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Accepted answer

Do you mean the "range / focus chart" functionality that can be seen in the last "monthly abs volume & move" chart on the main dc.js page?

If so, here is the documentation: https://github.com/dc-js/dc.js/blob/develop/web/docs/api-latest.md#dc.coordinateGridMixin+rangeChart

It is a very simple feature and not fully documented, so please ask if you have any questions.

EDIT: noticed that you are talking about multiple "focus charts" for one "range chart". That's not built-in, but it's covered in this Q/A: https://stackoverflow.com/a/27725811/676195

score:0

For reference, my understanding of the question was that you want to automatically rescale the Y axis depending on the changing range of values and I found that the following worked for me:

chart.elasticY(true);

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