# Trend computation¶

A multivariate stochastic process of dimension where may write as the sum of a trend function and a centered multivariate stochastic process of dimension as follows:

(1)

The objective here is to identify the trend function from a given field of the process and then to remove this last one from the initial field. The resulting field is a realization of the centered process . The library also allows to define the function and to remove it from the initial field to get the resulting centered field.

Examples: