How to use transition with timer?

[moroshko]

@mbostock It would be great to collect your thoughts on this one: http://stackoverflow.com/q/41800541/247243

The proposed solution feels somewhat hacky. I wonder if we can use d3.active() to solve this?

[mbostock]

It looks like you are starting a transition inside a timer callback, which means you are starting a new transition 60 times a second. Not sure what you are trying to accomplish.

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Thank you! 🤗

[mbostock]

Here’s a “fixed” version of your code:

https://bl.ocks.org/mbostock/a29e1eeb2bb15c97663dd336cd13f121

But, I still wouldn’t recommend this approach because you’re doing a lot of needless work on every tick of the timer. It’d be better to do that work only when the data changes (i.e., when the button is pressed).

Based solely on what you’ve shared, I’d do something like this, where you create a short-lived transition for each entering circle on click, and the transition cleans itself up when the circle is no longer needed:

https://bl.ocks.org/mbostock/ad550c9d6d156ac726b45f48fa6ff2c7

[moroshko]

Thanks Mike, this is much more helpful than the previous response 👍