nParam: Number of model parameters

Description

This function returns the number of model parameters. The default method returns the component x$param$nParam.

Usage

nParam(x, ...)
## S3 method for class 'default':
nParam(x, \dots)
## S3 method for class 'lm':
nParam(x, \dots)

Arguments

a statistical model

...

other arguments for methods

Value

Number of parameters in the model

Details

Not all parameters need to be free nor independent. The number may depend on the normalisation.

Examples

Run this code

# Construct a simple OLS regression:
x1 <- runif(100)
x2 <- runif(100)
y <- 3 + 4*x1 + 5*x2 + rnorm(100)
m <- lm(y~x1+x2)  # estimate it
summary(m)
nParam(m) # you get 3

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