Hi I have been trying to put a dash app together that is plotting a scatter plot. And the plot keeps updating as data changes in the database. One thing I couldn’t figure out is if a point of the plot is clicked and the plot updates due to updated data, how can I retain the clicked point after the …

Hi @cknatarajan welcome to the forum! You can use a dcc.Store which is updated when the clickData property of your graph changes, and add the new clicked data to the dcc.Store. See https://dash.plotly.com/dash-core-components/store for the documentation of dcc.Store.

Thank you @Emmanuelle ! That is an interesting idea. But when i was reading up on clickData and it seems like it is a readonly property: clickData ( dict ; optional): Data from latest click event. Read-only. Can i set clickData as an Output of the callback? I am going to test it but I wanted to ma…

Yeah @Emmanuelle I just tested it out, and I cannot set the clickData property.

Have you tried the uirevision property? [image] mega Preserving UI State, like Zoom, in dcc.Graph with uirevision with Dash Dash Python wave Hello everyone, happy monday slightly_smiling_face I’d to share with you a really cool dash-core-components prerelease: the abilit…

I was suggesting to use the clickData as input and to store these data somewhere else like in a dcc.Store. Why would you need to update clickData as well? It is indeed read only.

Thank you @Emmanuelle , I should have clarified that I needed the clicked data to be retained and reflected on the plot after the plot updates. @Emil - that’s a great suggestion but I couldn’t figure out activating uirevision based on multiple inputs - I have a data update callback that should retai…

@cknatarajan - As i understand, the uirevision property work in a such way that the graph is “reset” (zoom etc.) only when the UI revision changes. Hence if you have inputs [a,b,c,d] and the graph should only be reset when a or b changes, you should set the uirevision based on (a,b), e.g. to somethi…

@Emil - Thanks so much, this worked perfectly. Actually the json implementation worked! Really cool stuff, thanks for the help.

Retain clicked data when the plot is updated

Dash Python

Emil March 27, 2020, 8:41pm 5

Have you tried the uirevision property?

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Retain clicked data when the plot is updated

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