DrawGraphDash 2

app.layout = html.Div([
                html.Div(dcc.Graph(id='Graph',figure=fig)),
                html.Div(className='row', children=[
                    html.Div([html.H2('Overall Data'),
                              html.P('Num of nodes: ' + str(len(G.nodes))),
                              html.P('Num of edges: ' + str(len(G.edges)))],
                              className='three columns'),
                    html.Div([
                            html.H2('Selected Data'),
                            html.Div(id='selected-data'),
                        ], className='six columns')
                    ])
                ])


@app.callback(
    Output('selected-data', 'children'),
    [Input('Graph','selectedData')])
def display_selected_data(selectedData):
    num_of_nodes = len(selectedData['points'])
    text = [html.P('Num of nodes selected: '+str(num_of_nodes))]
    for x in selectedData['points']:
        material = int(x['text'].split('<br>')[0][10:])
        text.append(html.P(str(material)))
    return text