statsmodels.tsa.vector_ar.vecm.select_coint_rank

statsmodels.tsa.vector_ar.vecm.select_coint_rank(endog, det_order, k_ar_diff, method='trace', signif=0.05)[source]

Calculate the cointegration rank of a VECM.

Parameters:

endog : array_like (nobs_tot x neqs)

The data with presample.

det_order : int

  • -1 - no deterministic terms
  • 0 - constant term
  • 1 - linear trend

k_ar_diff : int, nonnegative

Number of lagged differences in the model.

method : str, {"trace", "maxeig"}, default: "trace"

If "trace", the trace test statistic is used. If "maxeig", the maximum eigenvalue test statistic is used.

signif : float, {0.1, 0.05, 0.01}, default: 0.05

The test’s significance level.
Returns:

rank : CointRankResults

A CointRankResults object containing the cointegration rank suggested by the test and allowing a summary to be printed.