statsmodels.tsa.deterministic.TimeTrend.from_string

classmethod TimeTrend.from_string(trend)[source]

Create a TimeTrend from a string description.

Provided for compatibility with common string names.

Parameters
trend{“n”, “c”, “t”, “ct”, “ctt”}

The string representation of the time trend. The terms are:

  • “n”: No trend terms

  • “c”: A constant only

  • “t”: Linear time trend only

  • “ct”: A constant and a time trend

  • “ctt”: A constant, a time trend and a quadratic time trend

Returns
TimeTrend

The TimeTrend instance.