Computes the Allan variance of a data set.
| Type | Intent | Optional | Attributes | Name | ||
|---|---|---|---|---|---|---|
| real(kind=real64), | intent(in), | dimension(:) | :: | x |
The N-element data set to analyze. |
|
| real(kind=real64), | intent(in), | optional | :: | dt |
An optional input specifying the time increment between samples in x. If not specified, this value is set to 1. |
|
| class(errors), | intent(inout), | optional, | target | :: | err |
A mechanism for communicating errors and warnings to the caller. Possible warning and error codes are as follows. - FS_NO_ERROR: No errors encountered. - FS_MEMORY_ERROR: Occurs if there is a memory allocation error. |
An M-by-2 array containing the results where M is N / 2 - 1 if N is even; else, M is (N - 1) / 2 - 1 if N is odd. The first column contains the averaging times associated with the M results stored in the second column.