`visible: true` ignored if x, y data arrays are empty

[seansfkelley]

When rending a trace with no data, it can be desirable to always show a legend item even if there are no data points. (Example: user-editable data; if the user deletes all the data it would be nice to stay consistent and just show an empty trace with a legend entry.)

I thought this was possible with visible: true, but that appears to not be the case. See this example for more (add values to x and y and note that the legend pops in along with the data, i.e., it is not present if the data is not present).

#1310 (comment) suggests this would be desirable behavior, but I see no other issues mentioning it.

[etpinard]

Thanks for writing in! I think what #1310 (comment) is suggesting should be considered a breaking change and should probably be added to our v2 wishlist in #420.

In the meantime, I think setting x and y to [null] as in https://codepen.io/etpinard/pen/MBVorO?editors=0010#0 is the simplest workaround available (unfortunately).

[seansfkelley]

Alright, I'll do that for now. I'll leave this issue open so you can move/close at your discretion.

[sorenwacker]

I think I have that same problem. Trying do create an animation frame where dates are inconsistently distributed.

[gvwilson]

Hi - this issue has been sitting for a while, so as part of our effort to tidy up our public repositories I'm going to close it. If it's still a concern, we'd be grateful if you could open a new issue (with a short reproducible example if appropriate) so that we can add it to our stack. Cheers - @gvwilson