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from dash import Dash, html, dcc, callback, Output, Input |
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import plotly.express as px |
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import pandas as pd |
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df = pd.read_csv('https://raw.githubusercontent.com/plotly/datasets/master/gapminder_unfiltered.csv') |
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app = Dash(__name__) |
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app.layout = html.Div([ |
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html.H1(children='Title of Dash App', style={'textAlign':'center'}), |
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dcc.Dropdown(df.country.unique(), 'Canada', id='dropdown-selection'), |
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dcc.Graph(id='graph-content') |
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]) |
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@callback( |
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Output('graph-content', 'figure'), |
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Input('dropdown-selection', 'value') |
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) |
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def update_graph(value): |
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dff = df[df.country==value] |
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return px.line(dff, x='year', y='pop') |
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if __name__ == '__main__': |
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app.run(debug=True) |
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