R: Methods for Fitted Interactions

methods.fii {spatstat.core} | R Documentation

## Methods for Fitted Interactions

### Description

These are methods specifically for the class `"fii"` of fitted interpoint interactions.

### Usage

    ## S3 method for class 'fii'
    print(x, ...)

    ## S3 method for class 'fii'
    coef(object, ...)

    ## S3 method for class 'fii'
    plot(x, ...)

    ## S3 method for class 'fii'
    summary(object,...)

    ## S3 method for class 'summary.fii'
    print(x, ...)

    ## S3 method for class 'summary.fii'
    coef(object, ...)

### Arguments

`x,object` | An object of class `"fii"` representing a fitted interpoint interaction.
`...` | Arguments passed to other methods.

### Details

These are methods for the class `"fii"`. An object of class `"fii"` represents a fitted interpoint interaction. It is usually obtained by using the command `fitin` to extract the fitted interaction part of a fitted point process model. See `fitin` for further explanation of this class.

The commands listed here are methods for the generic functions `print`, `summary`, `plot` and `coef` for objects of the class `"fii"`.

Following the usual convention, `summary.fii` returns an object of class `summary.fii`, for which there is a print method. The effect is that, when the user types `summary(x)`, the summary is printed, but when the user types `y <- summary(x)`, the summary information is saved.

The method `coef.fii` extracts the canonical coefficients of the fitted interaction, and returns them as a numeric vector. The method `coef.summary.fii` transforms these values into quantities that are more easily interpretable, in a format that depends on the particular model.

There are also methods for the generic commands `reach` and `as.interact`, described elsewhere.

### Value

The `print` and `plot` methods return `NULL`.

The `summary` method returns an object of class `summary.fii`.

`coef.fii` returns a numeric vector. `coef.summary.fii` returns data whose structure depends on the model.

### Author(s)

Adrian Baddeley Adrian.Baddeley@curtin.edu.au

### See Also

`fitin`, `reach.fii`, `as.interact.fii`

### Examples

      mod <- ppm(cells, ~1, Strauss(0.1))
      f <- fitin(mod)
      f
      summary(f)
      plot(f)
      coef(f)
      coef(summary(f))

[Package spatstat.core version 2.3-0 Index]