Generic function for computing probability density function (PDF) contributions based on a distribution object and observed data.
pdf(d, x, drop = TRUE, ...) log_pdf(d, x, ...) pmf(d, x, ...)
An object. The package provides methods for distribution
objects such as those from
A vector of elements whose probabilities you would like to
determine given the distribution
logical. Should the result be simplified to a vector if possible?
Arguments passed to methods. Unevaluated arguments will generate a warning to catch mispellings or other possible errors.
The generic function
pdf() computes the probability density,
both for continuous and discrete distributions.
pmf() (for the
probability mass function) is an alias that just calls
For computing log-density contributions (e.g., to a log-likelihood)
pdf(..., log = TRUE) can be used or the generic function
Probabilities corresponding to the vector
## distribution object X <- Normal() ## probability density pdf(X, c(1, 2, 3, 4, 5)) pmf(X, c(1, 2, 3, 4, 5)) ## log-density pdf(X, c(1, 2, 3, 4, 5), log = TRUE) log_pdf(X, c(1, 2, 3, 4, 5))
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