ofInterest | R Documentation |

Retrieve or set the `"ofInterest"`

component of a `"gnm"`

(generalized nonlinear model) object.

ofInterest(object) ofInterest(object) <- value

`object` |
an object of class |

`value` |
a numeric vector of indices specifying the subset of
(non-eliminated) coefficients of interest, or |

The `"ofInterest"`

component of a `"gnm"`

object is a named
numeric vector of indices specifying a subset of the non-eliminated
coefficients which are of specific interest.

If the `"ofInterest"`

component is non-NULL, printed summaries of
the model only show the coefficients of interest. In addition
methods for `"gnm"`

objects which may be applied to a subset of
the parameters are by default applied to the coefficients of interest.

These functions provide a way of extracting and replacing the
`"ofInterest"`

component. The replacement function prints the
replacement value to show which parameters have been specified by
`value`

.

A named vector of indices, or `NULL`

.

Regular expression matching is performed using `grep`

with
default settings.

Heather Turner

`grep`

, `gnm`

, `se.gnm`

,
`getContrasts`

,`profile.gnm`

, `confint.gnm`

set.seed(1) ## Fit the "UNIDIFF" mobility model across education levels unidiff <- gnm(Freq ~ educ*orig + educ*dest + Mult(Exp(educ), orig:dest), ofInterest = "[.]educ", family = poisson, data = yaish, subset = (dest != 7)) ofInterest(unidiff) ## Get all of the contrasts with educ1 in the UNIDIFF multipliers getContrasts(unidiff, ofInterest(unidiff)) ## Get estimate and se for the contrast between educ4 and educ5 in the ## UNIDIFF multiplier mycontrast <- numeric(length(coef(unidiff))) mycontrast[ofInterest(unidiff)[4:5]] <- c(1, -1) se(unidiff, mycontrast)

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