Floating point addition operator. Compute a new time series where each interval has the
value (a + b) where a and b are the corresponding intervals in the input time
series.
:fadd
3.0
0.0
1.0
NaN
NaN
Input 1
2.0
0.0
1.0
1.0
NaN
Input 2
1.0
0.0
0.0
NaN
NaN
Note in many cases NaN will appear in data, e.g., if a node was brought up and started
reporting in the middle of the time window for the graph. This can lead to confusing
behavior if added to a line that does have data as the result will be NaN. Use the
add operator to treat NaN values as zero for combining with other time
series.