot_name, const std::string& label = "");
   void setup_plot(const std::string& plot_name, int width, int height, int plot_flags = 0, int x_flags = 0, int y_flags = 0, int order = -1);
-  void link_plot_axes(const std::string& plot_name, int link_id, int axis);
+  void link_plot_axis(const std::string& plot_name, int link_id, int axis);       // axis = ImAxis_X1 or ImAxis_X2, ...
+  void link_plot_axes(const std::string& plot_name, int link_id, int axes = -1);  // axes = (1 << ImAxis_X1) | (1 << ImAxis_X2) ...
   void setup_legend(const std::string& plot_name, int loc, int flags = 0);
   void fit_plot(const std::string& plot_name);
   void fit_all_plots();
@@ -286,6 +291,7 @@ class LightViewer : public guik::Application, public guik::LightViewerContext {
 
   std::mutex invoke_requests_mutex;
   std::deque<std::function<void()>> invoke_requests;
+  std::unordered_set<std::string> invoke_once_called;
 
   std::mutex post_render_invoke_requests_mutex;
   std::deque<std::function<void()>> post_render_invoke_requests;
diff --git a/include/guik/viewer/plot_setting.hpp b/include/guik/viewer/plot_setting.hpp
index 2510825d..bd84c584 100644
--- a/include/guik/viewer/plot_setting.hpp
+++ b/include/guik/viewer/plot_setting.hpp
@@ -40,7 +40,7 @@ struct PlotSetting {
   int order;
 
   int axis_link_id;  // -1 for invalid
-  int linked_axes;   // 1 << ImAxes_X1 | 1 << ImAxes_X2 | ...
+  int linked_axes;   // 1 << ImAxis_X1 | 1 << ImAxis_X2 | ...
 
   bool set_axes_to_fit;
 };
diff --git a/src/guik/viewer/async_light_viewer.cpp b/src/guik/viewer/async_light_viewer.cpp
index 02dcf7f1..b0df3111 100644
--- a/src/guik/viewer/async_light_viewer.cpp
+++ b/src/guik/viewer/async_light_viewer.cpp
@@ -109,6 +109,10 @@ void AsyncLightViewer::invoke_after_rendering(const std::function<void()>& func)
   guik::viewer()->invoke_after_rendering(func);
 }
 
+void AsyncLightViewer::invoke_once(const std::string& label, const std::function<void()>& func) {
+  guik::viewer()->invoke_once(label, func);
+}
+
 void AsyncLightViewer::clear_images() {
   guik::viewer()->invoke([] { guik::viewer()->clear_images(); });
 }
@@ -136,8 +140,12 @@ void AsyncLightViewer::setup_plot(const std::string& plot_name, int width, int h
   guik::viewer()->invoke([=] { guik::viewer()->setup_plot(plot_name, width, height, plot_flags, x_flags, y_flags, order); });
 }
 
-void AsyncLightViewer::link_plot_axes(const std::string& plot_name, int link_id, int axis) {
-  guik::viewer()->invoke([=] { guik::viewer()->link_plot_axes(plot_name, link_id, axis); });
+void AsyncLightViewer::link_plot_axis(const std::string& plot_name, int link_id, int axis) {
+  guik::viewer()->invoke([=] { guik::viewer()->link_plot_axis(plot_name, link_id, axis); });
+}
+
+void AsyncLightViewer::link_plot_axes(const std::string& plot_name, int link_id, int axes) {
+  guik::viewer()->invoke([=] { guik::viewer()->link_plot_axes(plot_name, link_id, axes); });
 }
 
 void AsyncLightViewer::setup_legend(const std::string& plot_name, int loc, int flags) {
diff --git a/src/guik/viewer/light_viewer.cpp b/src/guik/viewer/light_viewer.cpp
index 846ed07c..00cd8753 100644
--- a/src/guik/viewer/light_viewer.cpp
+++ b/src/guik/viewer/light_viewer.cpp
@@ -439,7 +439,7 @@ void LightViewer::setup_plot(const std::string& plot_name, int width, int height
   setting.order = order >= 0 ? order : 8192 + plot_settings.size();
 }
 
-void LightViewer::link_plot_axes(const std::string& plot_name, int link_id, int axis) {
+void LightViewer::link_plot_axis(const std::string& plot_name, int link_id, int axis) {
   auto& setting = plot_settings[plot_name];
   setting.axis_link_id = link_id;
   setting.linked_axes |= (1 << axis);
@@ -449,6 +449,16 @@ void LightViewer::link_plot_axes(const std::string& plot_name, int link_id, int
   }
 }
 
+void LightViewer::link_plot_axes(const std::string& plot_name, int link_id, int axes) {
+  auto& setting = plot_settings[plot_name];
+  setting.axis_link_id = link_id;
+  setting.linked_axes = axes;
+
+  if (plot_linked_axis_limits.count(link_id) == 0) {
+    plot_linked_axis_limits[link_id] = Eigen::Matrix<double, 6, 2>::Zero();
+  }
+}
+
 void LightViewer::setup_legend(const std::string& plot_name, int loc, int flags) {
   auto& setting = plot_settings[plot_name];
   setting.legend_loc = loc;
@@ -694,6 +704,14 @@ void LightViewer::invoke_after_rendering(const std::function<void()>& func) {
   post_render_invoke_requests.push_back(func);
 }
 
+void LightViewer::invoke_once(const std::string& label, const std::function<void()>& func) {
+  std::lock_guard<std::mutex> lock(invoke_requests_mutex);
+  if (invoke_once_called.count(label) == 0) {
+    invoke_requests.push_back(func);
+    invoke_once_called.insert(label);
+  }
+}
+
 std::shared_ptr<LightViewerContext> LightViewer::sub_viewer(const std::string& context_name, const Eigen::Vector2i& canvas_size) {
   using namespace glk::console;