regquant function

Quantiles and quantile function of a regional frequency distribution

regquant computes quantiles of a regional frequency distribution, i.e., values of the regional growth curve.

regqfunc returns a function that will compute the quantiles.

regquant(f, rfd)

regqfunc(rfd)

Arguments

• f: Vector of probabilities.
• rfd: Object of class rfd, containing the specification of a regional frequency distribution.

Returns

regquant returns a vector of quantiles.

regqfunc returns the qfunc element of rfd. This is a function that takes one argument, which should be a vector of probabilities, and returns a vector of quantiles.

Author(s)

J. R. M. Hosking jrmhosking@gmail.com

See Also

regfit.

Examples

rfit <- regfit(Cascades,"gno")  # Fit regional distribution

# Compute some quantiles
regquant(seq(0.1, 0.9, by=0.1), regfit(Cascades,"gno"))

# Get the quantile function (regional growth curve)
rgc <- regqfunc(rfit)

# Compute quantiles by evaluating the regional growth curve
rgc(seq(0.1, 0.9, by=0.1))

# Plot the regional growth curve
curve(rgc, 0.01, 0.99)