nObs | R Documentation |
Returns number of observations for statistical models. The default
method assumes presence of a component param$nObs
in x
.
nObs(x, ...)
## Default S3 method:
nObs(x, ...)
## S3 method for class 'lm'
nObs(x, ...)
x |
a statistical model, such as created by |
... |
further arguments for methods |
This is a generic function. The default method returns the component
x$param$nObs
. The lm
-method is based on
qr-decomposition, in the same way as the does summary.lm
.
numeric, number of observations
Ott Toomet, otoomet@econ.au.dk
# 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
nObs(m)
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