Created
June 6, 2018 14:17
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A small, reproducible example that demonstrates the behaviour described in: https://community.plot.ly/t/multiple-callbacks-executed-by-a-single-input-change/10673
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import numpy as np | |
import pandas as pd | |
from datetime import datetime as dt | |
import pytz | |
import dash | |
import dash_core_components as dcc | |
import dash_html_components as html | |
import plotly.graph_objs as go | |
from plotly import tools | |
app = dash.Dash('auth', url_base_pathname='/') | |
CHOICES = [ | |
{'label': 1, 'value': 'Option 1'}, | |
{'label': 2, 'value': 'Option 2'} | |
] | |
app.layout = html.Div(children=[ | |
html.Div( | |
dcc.DatePickerRange( | |
id='my-date-picker-range', | |
min_date_allowed=dt(2017, 10, 1), | |
max_date_allowed=dt(2018, 8, 1), | |
initial_visible_month=dt(2018, 3, 1), | |
display_format='YYYY/MM/DD', | |
start_date='2018-03-04', | |
end_date='2018-03-06' | |
), style={'text-align': 'center'} | |
), | |
html.Div( | |
dcc.Dropdown( | |
id='extruder-choice', | |
options=CHOICES, | |
value='h74_1_extruder_2_massflow' | |
) | |
), | |
html.Div( | |
dcc.Graph( | |
id='time-series-figure', | |
config={'modeBarButtonsToRemove': ['sendDataToCloud']} | |
), | |
style={ | |
'height': '1000px', | |
} | |
), | |
]) | |
@app.callback( | |
dash.dependencies.Output('time-series-figure', 'figure'), | |
[dash.dependencies.Input('my-date-picker-range', 'start_date'), | |
dash.dependencies.Input('my-date-picker-range', 'end_date'), | |
dash.dependencies.Input('extruder-choice', 'value')] | |
) | |
def update_daterange(startdate, enddate, extruder): | |
date_range = [startdate, enddate] | |
import pdb; pdb.set_trace() | |
return refresh(date_range, extruder) | |
app.config.supress_callback_exceptions = True | |
app.config.update({ | |
# remove the default of '/' | |
'routes_pathname_prefix': '', | |
# remove the default of '/' | |
'requests_pathname_prefix': '' | |
}) | |
x = pd.date_range(start='2018-01-01', end='2018-06-04', freq='H') | |
y = 8 + 5*np.random.random(len(x)) | |
# import pdb; pdb.set_trace() | |
def refresh(date_range, extruder): | |
startdate, enddate = date_range | |
time_series_fig = tools.make_subplots( | |
rows=1, cols=1, | |
specs=[ | |
[{}], | |
] | |
) | |
selection_idx = np.bitwise_and( | |
x > dt.strptime(startdate, '%Y-%m-%d'), | |
x < dt.strptime(enddate, '%Y-%m-%d') | |
) | |
x_selection = x[selection_idx] | |
y_selection = y[selection_idx] | |
trace = go.Scatter( | |
x=x_selection, | |
y=y_selection, | |
marker=dict( | |
symbol='x', | |
color='black', | |
size=3, | |
) | |
) | |
time_series_fig.append_trace(trace, 1, 1) | |
return time_series_fig | |
if __name__ == '__main__': | |
app.run_server(debug=True, port=8051) |
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