diff --git a/notebooks/intro/visualization.clj b/notebooks/intro/visualization.clj
index ce39ce1..ef34d7f 100644
--- a/notebooks/intro/visualization.clj
+++ b/notebooks/intro/visualization.clj
@@ -44,6 +44,33 @@
                      {:MSIZE 200})
     kind/pprint)
 
+;; We can used Hanami temples from the namespace `[aerial.hanami.templates :as ht]'
+;; as well as the additional templates at Noj's `[scicloj.noj.v1.vis.hanami.templates :as vht]`.
+
+(-> datasets/iris
+    (vis/hanami-plot vht/rule-chart
+                     {:X :sepal-width
+                      :Y :sepal-length
+                      :X2 :petal-width
+                      :Y2 :petal-length
+                      :OPACITY 0.2
+                      :SIZE 3
+                      :COLOR "species"}))
+
+;; ### Grouped datasets
+
+;; Grouped datasets are handled automatically with a table view.
+
+(-> datasets/iris
+    (tc/group-by [:species])
+    (vis/hanami-plot vht/rule-chart
+                     {:X :sepal-width
+                      :Y :sepal-length
+                      :X2 :petal-width
+                      :Y2 :petal-length
+                      :OPACITY 0.2
+                      :SIZE 3}))
+
 ;; ### Additional Hanami templates
 
 ;; The `scicloj.noj.v1.vis.hanami.templates` namespace add Hanami templates to Hanami's own collection.
diff --git a/src/scicloj/noj/v1/vis.clj b/src/scicloj/noj/v1/vis.clj
index dc0a549..6fae7fc 100644
--- a/src/scicloj/noj/v1/vis.clj
+++ b/src/scicloj/noj/v1/vis.clj
@@ -6,7 +6,8 @@
             [scicloj.kindly.v4.kind :as kind]
             [scicloj.noj.v1.paths :as paths]
             [scicloj.tempfiles.api :as tempfiles]
-            [scicloj.noj.v1.stats :as stats]))
+            [scicloj.noj.v1.stats :as stats]
+            [tablecloth.api :as tc]))
 
 (defn hanami-data [data]
   (when data
@@ -30,12 +31,19 @@
           :else                   {:DATA data})))
 
 (defn hanami-plot [data template options]
-  (-> data
-      hanami-data
-      (merge options)
-      (->> (apply concat)
-           (apply hc/xform template))
-      kind/vega-lite))
+  (if (tc/grouped? data)
+    (-> data
+        (tc/aggregate {:plot (fn [group-data]
+                               [(-> group-data
+                                    (hanami-plot template
+                                                 options))])})
+        kind/table)
+    (-> data
+        hanami-data
+        (merge options)
+        (->> (apply concat)
+             (apply hc/xform template))
+        kind/vega-lite)))
 
 (defn hanami-collector [template template-key]
   (fn [common-data