Test if a Model's Formula is Empty (original) (raw)
| is.empty.model {stats} | R Documentation |
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Description
R's formula notation allows models with no intercept and no predictors. These require special handling internally.is.empty.model() checks whether an object describes an empty model.
Usage
is.empty.model(x)
Arguments
| x | A terms object or an object with a terms method. |
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Value
TRUE if the model is empty
See Also
[lm](../../stats/help/lm.html), [glm](../../stats/help/glm.html)
Examples
y <- rnorm(20)
is.empty.model(y ~ 0)
is.empty.model(y ~ -1)
is.empty.model(lm(y ~ 0))
[Package _stats_ version 4.6.0 Index]