Extend (or append) data instead of update

The answer appears to be “no.” As brad previously stated in this thread:


If you manually play around with the Plotly.js library, you’ll see that Plotly.extendTraces is only intended to extend existing traces. That is, any (and all) keys (e.g. x or y ) must be array attributes.

It seems that trying to set “color” (which is set in the “marker” dictionary of a trace) when extending a trace will invoke a similar error as when trying to set name.

Somebody please correct me if I’m wrong! This is a topic that is also of great interest to me.