Hey there,
Dash newbie here. I managed to create a couple of radar plot using Plotly GO on my Dash dashboard in one of the tabs. I managed to create a smooth expanding radar plot animation by passing 20 frames and have a button to play it, as per the examples, and setting the frame and transition duration to have it execute within about a second.
frames=[]
for i in range(len(df_animate)):
attributes_values_self_radar_input = df_animate.iloc[i].to_list()
attributes_values_self_radar_input.append(df_animate.iloc[i].to_list()[0])
frames.append(go.Frame(
data=go.Scatterpolar(
r=attributes_values_self_radar_input,
theta=attributes_radar_input,
fill='toself'
))
)
self_radar_plot = go.Figure(data=go.Scatterpolar(
r=attributes_values_self_radar_input,
theta=attributes_radar_input,
fill='toself'
),
layout=go.Layout(
xaxis=dict(range=[0, 10], autorange=False),
yaxis=dict(range=[0, 10], autorange=False),
updatemenus=[dict(
type="buttons",
buttons=[dict(label="Play",
method="animate",
args=[None, {"frame": {"duration": 30},
"fromcurrent": True,
"transition": {"duration": 1}}]
)])]
),
frames=frames)
self_radar_plot.update_layout(
polar=dict(
radialaxis=dict(
visible=True,
range=[0, 10]
),
),
showlegend=False,
transition = {'duration': 10}
)
I would love if the animation could auto-play on content load once, either by setting the button’s visible=False and somehow triggering the on_click event or triggering the animation directly. To that end, I tried many things, such as using on-page load callbacks to alter the button’s state and javascript to use the button’s assigned class in order to trigger it, which I tried both including in the /assets folder and importing using grasia_dash_components, such as:
$('.updatemenu-button').each(function(i, obj) {
obj.trigger("click");
});
I believe I’ve seen all available resources on the subject, most being considerably outdated, and I wanted to know if this is at all possible with the current state of Dash, with or without a hack.
For example, an auto_play argument has been made available, but I am not able to find it in the documentation:
People have suggested dcc.Interval (Live Updates | Dash for Python Documentation | Plotly), such as in here:
Animated chart with python plotly without “play” button
but I’m not sure how to trigger the animation (or the corresponding button on-click event, which has no id) from such a callback. Can dcc.Interval be used to fire the animation once without repeating?
Finally, it would be nice to know if it’s impossible and I’m wasting my time, if that’s the case. 
Thanks in advance!