diff --git a/Project.toml b/Project.toml
index 20248eb..de99baa 100644
--- a/Project.toml
+++ b/Project.toml
@@ -14,6 +14,7 @@ LinearAlgebra = "37e2e46d-f89d-539d-b4ee-838fcccc9c8e"
 Logging = "56ddb016-857b-54e1-b83d-db4d58db5568"
 MLJModelInterface = "e80e1ace-859a-464e-9ed9-23947d8ae3ea"
 MultiData = "8cc5100c-b3d1-4f82-90cb-0ea93d317aba"
+Printf = "de0858da-6303-5e67-8744-51eddeeeb8d7"
 ProgressMeter = "92933f4c-e287-5a05-a399-4b506db050ca"
 Query = "1a8c2f83-1ff3-5112-b086-8aa67b057ba1"
 Random = "9a3f8284-a2c9-5f02-9a11-845980a1fd5c"
diff --git a/src/scalar/main.jl b/src/scalar/main.jl
index bb14308..3bec88a 100644
--- a/src/scalar/main.jl
+++ b/src/scalar/main.jl
@@ -17,6 +17,8 @@ include("random.jl")
 
 include("representatives.jl")
 
+include("visualizations.jl")
+
 # # Types for representing common associations between features and operators
 # include("canonical-conditions.jl") # TODO remove
 
diff --git a/src/scalar/var-features.jl b/src/scalar/var-features.jl
index 3a65e57..6ee15ca 100644
--- a/src/scalar/var-features.jl
+++ b/src/scalar/var-features.jl
@@ -2,7 +2,7 @@ import SoleData: AbstractFeature
 
 using MultiData: instance_channel
 
-import Base: show
+import Base: show, isless
 import SoleLogics: syntaxstring
 
 # Feature parentheses (e.g., for parsing/showing "main[V2]")
@@ -301,6 +301,8 @@ struct VariableValue{I<:VariableId, N<:Union{VariableName, Nothing}} <: Abstract
 end
 featurename(f::VariableValue) = !isnothing(f.i_name) ? f.i_name : ""
 
+Base.isless(a::VariableValue, b::VariableValue) = isless(a.i_variable, b.i_variable)
+
 function syntaxstring(f::VariableValue; variable_names_map = nothing, show_colon = false, kwargs...)
     if !isnothing(f.i_name)
         opening_parenthesis = UVF_OPENING_PARENTHESIS
diff --git a/src/scalar/visualizations.jl b/src/scalar/visualizations.jl
new file mode 100644
index 0000000..5d5bdf4
--- /dev/null
+++ b/src/scalar/visualizations.jl
@@ -0,0 +1,150 @@
+export show_scalardnf
+
+using Printf: @sprintf
+using SoleData: AbstractScalarCondition
+
+function extract_ranges(conjunction::LeftmostConjunctiveForm)
+    by_var = Dict{Any, Tuple{Float64,Bool,Float64,Bool}}()
+    for atom in SoleLogics.conjuncts(conjunction)
+        @assert atom isa Atom
+        cond = SoleLogics.value(atom)
+        @assert cond isa AbstractScalarCondition typeof(cond)
+        feat = SoleData.feature(cond)
+        minv = isnothing(SoleData.minval(cond)) ? -Inf : SoleData.minval(cond)
+        maxv = isnothing(SoleData.maxval(cond)) ? Inf : SoleData.maxval(cond)
+        mini = SoleData.minincluded(cond)
+        maxi = SoleData.maxincluded(cond)
+        if haskey(by_var, feat)
+            # Intersezione: aggiorna i bordi
+            (curmin, curmini, curmax, curmaxi) = by_var[feat]
+            # aggiorna min
+            if minv > curmin
+                curmin = minv
+                curmini = mini
+            elseif minv == curmin
+                curmini = curmini && mini
+            end
+            # aggiorna max
+            if maxv < curmax
+                curmax = maxv
+                curmaxi = maxi
+            elseif maxv == curmax
+                curmaxi = curmaxi && maxi
+            end
+            by_var[feat] = (curmin, curmini, curmax, curmaxi)
+        else
+            by_var[feat] = (minv, mini, maxv, maxi)
+        end
+    end
+    return by_var
+end
+
+
+function collect_thresholds(all_ranges)
+    thresholds = Set{Float64}()
+    for ranges in all_ranges
+        for (_, (minv, _mini, maxv, _maxi)) in pairs(ranges)
+            push!(thresholds, minv)
+            push!(thresholds, maxv)
+        end
+    end
+    return sort(collect(thresholds))
+end
+
+function draw_bar(minv, mini, maxv, maxi, thresholds; colwidth=5, body_char = "-")
+  nseg = length(thresholds) - 1
+  segments = fill(" " ^ colwidth, nseg)
+
+  for i = 1:nseg
+      t0 = thresholds[i]
+      t1 = thresholds[i+1]
+      if maxv <= t0 || minv >= t1
+          continue
+      else
+          segments[i] = body_char ^ colwidth
+      end
+  end
+
+  first_idx = findfirst(s -> occursin(body_char, s), segments)
+  last_idx  = findlast(s -> occursin(body_char, s), segments)
+
+  if first_idx !== nothing
+      segments[first_idx] = let x = collect(segments[first_idx])
+          x[1] = (mini ? '[' : '(')
+          String(x)
+      end
+  end
+  if last_idx !== nothing
+      segments[last_idx] = let x = collect(segments[last_idx])
+          x[colwidth] = (maxi ? ']' : ')')
+          String(x)
+      end
+  end
+
+  return  " " ^ colwidth * join(segments)
+end
+
+
+show_scalardnf(f::DNF; kwargs...) = show_scalardnf(stdout, f; kwargs...)
+
+function show_scalardnf(
+  io::IO,
+  formula::DNF;
+  show_unbounded=true,
+  colwidth=5,
+  body_char='=', # alternatives: ■, ━
+  print_disjuncts=false,
+  palette=[:cyan, :green, :yellow, :magenta, :blue]
+)
+  @assert colwidth >= 5
+  formula = normalize(formula)
+  disjs = SoleLogics.disjuncts(formula)
+  all_ranges = [extract_ranges(d) for d in disjs]
+
+  # raccogli tutte le variabili
+  all_vars = Set{Any}()
+  for ranges in all_ranges, v in keys(ranges)
+      push!(all_vars, v)
+  end
+  all_vars = sort(collect(all_vars))
+  thresholds = collect_thresholds(all_ranges)
+
+  # calcola larghezza massima nome variabile
+  namewidth = maximum(length(syntaxstring(v)) for v in all_vars)
+
+  # header
+  header = " " ^ (3+colwidth+namewidth)
+  for t in thresholds
+      header *= @sprintf("%-*.*f", colwidth, 2, t)
+  end
+  println(io, header)
+  println(io)
+
+  # mappa variabili -> colori
+  colors=Dict(),
+  var_colors = Dict{Any,Symbol}()
+  for (i, v) in enumerate(all_vars)
+      var_colors[v] = get(colors, v, palette[(i-1) % length(palette) + 1])
+  end
+
+  for (i, (d, ranges)) in enumerate(zip(disjs, all_ranges))
+      print_disjuncts && println(io, "Disjunct $i: ", syntaxstring(normalize(d)))
+      for v in all_vars
+          if haskey(ranges, v)
+              (minv, mini, maxv, maxi) = ranges[v]
+          elseif show_unbounded
+              minv, mini, maxv, maxi = (-Inf, true, +Inf, true)
+          else
+              continue
+          end
+          bar = draw_bar(minv, mini, maxv, maxi, thresholds; colwidth, body_char)
+          # colore
+          color = var_colors[v]
+          # stampo nome e barre
+          print(io, "  ")
+          printstyled(io, rpad(syntaxstring(v), namewidth), " : ", bar, color=color)
+          println(io)
+      end
+      println(io)
+  end
+end
diff --git a/test/runtests.jl b/test/runtests.jl
index 5bc00aa..69aa412 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -39,6 +39,7 @@ test_suites = [
     ("Conditions", [ "range-scalar-condition.jl", ]),
     ("Alphabets", [ "scalar-alphabet.jl", "discretization.jl"]),
     ("Features", [ "patchedfeatures.jl"]),
+    ("Visualizations", [ "visualizations.jl", ]),
     # 
     ("MLJ", [ "MLJ.jl", ]),
     ("PLA", [ "pla.jl", ]),
diff --git a/test/visualizations.jl b/test/visualizations.jl
new file mode 100644
index 0000000..7e32dcc
--- /dev/null
+++ b/test/visualizations.jl
@@ -0,0 +1,41 @@
+using SoleData
+
+@testset "Visualizations" begin
+  f = @scalarformula(
+    ((V1 < 5.85) ∧ (V1 ≥ 5.65) ∧ (V2 < 2.85) ∧ (V3 < 4.55) ∧ (V3 ≥ 4.45) ∧ (V4 < 0.35)) ∨
+    ((V1 < 5.3) ∧ (V2 ≥ 2.85) ∧ (V3 < 5.05) ∧ (V3 ≥ 4.85) ∧ (V4 < 0.35))
+  ) |> dnf
+
+  io = IOBuffer()
+  show_scalardnf(
+    io,
+    f;
+    show_unbounded=true,
+    colwidth=6,
+  )
+
+  out = String(take!(io))
+
+  check_same(a, b) = myclean(a) == myclean(b)
+  function myclean(a)
+    lines = collect(filter(x->x != "", split(out, '\n')))
+    join(map(x -> rstrip(x), lines), "\n")
+  end
+
+  @test check_same(out, """
+           -Inf  0.35  2.85  4.45  4.55  4.85  5.05  5.30  5.65  5.85  Inf
+
+    V1 :                                                       [====)
+    V2 :       [==========)
+    V3 :                         [====)
+    V4 :       [====)
+
+    V1 :       [========================================)
+    V2 :                   [==============================================]
+    V3 :                                     [====)
+    V4 :       [====)
+
+
+  """)
+
+end
\ No newline at end of file