sub
Input Stack:| ts2: TimeSeriesExpr | | ts1: TimeSeriesExpr |
|
⇨ |
Output Stack:| (ts1 - ts2): TimeSeriesExpr | | |
|
Compute a new time series where each interval has the value (a subtractNaN b) where a
and b are the corresponding intervals in the input time series.
NaN values are handled specially: if either input is NaN, it is treated as 0 for the operation.
If both inputs are NaN, the result is NaN. This differs from strict floating point subtraction
where any NaN input produces NaN output.
| :sub |
1.0 |
0.0 |
1.0 |
1.0 |
NaN |
| Input 1 |
2.0 |
0.0 |
1.0 |
1.0 |
NaN |
| Input 2 |
1.0 |
0.0 |
0.0 |
NaN |
NaN |
Parameters
- ts1: First time series or numeric value (minuend)
- ts2: Second time series or numeric value to subtract from the first (subtrahend)
Examples
Subtracting a constant value from a time series:
Subtracting two time series:
| Before | After |
 |  |
name,requestLatency,:eq,
:sum,
name,requestsPerSecond,:eq,
:max,
(,name,),:by
| name,requestLatency,:eq,
:sum,
name,requestsPerSecond,:eq,
:max,
(,name,),:by,
:sub
|
- :add - Add two time series
- :fsub - Strict floating point subtraction (NaN - anything = NaN)
- :mul - Multiply two time series
- :div - Divide two time series
- :neg - Negate a single time series
