unhandled exception when using plotly-cartesian.js with scatterternary

[greg9504]

Hello,

When the "Toggle show closest data on hover" button is clicked there is an exception triggered in function getNextHover3d, approximately line 395. sceneIds is undefined.

If I switch to the full dist, the exception does not occur.
I noticed this in our app using Plotly version 1.48.3 of npm installed plotly.js-cartesian-dist, however it seems to be there with 1.49.4 as well.

Attached in the zip file is a simple html file with ternary plot that demonstrates the problem. Open dev tools and you'll see the exception.

Three.zip

if you change the dist to point to https://cdnjs.cloudflare.com/ajax/libs/plotly.js/1.49.4/plotly.js the error does not occur.

[etpinard]

Thanks for the report!

Looks like this line:

plotly.js/src/components/modebar/buttons.js

Line 383 in b453045

var sceneIds = fullLayout._subplots.gl3d;

should have

sceneIds = fullLayout._subplots.gl3d || [];

---

Moreover, I wonder what scatterternary is doing in the cartesian bundle, maybe we take it out of there in v2.

[etpinard]

In a codepen: https://codepen.io/etpinard/pen/XWrEwrm