Hi everyone,
Just wanted to give everyone heads up, I'm working on adding Annotations
and Overlays to time series line charts in Superset.
I'll probably have something done by next week. This is how it will work:
There are 3 different types of annotations:
1. Events. Events are a list of dates with descriptions. They will be
displayed as vertical lines. Their description will show up in the tooltips
if you hover over them. They are fetched from a "table" slice, that
contains the data.
2. Timeseries. Timeseries are are added as an additional line on the
line chart. The name and the display properties can be configured. The data
is fetched from any timeseries slce.
3. Formulas. Formulas are added as an additional line to the chart. You
will be able to enter a mathematical expression, that will be evaluated on
the client side using "mathjs". You will be able to specify display
properties. You will be able to specify any mathematical formula e.g
- y = 500 (horizontal line)
- y = 0.2x (line with inclination of 0.2)
- y = x^2 (parabola)
Let me know if you have any concerns or can think of missing features.
Fabian
