Add line chart type

line_chart.py

@@ -0,0 +1,19 @@
+from chart import Chart
+from pandas import Series
+from plotly.graph_objects import Scatter
+
+class LineChart(Chart):
+
+    def __init__(self, x: Series, y: Series, name: str):
+        self.x = x
+        self.y = y
+        self.name = name
+
+    def trace(self) -> Scatter:
+        return Scatter(
+            x = self.x,
+            y = self.y,
+            name = self.name,
+            mode = 'lines',
+            line=dict(color = 'yellow') # TODO: Make this configurable.
+        )

line_chart_example.py

@@ -0,0 +1,16 @@
+from database.ohlc import ohlc
+from datetime import datetime, timedelta
+
+from line_chart import LineChart
+from plot import plot
+
+end_date = datetime.today().date()
+start_date = (end_date - timedelta(days=90))
+data = ohlc('SPX.XO', '1d', start_date = start_date, end_date = end_date)
+
+line_chart = LineChart(
+    x = data['Timestamp'], 
+    y = data['Close'],
+    name = 'SPX'
+)
+plot(line_chart).show()