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TypeError when zooming between datapoints

See original GitHub issue

An error that I’ve encountered when working on LiveDashboard., but I think it makes more sense to describe it here. 😃

Reproduced the error with following versions:

v1.0.7
v1.0.8
Latest master

When trying to zoom in I sometimes encounter:

TypeError: Cannot read property '2' of undefined

Screenshot from the inspector:

How to reproduce (with phoenix livedashboard):

As far as I can tell this happens when trying to zoom (by selecting an area with the mouse) and the selected area does not include any datapoints.

Open LiveDashboard
Click metrics -> VM
Wait for a datapoint (or two) to load
Try zooming in in a space between datapoints

Issue Analytics

State:
Created 3 years ago
Comments:7 (3 by maintainers)

Top GitHub Comments

1reaction

leeoniyacommented, May 24, 2020

y auto-scaling ain’t gonna work when there’s nothing in the view to scale by.

you can either prevent zooming to locations with no datapoints by defining a custom scales.x.range or returning some fallback min/max in a custom scales.y.range.

https://jsfiddle.net/x8wsmg2a/

0reactions

hz2018tvcommented, May 25, 2020

updated to the latest repo, havent seen this error so far. actually I am not sure what triggers it, just noticed that using mouse wheel for zooming did it more, and it is hard for user to check data with mouse movement. thanks.