Description Usage Arguments Details Value See Also Examples
This function converts the covariance matrix from a fitted model into the correlation matrix.
| 1 | 
| object | any fitted model object from which a covariance matrix may be extracted. | 
| ... | absorbs any additional argument. | 
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, summary.nlreg, mpl and summary.mpl.
the correlation matrix of the estimates from a fitted model.
var2cor.nlreg, var2cor.mpl, 
methods
| 1 2 3 4 5 6 7 8 9 10 | 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 )
var2cor( metsulfuron.nl )
##
metsulfuron.sum <- summary( metsulfuron.nl, corr = FALSE )
var2cor( metsulfuron.sum )
 | 
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