Vertical Line: one endpoint fixed, other to edge of graph

[AIMPED]

Not sure if I understand the question, but v_lines are annotations. You can create them manually, here an example:

Multiple vertical cursors for harmonics search

Sure, that’s what I had in mind: from dash import Dash, html, dcc, Output, Input, Patch import plotly.graph_objects as go app = Dash( __name__, external_stylesheets=[ ] ) def create_shapes(*positions): shapes = [ {'type': 'line', 'x0': pos, 'x1': pos, 'xref': 'x', 'y0': 0, 'y1': 1, 'yref': 'y domain' } for pos in positions ] return shapes app.layout = html.Div( [ dcc.Graph( …