I have data-series that looks like this:
[ TS1, null TS2, <VAL2> .... TSn, null ]
I need to replace only nonNull values by the corresponding timestamp.
For example, the above dataseries should become:
[ TS1, null TS2, TS2 .... TSn, null ]
Using timeFunction replaces the values indiscriminately, however, I only need to replace non-null values.