Updating status in dcc.TextArea

Dash Python
1 
import dash
import dash_core_components as dcc
import dash_html_components as html
import pandas as pd
import plotly.graph_objs as go

app = dash.Dash()
df = pd.read_csv(
    'https://gist.githubusercontent.com/chriddyp/' +
    '5d1ea79569ed194d432e56108a04d188/raw/' +
    'a9f9e8076b837d541398e999dcbac2b2826a81f8/'+
    'gdp-life-exp-2007.csv',index_col=0)

uniq_cont=df.continent.unique()

app.layout = html.Div([
	
	
    html.H4(children='US Agriculture Exports (2011)'),
	html.Label('Continent   '),	
	html.Div([
	dcc.Dropdown(
            id='xdropdown',
            options=[{'label': i, 'value': i} for i in uniq_cont],
            value='Asia',
             )],
	style={'width': '38%', 'display': 'inline-block'}),
	dcc.Textarea(
	id='my_text',
    placeholder='Enter a value...',
    value='',
    style={'width': '100%'}
		),
	dcc.Graph(id='graph-with-dropdown')
		])
	
	
@app.callback(
	dash.dependencies.Output('graph-with-dropdown','figure'),
	[dash.dependencies.Input('xdropdown','value')
	#,dash.dependencies.Input('ydropdown', 'value')
	])
def update_graph(xdropdown):
    dff = df[df['continent'] == xdropdown]
    return {'data':[go.Scatter(x=dff[dff['continent'] == xdropdown]['life expectancy'],y=dff[dff['continent'] == xdropdown]['gdp per capita'],text=dff[dff['continent'] == xdropdown]['country'],mode='markers',marker={'size': 15,'opacity': 0.5,'line': {'width': 0.5, 'color': 'white'}
            })],
	'layout': go.Layout(
      xaxis={
                'title':'life expectancy',
            },
            yaxis={
                'title': 'gdp per capita',
            },
            margin={'l': 40, 'b': 40, 't': 10, 'r': 0},
            hovermode='closest')}

@app.callback(
   # dash.dependencies.Output('text_area', component_property='children'),
   # [dash.dependencies.Input(component_id='my-id', component_property='value')])
def update_output_div(xdropdown):
    return {print('{:.1f}'.format(df[df['continent']==xdropdown].describe().describe().loc['mean','life expectancy']))}


if __name__ == '__main__':
    app.run_server(debug=True)

Iā€™m a new user to DASH , would like to update the mean of selected continent in the textarea space but not sure how to call dependencies for text_area .

Thanks in advance .

2

I believe that you want to update the value property of the text area component. Here are all of the properties of the Textarea component: https://dash.plot.ly/dash-core-components/textarea