lnorms {popbio} | R Documentation |
Generate random lognormal values for fertility rates
Description
Converts standard normal random values to lognormals with defined means and variances
Usage
lnorms(n, mean = 2, var = 1)
Arguments
n |
number of observations |
mean |
mean value of the fertility rate, default 2 |
var |
variance of the vital rate (not standard deviation), default 1 |
Details
converted Matlab code from Box 8.4 in Morris and Doak (2002)
Value
A vector of random lognormal values
Note
This function could probably be replaced with built-in functions
for the Log Normal Distribution rlnorm
Author(s)
Original Matlab code by Morris and Doak (2002: 281). Adapted to R by Patrick Nantel, 20 June 2005.
References
Morris, W. F., and D. F. Doak. 2002. Quantitative conservation biology: Theory and practice of population viability analysis. Sinauer, Sunderland, Massachusetts, USA.
See Also
Examples
lnorms(1)
# Generate lognormal random fertilities
# for a population of 1000 mature individuals with mean fertility of
# 3 and inter-individual variance in fertility of 1.5.
rndfert <- lnorms(1000, 3,1.5)
summary(rndfert)
hist(rndfert,40, main="Lognormal random fertilities",
xlab="Fertility rate", col="blue")
[Package popbio version 2.8 Index]