OHLC charts

lib/chart/gallery/ohlc_candle.sample

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+data = [
+  [~N[2023-12-28 00:00:00], "AAPL", 34049900, 194.14, 194.66, 193.17, 193.58],
+  [~N[2023-12-27 00:00:00], "AAPL", 48087680, 192.49, 193.50, 191.09, 193.15],
+  [~N[2023-12-26 00:00:00], "AAPL", 28919310, 193.61, 193.89, 192.83, 193.05],
+  [~N[2023-12-25 00:00:00], "AAPL", 37149570, 195.18, 195.41, 192.97, 193.60],
+  [~N[2023-12-24 00:00:00], "AAPL", 46482550, 196.10, 197.08, 193.50, 194.68],
+  [~N[2023-12-23 00:00:00], "AAPL", 52242820, 196.90, 197.68, 194.83, 194.83],
+  [~N[2023-12-22 00:00:00], "AAPL", 40714050, 196.16, 196.95, 195.89, 196.94],
+  [~N[2023-12-21 00:00:00], "AAPL", 55751860, 196.09, 196.63, 194.39, 195.89]
+]
+
+test_data = Dataset.new(data, ["Date", "Ticker", "Volume", "Open", "High", "Low", "Close"])
+
+options = [
+  mapping: %{datetime: "Date", open: "Open", high: "High", low: "Low", close: "Close"},
+  style: :candle,
+  title: "AAPL"
+]
+
+Contex.Plot.new(test_data, Contex.OHLC, 500, 400, options)
+  |> Contex.Plot.titles("Apple Stock Price", "")
+  |> Contex.Plot.axis_labels("", "")
+  |> Contex.Plot.plot_options(%{})

lib/chart/gallery/ohlc_charts.ex

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+defmodule Contex.Gallery.OHLCCharts do
+  import Contex.Gallery.Sample, only: [graph: 1]
+
+  @moduledoc """
+  A gallery of OHLC Charts.
+
+  > #### Have one to share? {: .warning}
+  >
+  > Do you have an interesting plot you want to
+  > share? Something you learned the hard way that
+  > should be here, or that's just great to see?
+  > Just open a ticket on GitHub and we'll post it here.
+
+
+  """
+
+  @doc """
+  Some OHLC charts.
+
+
+  #{graph(title: "A simple candle OHLC chart",
+  file: "ohlc_candle.sample")}
+
+  #{graph(title: "A simple tick OHLC chart",
+  file: "ohlc_tick.sample")}
+
+
+  """
+  def plain(), do: 0
+end

lib/chart/gallery/ohlc_tick.sample

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+data = [
+  [~N[2023-12-28 00:00:00], "AAPL", 34049900, 193.58, 194.14, 194.66, 193.17],
+  [~N[2023-12-27 00:00:00], "AAPL", 48087680, 193.15, 192.49, 193.50, 191.09],
+  [~N[2023-12-26 00:00:00], "AAPL", 28919310, 193.05, 193.61, 193.89, 192.83],
+  [~N[2023-12-25 00:00:00], "AAPL", 37149570, 193.60, 195.18, 195.41, 192.97],
+  [~N[2023-12-24 00:00:00], "AAPL", 46482550, 194.68, 196.10, 197.08, 193.50],
+  [~N[2023-12-23 00:00:00], "AAPL", 52242820, 194.83, 196.90, 197.68, 194.83],
+  [~N[2023-12-22 00:00:00], "AAPL", 40714050, 196.94, 196.16, 196.95, 195.89],
+  [~N[2023-12-21 00:00:00], "AAPL", 55751860, 195.89, 196.09, 196.63, 194.39]
+]
+
+test_data = Dataset.new(data, ["Date", "Ticker", "Volume", "Close", "Open", "High", "Low"])
+
+options = [
+  mapping: %{datetime: "Date", open: "Open", high: "High", low: "Low", close: "Close"},
+  style: :tick,
+  title: "AAPL"
+]
+
+Contex.Plot.new(test_data, Contex.OHLC, 500, 400, options)
+  |> Contex.Plot.titles("Apple Stock Price", "")
+  |> Contex.Plot.axis_labels("", "")
+  |> Contex.Plot.plot_options(%{})