obsInfo function

Returns the Observed Information Matrix --- Generic Function

Returns the observed information matrix from a fitted model object.

obsInfo(object, ...)

Arguments

• object: any fitted model object for which the observed information matrix can be calculated.
• ...: absorbs any additional argument.

Details

This function is generic (see methods); method functions can be written to handle specific classes of data. Classes which already have methods for this function include: nlreg.

Returns

the observed information matrix for a fitted regression model.

See Also

obsInfo.nlreg, nlreg.object, expInfo

Examples

data(metsulfuron)
metsulfuron.nl <- 
    nlreg( log(area) ~ log( b1+(b2-b1) / (1+(dose/b4)^b3) ),
           weights = ~ ( 1+dose^exp(g) )^2, data = metsulfuron, 
           start = c(b1 = 138, b2 = 2470, b3 = 2, b4 = 0.07, g = log(0.3)), 
           hoa = TRUE)
obsInfo( metsulfuron.nl )