This is sort-of possible by using a shapes
object in a dcc.Graph
(see Shapes in Python) and making the graph “editable
” by setting dcc.Graph(editable=True, ...)
.
Note that the points themselves inside data
aren’t editable or draggable but objects inside shapes
are. Also note that the type: 'circle'
isn’t a good candidate for this as per Fixed size circle shape · Issue #2193 · plotly/plotly.js · GitHub.
Here is an example that uses a 'type': 'line'
and listens to the relayoutData
property of the dcc.Graph
. This example was adapted from the examples in Part 3. Interactive Graphing and Crossfiltering | Dash for Python Documentation | Plotly
import json
from textwrap import dedent as d
import dash
from dash.dependencies import Input, Output
import dash_core_components as dcc
import dash_html_components as html
app = dash.Dash(__name__)
app.css.append_css({'external_url': 'https://codepen.io/chriddyp/pen/dZVMbK.css'})
styles = {'pre': {'border': 'thin lightgrey solid', 'overflowX': 'scroll'}}
app.layout = html.Div(className='row', children=[
dcc.Graph(
id='basic-interactions',
className='six columns',
figure={
'data': [{
'x': [1, 2, 3, 4],
'y': [4, 1, 3, 5],
'text': ['a', 'b', 'c', 'd'],
'customdata': ['c.a', 'c.b', 'c.c', 'c.d'],
'name': 'Trace 1',
'mode': 'markers',
'marker': {
'size': 12
}
}, {
'x': [1, 2, 3, 4],
'y': [9, 4, 1, 4],
'text': ['w', 'x', 'y', 'z'],
'customdata': ['c.w', 'c.x', 'c.y', 'c.z'],
'name': 'Trace 2',
'mode': 'markers',
'marker': {
'size': 12
}
}],
'layout': {
'shapes': [{
'type': 'line',
'x0': 0,
'x1': 1,
'xref': 'paper',
'y0': 3,
'y1': 3,
'yref': 'y',
'line': {
'width': 4,
'color': 'rgb(30, 30, 30)'
}
}]
}
},
config={
'editable': True,
'edits': {
'shapePosition': True
}
}
),
html.Div(
className='six columns',
children=[
html.Div(
[
dcc.Markdown(
d("""
**Zoom and Relayout Data**
""")),
html.Pre(id='relayout-data', style=styles['pre']),
]
)
]
)
])
@app.callback(
Output('relayout-data', 'children'),
[Input('basic-interactions', 'relayoutData')])
def display_selected_data(relayoutData):
return json.dumps(relayoutData, indent=2)
if __name__ == '__main__':
app.run_server(debug=True)
One of the best ways to explore what’s possible with shapes is to use Chart Studio (Online Graph Maker · Plotly Chart Studio). Here’s an example:
The other option would be to provide a couple of input boxes or even an interactive DataTable and allow the user to edit the points of the chart itself. See usage-editable.py
in GitHub - plotly/dash-table-experiments: NO LONGER SUPPORTED - use https://github.com/plotly/dash-table instead