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from dash import Dash, dcc, html, Input, Output
import plotly.graph_objects as go
import json
import datetime
app = Dash(__name__)
app.layout = html.Div([
html.H4('Interactive color selection with simple Dash example'),
html.P("Select color:"),
dcc.Dropdown(
id="dropdown",
options=['Gold', 'MediumTurquoise', 'LightGreen'],
value='Gold',
clearable=False,
),
dcc.Graph(id="graph"),
])
# pull stock data from json files
timestamps_file = open('timestamps.json', 'r')
timestamps_file_data = timestamps_file.read()
timestamps = json.loads(timestamps_file_data)
timestamps = [datetime.datetime.fromtimestamp(t) for t in timestamps]
prices_file = open('close_prices.json', 'r')
prices = json.loads(prices_file.read())
# print('timestamps:\t', timestamps, '\nprices:\t', prices)
@app.callback(
Output("graph", "figure"),
Input("dropdown", "value"))
def display_color(color):
fig = go.Figure(
data=go.Line(x=timestamps, y=prices, marker_color=color))
return fig
app.run(debug=True)
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