Stackedbar bar chart

lib/matplotex.ex

@@ -213,10 +213,6 @@ defmodule Matplotex do
     bar(pos, values, width, [])
   end
 
-  def bar(pos, values, width, opts) do
-    BarChart.create(%Figure{axes: %BarChart{}}, {pos, values, width}, opts)
-  end
-
   @doc """
   Adds an additional dataset to a bar plot in the given `%Figure{}`.
 
@@ -251,6 +247,13 @@ defmodule Matplotex do
   |> M.bar(0, values2, width, label: "Dataset2", color: "#D3D3D3")
   |> M.bar(width, values2, width, label: "Dataset3", color: "green")
   """
+
+  def bar(%Figure{} = figure, values, width, opts), do: bar(figure, width, values, width, opts)
+
+  def bar(pos, values, width, opts) do
+    BarChart.create(%Figure{axes: %BarChart{}}, {pos, values, width}, opts)
+  end
+
   def bar(%Figure{} = figure, pos, values, width, opts) do
     figure
     |> show_legend()
@@ -752,6 +755,10 @@ defmodule Matplotex do
     Figure.show_legend(figure)
   end
 
+  def hide_legend(figure) do
+    Figure.hide_legend(figure)
+  end
+
   def set_options(figure, opts) do
     PlotOptions.set_options_in_figure(figure, opts)
   end

lib/matplotex/colorscheme/blender.ex

@@ -1,19 +1,17 @@
 defmodule Matplotex.Colorscheme.Blender do
-@moduledoc false
-alias Matplotex.Colorscheme.Rgb
+  @moduledoc false
+  alias Matplotex.Colorscheme.Rgb
 
   @rgb_fields [:red, :green, :blue, :alpha]
 
   @type color :: %Rgb{
-    red: :float,
-    green: :float,
-    blue: :float,
-    alpha: :float
-  }
-
+          red: :float,
+          green: :float,
+          blue: :float,
+          alpha: :float
+        }
 
   def mix(color1, color2, weight \\ 0.5) do
-
     p = weight
     w = p * 2 - 1
     a = color1.alpha - color2.alpha
@@ -30,10 +28,10 @@ alias Matplotex.Colorscheme.Rgb
     alpha = get_alpha(color1) * p + get_alpha(color2) * (1 - p)
     rgb(r, g, b, alpha)
   end
+
   defdelegate rgb(red, green, blue), to: Rgb
   defdelegate rgb(red, green, blue, alpha), to: Rgb
 
-
   @doc """
     Gets the `:red` property of the color.
   """
@@ -87,6 +85,4 @@ alias Matplotex.Colorscheme.Rgb
   end
 
   defp cast_color_by_attribute(color, attribute) when attribute in @rgb_fields, do: color
-
-
 end

lib/matplotex/colorscheme/colormap.ex

@@ -1,29 +1,32 @@
 defmodule Matplotex.Colorscheme.Colormap do
-@moduledoc false
+  @moduledoc false
   defstruct [:color, :offset, opacity: 1]
+
   def viridis do
-    ["#fde725","#21918c","#3b528b","#440154"]
+    ["#fde725", "#21918c", "#3b528b", "#440154"]
   end
 
   def plasma do
-    ["#F7E425","#ED6925", "#9C179E", "#0C0786" ]
+    ["#F7E425", "#ED6925", "#9C179E", "#0C0786"]
   end
 
   def inferno do
-    ["#FCFFA4","#F56C3E","#B12A90","#000004"]
+    ["#FCFFA4", "#F56C3E", "#B12A90", "#000004"]
   end
 
   def magma do
-    ["#FCFDBF","#FB8861", "#B73779", "#000004"]
+    ["#FCFDBF", "#FB8861", "#B73779", "#000004"]
   end
 
   def fetch_cmap(cmap) when is_binary(cmap), do: cmap |> String.to_atom() |> fetch_cmap()
 
   def fetch_cmap(cmap) do
     apply(__MODULE__, cmap, []) |> make_colormap()
   end
+
   def make_colormap(colors) do
     size = length(colors)
+
     colors
     |> Enum.with_index()
     |> Enum.map(&colormap(&1, size))
@@ -35,6 +38,4 @@ defmodule Matplotex.Colorscheme.Colormap do
     offset = idx / size * 100
     %__MODULE__{color: color, offset: offset}
   end
-
-
 end

lib/matplotex/colorscheme/garner.ex

@@ -1,13 +1,14 @@
 defmodule Matplotex.Colorscheme.Garner do
-@moduledoc false
-alias Matplotex.Colorscheme.Rgb
-alias Matplotex.Colorscheme.Blender
-alias Matplotex.InputError
+  @moduledoc false
+  alias Matplotex.Colorscheme.Rgb
+  alias Matplotex.Colorscheme.Blender
+  alias Matplotex.InputError
 
-  defstruct [:range, :color_cue,  :cmap, :preceeding, :minor, :major, :final]
+  defstruct [:range, :color_cue, :cmap, :preceeding, :minor, :major, :final]
 
   def garn_color({min, max} = range, point, cmap) when max != min do
     cue = (point - min) / (max - min)
+
     cmap
     |> make_from_cmap()
     |> put_range(range, cue)
@@ -16,8 +17,8 @@ alias Matplotex.InputError
 
   defp make_from_cmap(cmap) do
     cmap
-    |>to_rgb()
-    |>place_edges()
+    |> to_rgb()
+    |> place_edges()
   end
 
   defp put_range(%__MODULE__{} = garner, range, cue) do
@@ -28,22 +29,29 @@ alias Matplotex.InputError
     Enum.map(color_map, &Rgb.from_cmap!(&1))
   end
 
-  defp place_edges([preceeding, minor, major,final]) do
-    %__MODULE__{preceeding: preceeding.color, minor: minor.color, major: major.color, final: final.color}
+  defp place_edges([preceeding, minor, major, final]) do
+    %__MODULE__{
+      preceeding: preceeding.color,
+      minor: minor.color,
+      major: major.color,
+      final: final.color
+    }
   end
+
   defp place_edges(_) do
     raise InputError, message: "Invalid colormap"
   end
 
-  defp point_color(%__MODULE__{color_cue: cue, preceeding: preceeding, minor: minor}) when cue < minor do
-   minor|> Blender.mix(preceeding, cue)|> Rgb.to_string()
+  defp point_color(%__MODULE__{color_cue: cue, preceeding: preceeding, minor: minor})
+       when cue < minor do
+    minor |> Blender.mix(preceeding, cue) |> Rgb.to_string()
   end
 
   defp point_color(%__MODULE__{color_cue: cue, minor: minor, major: major}) when cue < major do
-   major|> Blender.mix(minor, cue)|> Rgb.to_string()
+    major |> Blender.mix(minor, cue) |> Rgb.to_string()
   end
 
   defp point_color(%__MODULE__{color_cue: cue, major: major, final: final}) when cue >= major do
-    final|> Blender.mix(major)|> Rgb.to_string()
+    final |> Blender.mix(major) |> Rgb.to_string()
   end
- end
+end

lib/matplotex/colorscheme/rgb.ex

@@ -1,18 +1,25 @@
 defmodule Matplotex.Colorscheme.Rgb do
   @moduledoc false
-alias Matplotex.Colorscheme.Colormap
+  alias Matplotex.Colorscheme.Colormap
+
   defstruct [
-    red: 0.0, # 0-255
-    green: 0.0, # 0-255
-    blue: 0.0, # 0-255
-    alpha: 1.0  # 0-1
+    # 0-255
+    red: 0.0,
+    # 0-255
+    green: 0.0,
+    # 0-255
+    blue: 0.0,
+    # 0-1
+    alpha: 1.0
   ]
 
-  def rgb(red, green, blue, alpha\\1.0)
-  def rgb({red, :percent}, {green, :percent}, {blue, :percent}, alpha)  do
+  def rgb(red, green, blue, alpha \\ 1.0)
+
+  def rgb({red, :percent}, {green, :percent}, {blue, :percent}, alpha) do
     rgb(red * 255, green * 255, blue * 255, alpha)
   end
-  def rgb(red, green, blue, alpha)  do
+
+  def rgb(red, green, blue, alpha) do
     %__MODULE__{
       red: cast(red, :red),
       green: cast(green, :green),
@@ -21,65 +28,64 @@ alias Matplotex.Colorscheme.Colormap
     }
   end
 
-  def to_string(struct, type\\nil)
+  def to_string(struct, type \\ nil)
+
+  def to_string(struct, nil) do
+    type =
+      case struct.alpha do
+        1.0 -> :hex
+        _ -> :rgba
+      end
 
-  def to_string(struct, :nil) do
-    type = case struct.alpha do
-      1.0 -> :hex
-      _ -> :rgba
-    end
     to_string(struct, type)
   end
 
   def to_string(%__MODULE__{red: r, green: g, blue: b, alpha: alpha}, :rgba) do
     "rgba(#{round(r)}, #{round(g)}, #{round(b)}, #{alpha})"
   end
+
   def to_string(%__MODULE__{red: r, green: g, blue: b, alpha: 1.0}, :hex) do
     "#" <> to_hex(r) <> to_hex(g) <> to_hex(b)
   end
 
   def cast(value, field) when field in [:red, :green, :blue] do
-    value/1
+    (value / 1)
     |> min(255.0)
     |> max(0.0)
   end
+
   def cast(value, :alpha) do
-    value/1
+    (value / 1)
     |> min(1.0)
     |> max(0.0)
   end
 
-  defp to_hex(value) when is_float(value), do:
-    to_hex(round(value))
-  defp to_hex(value) when value < 16, do:
-    "0" <> Integer.to_string(value, 16)
-  defp to_hex(value) when is_integer(value), do:
-    Integer.to_string(value, 16)
-
-    def from_hex!(input) do
-      {:ok, color} = from_hex(input)
-      color
-    end
+  defp to_hex(value) when is_float(value), do: to_hex(round(value))
+  defp to_hex(value) when value < 16, do: "0" <> Integer.to_string(value, 16)
+  defp to_hex(value) when is_integer(value), do: Integer.to_string(value, 16)
 
-    def from_cmap!(%Colormap{color: color} = cmap) do
-     %Colormap{cmap | color: from_hex!(color) }
-    end
+  def from_hex!(input) do
+    {:ok, color} = from_hex(input)
+    color
+  end
 
-    def from_hex("#" <> <<r :: binary-size(2), g :: binary-size(2), b :: binary-size(2)>>) do
-      {:ok, rgb(parse_hex(r), parse_hex(g), parse_hex(b))}
-    end
-    def from_hex("#" <> <<r :: binary-size(1), g :: binary-size(1), b :: binary-size(1)>>) do
-      {:ok, rgb(parse_hex(r <> r), parse_hex(g <> g), parse_hex(b <> b))}
-    end
+  def from_cmap!(%Colormap{color: color} = cmap) do
+    %Colormap{cmap | color: from_hex!(color)}
+  end
 
-    defp parse_hex(s), do: String.to_integer(s, 16)
+  def from_hex("#" <> <<r::binary-size(2), g::binary-size(2), b::binary-size(2)>>) do
+    {:ok, rgb(parse_hex(r), parse_hex(g), parse_hex(b))}
+  end
 
+  def from_hex("#" <> <<r::binary-size(1), g::binary-size(1), b::binary-size(1)>>) do
+    {:ok, rgb(parse_hex(r <> r), parse_hex(g <> g), parse_hex(b <> b))}
+  end
 
+  defp parse_hex(s), do: String.to_integer(s, 16)
 end
 
-
 defimpl String.Chars, for: CssColors.RGB do
-def to_string(struct) do
- Matplotex.Colorscheme.Rgb.to_string(struct)
-end
+  def to_string(struct) do
+    Matplotex.Colorscheme.Rgb.to_string(struct)
+  end
 end

lib/matplotex/element.ex

@@ -17,7 +17,7 @@ defmodule Matplotex.Element do
 
       defimpl String.Chars, for: __MODULE__ do
         def to_string(%module{} = element) do
-        module.assemble(element)
+          module.assemble(element)
         end
       end
     end

lib/matplotex/element/cmap.ex

@@ -1,5 +1,5 @@
 defmodule Matplotex.Element.Cmap do
-@moduledoc false
+  @moduledoc false
   alias Matplotex.Element.Rect
   alias Matplotex.Element
   use Element

lib/matplotex/figure.ex

@@ -63,6 +63,9 @@ defmodule Matplotex.Figure do
   def show_legend(%__MODULE__{axes: %module{} = axes} = figure),
     do: %{figure | axes: module.show_legend(axes)}
 
+  def hide_legend(%__MODULE__{axes: %module{} = axes} = figure),
+    do: %{figure | axes: module.hide_legend(axes)}
+
   def set_figure_size(%__MODULE__{margin: margin, axes: axes} = figure, {fwidth, fheight} = fsize) do
     frame_size = {fwidth - fwidth * 2 * margin, fheight - fheight * 2 * margin}