Plotly-Dash App with Interactive buttons and Dropdown menu

The name of the pictureThe name of the pictureThe name of the pictureClash Royale CLAN TAG#URR8PPP



Plotly-Dash App with Interactive buttons and Dropdown menu



I am trying to build a Dash app that will support both a drop down menu for each of NY's 27 districts as well as an interactive bar chart. The dataframe looks like this:



enter image description here



I have written the following code:


import dash
import dash_core_components as dcc
import dash_html_components as html
import plotly.graph_objs as go
import pandas as pd

# Read in the data
df = districts_change.drop(['TOTAL'], axis=1)

# Get a list of all the districts
districts = districts_change['DISTRICT'].unique()

# Create the app
app = dash.Dash()

# Populate the layout with HTML and graph components
app.layout = html.Div([
html.H2("New York Congressional Districts"),
html.Div(
[
dcc.Dropdown(
id="DISTRICT",
options=[
'label': i,
'value': i
for i in districts],
value='All Districts'),
],
style='width': '25%',
'display': 'inline-block'),
dcc.Graph(id='funnel-graph'),
])


# Add the callbacks to support the interactive componets
@app.callback(
dash.dependencies.Output('funnel-graph', 'figure'),
[dash.dependencies.Input('DISTRICT', 'value')])
def update_graph(Districts):
if District == "All Districts":
df_plot = df.copy()
else:
df_plot = df[df['DISTRICT'] == Districts]

trace1 = go.Bar(x=districts_change['Year'], y=districts_change[('DEM')], name='DEM')
trace2 = go.Bar(x=districts_change['Year'], y=districts_change[('REP')], name='REP')
trace3 = go.Bar(x=districts_change['Year'], y=districts_change[('CON')], name='CON')
trace4 = go.Bar(x=districts_change['Year'], y=districts_change[('WOR')], name='WOR')
trace5 = go.Bar(x=districts_change['Year'], y=districts_change[('IND')], name='IND')
trace6 = go.Bar(x=districts_change['Year'], y=districts_change[('GRE')], name='GRE')
trace7 = go.Bar(x=districts_change['Year'], y=districts_change[('WEP')], name='WEP')
trace8 = go.Bar(x=districts_change['Year'], y=districts_change[('REF')], name='REF')
trace9 = go.Bar(x=districts_change['Year'], y=districts_change[('OTH')], name='OTH')
trace10 = go.Bar(x=districts_change['Year'], y=districts_change[('BLANK')], name='BLANK')


return
'data': [trace1, trace2, trace3, trace4, trace5,
trace6, trace7, trace8, trace9, trace10],
'layout':
go.Layout(
title='District '.format(Districts),
barmode='group')



if __name__ == '__main__':
app.server.run(port=8000, host='127.0.0.1')



The app runs locally and displays the drop down menu, however, it is not broadcasting the data itself.









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