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import dash | |
import dash_core_components as dcc | |
import dash_html_components as html | |
import plotly.graph_objs as go | |
import pandas as pd | |
app = dash.Dash() | |
df = pd.read_csv( | |
'https://raw.githubusercontent.com/' | |
'plotly/datasets/master/' | |
'1962_2006_walmart_store_openings.csv') | |
app.layout = html.Div([ | |
html.H1('Walmart Store Openings'), | |
html.Div(id='text-content'), | |
dcc.Graph(id='map', figure={ | |
'data': [{ | |
'lat': df['LAT'], | |
'lon': df['LON'], | |
'marker': { | |
'color': df['YEAR'], | |
'size': 8, | |
'opacity': 0.6 | |
}, | |
'customdata': df['storenum'], | |
'type': 'scattermapbox' | |
}], | |
'layout': { | |
'mapbox': { | |
'accesstoken': 'pk.eyJ1IjoiY2hyaWRkeXAiLCJhIjoiY2ozcGI1MTZ3MDBpcTJ3cXR4b3owdDQwaCJ9.8jpMunbKjdq1anXwU5gxIw' | |
}, | |
'hovermode': 'closest', | |
'margin': {'l': 0, 'r': 0, 'b': 0, 't': 0} | |
} | |
}) | |
]) | |
@app.callback( | |
dash.dependencies.Output('text-content', 'children'), | |
[dash.dependencies.Input('map', 'hoverData')]) | |
def update_text(hoverData): | |
s = df[df['storenum'] == hoverData['points'][0]['customdata']] | |
return html.H3( | |
'The {}, {} {} opened in {}'.format( | |
s.iloc[0]['STRCITY'], | |
s.iloc[0]['STRSTATE'], | |
s.iloc[0]['type_store'], | |
s.iloc[0]['YEAR'] | |
) | |
) | |
app.css.append_css({ | |
'external_url': 'https://codepen.io/chriddyp/pen/bWLwgP.css' | |
}) | |
if __name__ == '__main__': | |
app.run_server(debug=True) |
In line 44, in update_text
s = df[df['storenum'] == hoverData['points'][0]['customdata']]
TypeError: 'NoneType' object is not subscriptable
Because when initialization, the hoverData is empty. You can add default value of
html.Div(id='text-content')
In line 44, in update_text
s = df[df['storenum'] == hoverData['points'][0]['customdata']]
TypeError: 'NoneType' object is not subscriptable
Because when initialization, the hoverData is empty. You can add default value of
html.Div(id='text-content')
where i have to add default value in code i didn't get idea.
In line 44, in update_text
s = df[df['storenum'] == hoverData['points'][0]['customdata']]
TypeError: 'NoneType' object is not subscriptableBecause when initialization, the hoverData is empty. You can add default value of
html.Div(id='text-content')
where i have to add default value in code i didn't get idea.
Sorry, html.Div(id='text-content') is correct, you do not need edit it.
The input data is comes from Graph "map", in line 18. You should inspect the dcc.Graph definition from official doc, it should have an attribute 'value' or something.
In line 44, in update_text
s = df[df['storenum'] == hoverData['points'][0]['customdata']]
TypeError: 'NoneType' object is not subscriptable