Change individual node size using Dash-Cytoscape

Question

I've been using Dash-Cytoscape for two days now and I tried a lot of things to change the node size individually. I tried this but it didn't work:

import dash
import dash_cytoscape as cyto
import dash_html_components as html

app = dash.Dash(__name__)
app.layout = html.Div([
    cyto.Cytoscape(
        id="cytospace",
        elements=[
            {'data': {'id': 'one', 'label': 'Node 1'}, 'position': {'x': 50, 'y': 50}, 'size':20},
            {'data': {'id': 'two', 'label': 'Node 2'}, 'position': {'x': 200, 'y': 200}, 'size':70},
            {'data': {'source': 'one', 'target': 'two','label': 'Node 1 to 2'}}
        ],
        layout={'name':'preset'},
        style={'height': '95vh',
               'width': '100%'}
    )
])

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

Answer 1

For me the following code allows to adjust the node size:

import dash
import dash_cytoscape as cyto
import dash_html_components as html

app = dash.Dash(__name__)

default_stylesheet = [
    {
        'selector': 'node',
        'style': {
            'background-color': '#BFD7B5',
            'label': 'data(label)',
            'width': "30%",
            'height': "50%"
        }
    }
]

app.layout = html.Div([
    cyto.Cytoscape(
        id="cytospace",
        elements=[
            {'data': {'id': 'one', 'label': 'Node 1'}, 'position': {'x': 50, 'y': 50}, 'size':20},
            {'data': {'id': 'two', 'label': 'Node 2'}, 'position': {'x': 200, 'y': 200}, 'size':70},
            {'data': {'source': 'one', 'target': 'two','label': 'Node 1 to 2'}}
        ],
        layout={'name':'preset'},
        stylesheet=default_stylesheet
    )
])

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