I built a toy app that allows the user to label time series segments using key presses. It may be used in scenarios such as labeling a signal by second-level segments, or correcting predicted segment labels output by a machine learning model. [dash_show_n_tell_demo] There are three feature highlig…

Try the example online: https://yzhaoinuw.pythonanywhere.com/ (valid until April 23 2025). Updated code for the toy app: https://github.com/yzhaoinuw/dash_show_n_tell .

Thank you Yue, for creating the toy app and sharing the code :pray:

Time Series Labeling/Segmentation with Key Presses

Dash Python

yzhaoinuw August 24, 2026, 4:03am 4

A follow-up to this thread: this toy grew into a production tool, and the generic, reusable version is now released — details in A Dash cookbook for huge, multichannel time series: from toy labeling demo to lab-deployed desktop app

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Time Series Labeling/Segmentation with Key Presses

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