Change Sheet Data from a Select
Refresh your analysis with new data, configured through a Dash select component.
Motivation
You have a dropdown that allows users to select a specific dataset.
You want to then automatically load this data directly into the Mito spreadsheet.
To do so, you simply need to write to the data
parameter of the Mito spreadsheet.
Valid types for data
data
The data
parameter should be a list of dicts with strings as keys and values of type string, number, or boolean. For example, valid data might be:
# Passing the data
[
{'Column 1': 1, 'Column 2': 4},
{'Column 1': 2, 'Column 2': 5},
{'Column 1': 3, 'Column 2': 6}
]
# Results in Mito displaying the dataframe
df = pd.DataFrame({'Column 1': [1, 2, 3], 'Column 2': [4, 5, 6]})
You can go from Pandas dataframe to data
format with the following code:
df = pd.DataFrame({'Column 1': [1, 2, 3], 'Column 2': [4, 5, 6]})
df.to_dict('records') # Returns data in the correct format.
Note that Mito aims to accept the same data
input as the Dash Data Table.
Examples
Change the data in the Mito spreadsheet based on a select
from dash import Dash, callback, Input, Output, html, dcc
from mitosheet.mito_dash.v1 import Spreadsheet, mito_callback, activate_mito
import pandas as pd
app = Dash(__name__)
activate_mito(app)
app.layout = html.Div([
html.H1("Stock Analysis", style={'color': 'white'}),
# A dropdown for selecting between two dataframes
dcc.Dropdown(
id='dropdown',
options=[
{'label': 'Stock Data', 'value': 'stock_data'},
{'label': 'Stock Data 2', 'value': 'stock_data_2'},
],
value='stock_data'
),
Spreadsheet(id={'type': 'spreadsheet', 'id': 'sheet'}),
])
@callback(
Output({'type': 'spreadsheet', 'id': 'sheet'}, 'data'),
Input('dropdown', 'value')
)
def update_spreadsheet_data(dropdown_value):
if dropdown_value == 'stock_data':
df = pd.DataFrame({'First Data': [1, 2, 3], 'Second Data': [4, 5, 6]})
else:
df = pd.DataFrame({'First Data': [7, 8, 9], 'Second Data': [10, 11, 12]})
return df.to_dict('records')
if __name__ == '__main__':
app.run_server(debug=True)
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