One instant of a time axis, in terms a reader can hear.
ECharts hands over epoch milliseconds. A date is announced as the day it
is when the instant lands exactly on a midnight -- which is what daily
data does -- and as the full timestamp otherwise, so nothing is rounded
away from a chart that carries a time of day.
Whose midnight is the chart's useUTC. ECharts draws in local time unless
told otherwise, and a local midnight read in UTC is announced as the day
before east of Greenwich and as eight in the morning in California -- not
the date on the axis. Superset and Metabase both set useUTC: true.
One instant of a time axis, in terms a reader can hear.
ECharts hands over epoch milliseconds. A date is announced as the day it is when the instant lands exactly on a midnight -- which is what daily data does -- and as the full timestamp otherwise, so nothing is rounded away from a chart that carries a time of day.
Whose midnight is the chart's
useUTC. ECharts draws in local time unless told otherwise, and a local midnight read in UTC is announced as the day before east of Greenwich and as eight in the morning in California -- not the date on the axis. Superset and Metabase both setuseUTC: true.A non-time axis is left as the number it is.