The objective here is to create a process as the image through a field function of another process :
We build the composite process thanks to function and the process .
The library enables to directly convert the function into the vertex-value function thanks to the TrendTransform object which maps into the vertex-value function .
Then, the process is built with the object CompositeProcess from the data: and the process such that:
Box Cox transformation
If the transformation of the process into corresponds to the Box Cox transformation which transforms into a process with stabilized variance, then the corresponding field function is the value function defined by: