ACF 1D
Compute the one-dimensional autocorrelation function of a line profile. Only positive lags are output on the x-axis. The measurement table reports the dominant period from the first positive peak.
Inputs
| Name |
Type |
Required |
Description |
| profile |
LINE |
Yes |
Input line profile |
Outputs
| Name |
Type |
Description |
| acf |
LINE |
Autocorrelation function (positive lags only) |
| measurement |
RECORD_TABLE |
Table with the dominant peak period |
Controls
| Name |
Type |
Default |
Description |
| level |
dropdown |
mean |
Pre-processing: subtract mean before correlation, or none |
Notes
- Only one-sided (positive lag) ACF is returned.
- Peak period detection finds only the first local maximum; multi-periodic signals report only the shortest detected period.
