.load() json needs keys included

[greenafrican]

Seems as though you need to re-include chart.internal.config.data_keys when loading new json data:

chart.load({json: newData, keys: chart.internal.config.data_keys});

This seems unnecessary but otherwise you get an Uncaught Error: x is not defined for id = "0"

[abacaj]

That's because there is a bug in c3.js :) - the keys are not being stored from what I can see in the codebase.

[greenafrican]

The keys are being stored in chart.internal.config.data_keys, hence me logging the issue and why the workaround works.

[abacaj]

I misunderstood then, you were able to work around it by using the internal config?

[aendra-rininsland]

This seems like it's sort of intentional, given that C3 doesn't know the structure of the JSON being loaded in. In reality, your new data will likely have the same schema, so the second parameter should just default to chart.internal.config.data_keys.

Marking as enhancement, easy PR if anyone wants it.