Hexdocs

lib/matplotex/element/polygon.ex

@@ -15,7 +15,6 @@ defmodule Matplotex.Element.Polygon do
     )
   end
 
-
   defp assemble_point(%{points: point}) do
     for {x, y} <- point do
       "#{to_pixel(x)},#{to_pixel(y)} "

lib/matplotex/figure/areal/histogram.ex

@@ -24,17 +24,20 @@ defmodule Matplotex.Figure.Areal.Histogram do
 
   @impl Areal
   def create(
-        %Figure{axes: %__MODULE__{} = axes, rc_params: rc_params} = figure,
+        %Figure{axes: %__MODULE__{dataset: datasets} = axes, rc_params: rc_params} = figure,
         {data, bins},
         opts
       ) do
     {x, y} = bins_and_hists(data, bins)
 
     dataset = Dataset.cast(%Dataset{x: x, y: y}, opts)
+    datasets = datasets ++ [dataset]
+
+    xydata = flatten_for_data(datasets)
 
     %Figure{
       figure
-      | axes: %__MODULE__{axes | data: {x, y}, dataset: [dataset]},
+      | axes: %__MODULE__{axes | data: xydata, dataset: datasets},
         rc_params: %RcParams{rc_params | y_padding: @make_it_zero}
     }
     |> PlotOptions.set_options_in_figure(opts)

lib/matplotex/figure/areal/spline.ex

@@ -8,7 +8,6 @@ defmodule Matplotex.Figure.Areal.Spline do
   alias Matplotex.Figure.TwoD
   alias Matplotex.Figure
 
-
   use Areal
 
   frame(
@@ -21,6 +20,7 @@ defmodule Matplotex.Figure.Areal.Spline do
     region_legend: %Region{},
     region_content: %Region{}
   )
+
   @impl Areal
   def create(
         %Figure{axes: %__MODULE__{dataset: data} = axes} = figure,
@@ -40,29 +40,34 @@ defmodule Matplotex.Figure.Areal.Spline do
 
   @impl Areal
   def materialize(figure) do
-   figure
-   |>__MODULE__.materialized_by_region()
-   |> materialize_spline()
-
+    figure
+    |> __MODULE__.materialized_by_region()
+    |> materialize_spline()
   end
-  defp materialize_spline(%Figure{axes:
-  %{
-    dataset: data,
-    limit: %{x: xlim, y: ylim},
-    region_content: %Region{
-      x: x_region_content,
-      y: y_region_content,
-      width: width_region_content,
-      height: height_region_content
-    },
-    element: elements
-  } = axes,
-   rc_params: %RcParams{x_padding: x_padding, y_padding: y_padding}} = figure) do
+
+  defp materialize_spline(
+         %Figure{
+           axes:
+             %{
+               dataset: data,
+               limit: %{x: xlim, y: ylim},
+               region_content: %Region{
+                 x: x_region_content,
+                 y: y_region_content,
+                 width: width_region_content,
+                 height: height_region_content
+               },
+               element: elements
+             } = axes,
+           rc_params: %RcParams{x_padding: x_padding, y_padding: y_padding}
+         } = figure
+       ) do
     x_padding_value = width_region_content * x_padding
     y_padding_value = height_region_content * y_padding
     shrinked_width_region_content = width_region_content - x_padding_value * 2
     shrinked_height_region_content = height_region_content - y_padding_value * 2
     transition = {x_region_content + x_padding_value, y_region_content + y_padding_value}
+
     line_elements =
       data
       |> Enum.map(fn dataset ->
@@ -83,19 +88,33 @@ defmodule Matplotex.Figure.Areal.Spline do
     %Figure{figure | axes: %{axes | element: elements}}
   end
 
-
-
-  defp capture(%Dataset{transformed: transformed, color: color,edge_color: edge_color, line_width: stroke_width}, move_to_def) do
+  defp capture(
+         %Dataset{
+           transformed: transformed,
+           color: color,
+           edge_color: edge_color,
+           line_width: stroke_width
+         },
+         move_to_def
+       ) do
     {moveto, transformed} = List.pop_at(transformed, 0, move_to_def)
     cubic = Enum.slice(transformed, 0..2)
     smooths = blend(transformed, 3)
-    %Spline{type: "figure.spline", moveto: moveto, cubic: cubic, smooths: smooths, fill: color, stroke: edge_color, stroke_width: stroke_width}
+
+    %Spline{
+      type: "figure.spline",
+      moveto: moveto,
+      cubic: cubic,
+      smooths: smooths,
+      fill: color,
+      stroke: edge_color,
+      stroke_width: stroke_width
+    }
   end
 
   defp blend(smooths, start_from) do
-  smooths
-  |>Enum.slice(start_from..-1//1)
-  |>Enum.chunk_every(2)
-
+    smooths
+    |> Enum.slice(start_from..-1//1)
+    |> Enum.chunk_every(2)
   end
 end

lib/matplotex/figure/font.ex

@@ -2,7 +2,7 @@ defmodule Matplotex.Figure.Font do
   @default_font_color "black"
   @default_font_family "Arial, Verdana, sans-serif"
   @default_font_style "normal"
-  @default_font_size 16
+  @default_font_size 12
   @default_font_weight "normal"
   @font_unit "pt"
   @pt_to_inch_ratio 1 / 72

lib/matplotex/figure/two_d.ex

@@ -1,11 +1,11 @@
 defmodule Matplotex.Figure.TwoD do
   defstruct [:x, :y]
 
-  def update(twod, opts, context) do
+  def update(%__MODULE__{x: x, y: y} = twod, opts, context) do
     %__MODULE__{
       twod
-      | x: fetch_from_opts(opts, :x, context),
-        y: fetch_from_opts(opts, :y, context)
+      | x: fetch_from_opts(opts, :x, context) || x,
+        y: fetch_from_opts(opts, :y, context) || y
     }
   end
 

lib/matplotex/helpers.ex

@@ -325,15 +325,46 @@ defmodule Matplotex.Helpers do
     |> copy()
   end
 
+  def multi_hist() do
+    values1 =
+      Nx.Random.key(12) |> Nx.Random.normal(0, 1, shape: {1000}) |> elem(0) |> Nx.to_list()
+
+    bins = 30
+    values2 = Nx.Random.key(13) |> Nx.Random.normal(0, 1, shape: {500}) |> elem(0) |> Nx.to_list()
+
+    Matplotex.hist(values1, bins,
+      x_label: "Value",
+      y_label: "Frequency",
+      title: "Histogram",
+      color: "blue",
+      edge_color: "black",
+      alpha: 0.7,
+      x_ticks_count: 9
+    )
+    |> Matplotex.hist(values2, bins, color: "red")
+    |> Matplotex.show()
+    |> copy()
+  end
+
   def spline() do
     x_nx = Nx.linspace(0, 10, n: 100)
     x = Nx.to_list(x_nx)
     y = x_nx |> Nx.sin() |> Nx.to_list()
 
-
     Matplotex.spline(x, y, x_label: "X", y_label: "Y", edge_color: "green")
     |> Matplotex.show()
     |> copy()
   end
 
+  def multi_spline() do
+    x_nx = Nx.linspace(0, 10, n: 100)
+    x = Nx.to_list(x_nx)
+    y1 = x_nx |> Nx.sin() |> Nx.to_list()
+    y2 = x_nx |> Nx.cos() |> Nx.to_list()
+
+    Matplotex.spline(x, y1, x_label: "X", y_label: "Y", edge_color: "green")
+    |> Matplotex.spline(x, y2, x_label: "X", y_label: "Y", edge_color: "red")
+    |> Matplotex.show()
+    |> copy()
+  end
 end

test/matplotex/figure/areal/spline_test.exs

@@ -2,18 +2,18 @@ defmodule Matplotex.Figure.Areal.SplineTest do
   use Matplotex.PlotCase
   alias Matplotex.Figure
   alias Matplotex.Figure.Areal.Spline
-  setup do
-        x_nx = Nx.linspace(0, 10, n: 100)
-        x = Nx.to_list(x_nx)
-        y = x_nx |> Nx.sin() |> Nx.to_list()
 
-    figure =  Matplotex.spline(x, y, x_label: "X", y_label: "Y")
-     {:ok, %{figure: figure}}
-    end
+  setup do
+    x_nx = Nx.linspace(0, 10, n: 100)
+    x = Nx.to_list(x_nx)
+    y = x_nx |> Nx.sin() |> Nx.to_list()
 
+    figure = Matplotex.spline(x, y, x_label: "X", y_label: "Y")
+    {:ok, %{figure: figure}}
+  end
 
-    test "adds a spline element in a figure",%{figure: figure} do
-      assert %Figure{axes: %Spline{element: elements}} =Spline.materialize(figure)
-      assert Enum.any?(elements, &(&1.type=="figure.spline"))
-    end
+  test "adds a spline element in a figure", %{figure: figure} do
+    assert %Figure{axes: %Spline{element: elements}} = Spline.materialize(figure)
+    assert Enum.any?(elements, &(&1.type == "figure.spline"))
+  end
 end