exppois {VGAM} | R Documentation |
Density, distribution function, quantile function and random generation for the exponential poisson distribution.
dexppois(x, lambda, betave = 1, log = FALSE) pexppois(q, lambda, betave = 1) qexppois(p, lambda, betave = 1) rexppois(n, lambda, betave = 1)
x, q |
vector of quantiles. |
p |
vector of probabilities. |
n |
number of observations.
If |
lambda, betave |
both positive parameters. |
log |
Logical.
If |
See exppoisson
, the VGAM family function
for estimating the parameters,
for the formula of the probability density function and other details.
dexppois
gives the density,
pexppois
gives the distribution function,
qexppois
gives the quantile function, and
rexppois
generates random deviates.
J. G. Lauder, jamesglauder@gmail.com
## Not run: lambda = 2; betave = 2; nn = 201 x = seq(-0.05, 1.05, len = nn) plot(x, dexppois(x, lambda, betave), type = "l", las = 1, ylim = c(0, 5), ylab = paste("[dp]exppoisson(lambda = ", lambda, ", betave = ", betave, ")"), col = "blue", cex.main = 0.8, main = "Blue is density, orange is cumulative distribution function", sub = "Purple lines are the 10,20,...,90 percentiles") lines(x, pexppois(x, lambda, betave), col = "orange") probs = seq(0.1, 0.9, by = 0.1) Q = qexppois(probs, lambda, betave) lines(Q, dexppois(Q, lambda, betave), col = "purple", lty = 3, type = "h") lines(Q, pexppois(Q, lambda, betave), col = "purple", lty = 3, type = "h") abline(h = probs, col = "purple", lty = 3) max(abs(pexppois(Q, lambda, betave) - probs)) # Should be 0 ## End(Not run)