Find the time or frequency where a probed value hits a maximum or minimum.
min(probe="p(d)" begin=time end=time last first arg)
| arg name | default | description |
|---|---|---|
| probe | required | The name of a probe to measure. |
| arg | false | Find the time or frequency at which the min or max occurs. (instead of the value) |
| begin | -infinity | The window begins at this time or frequency. |
| end | +infinity | The window ends at this time or frequency. |
| first | true | Find the first min or max in the window. (Cancels last.) |
| last | false | Find the last min or max in the window. (Cancels first.) |
measure maxvalue = max(probe="v(out)" cross=0 last)
Find the maximum value of v(out).
measure t2 = max(probe="v(out)" last arg)
Find the last time when a maximum occurred.
measure t1 = max(probe="v(out)" arg last before=t2)
Find the last time when a maximum occurred before t2.
param period = {t2-t1}
param frequency = {1/period}
Params are interpreted like a functional language so they will be updated whenever t1 or t2 changes.
measure t0 = min(probe="v(out)" arg last before=t2)
Find the last time when a minimum occurred before t2.
param risetime = {t2-t0}