Check whether a model is valid, and if not, find the nearest model which is valid.

`emend(object, …)`

object

A statistical model, belonging to some class.

…

Arguments passed to methods.

Another model of the same kind.

The function `emend`

is generic,
and has methods for several classes of statistical models
in the spatstat package (mostly point process models).
Its purpose is to check whether a given model is valid
(for example, that none of the model parameters are `NA`

)
and, if not, to find the nearest model which is valid.

See the methods for more information.