statsmodels.tsa.vector_ar.var_model.VARResults.irf¶

VARResults.irf(periods=10, var_decomp=None, var_order=None)[source]¶

Analyze impulse responses to shocks in system

Parameters:¶

periodsint

var_decompndarray (k x k), lower triangular

Must satisfy Omega = P P’, where P is the passed matrix. Defaults to Cholesky decomposition of Omega

var_ordersequence

Alternate variable order for Cholesky decomposition

Returns:¶

irfIRAnalysis