Options for the unit root tests for order of integration

unitroot_options(ndiffs_alpha = 0.05, nsdiffs_alpha = 0.05,
ndiffs_pvalue = ~feasts::unitroot_kpss(.)["kpss_pvalue"],
nsdiffs_pvalue = ~feasts::feat_stl(., .period)[2] < 0.64)

## Arguments

ndiffs_alpha, nsdiffs_alpha |
The level for the test specified in the `pval` functions As long as `pval < alpha` , differences will be added. |

ndiffs_pvalue, nsdiffs_pvalue |
A function (or lambda expression) which returns the probability of the . As long as `pval < alpha` , differences will be added.
For the function for the seasonal p-value, the seasonal period will be provided as the `.period` argument to this function.
A vector of data to test is available as `.` or `.x` . |

## Value

A list of parameters