I can draw the symbol at the end of the arrow "most recent". That is a scatter layer with two points from two different data series.
The LINE TAIL (to the most recent dot) is the challenge? How to do this ? I can lots of dots the same way as the you draw the 'most recent' symbol, but how does one draw the line (before the .layout call)
NOTE: I am not interested in the small dots within the tail
If the data representation has only one y-value, it is simply referred to as "value". If the data representation has multiple y-values (such as a OHLC bar symbol), they may be referred to by using different names depending on the symbol type. You may refer to our sample code the examples.