Description Usage Arguments Details Value See Also Examples
A utility for calculating the first row of a Leslie matrix from vectors of interval survival probabilities and agespecific fertility rates.
1  leslie.row1(mx, px, L = NULL, SRB = 1.05, peryear = 5, one.sex = TRUE)

mx 
vector of agespecific fertilities (length=k) 
px 
vector of interval survival probabilities (length=k1) 
L 
personyears lived in the first interval; default

SRB 
sex ratio at birth; default 
peryear 
width of the ageclass/projection interval 
one.sex 
should each element be reduced by a factor
1/(1+SRB)? default 
Calculates the firstrow entries for a Leslie matrix. This utility is particularly useful for constructing simulated Leslie matrices.
A vector of length k, where k is the rank of the projection matrix A.
1 2 3 4 5 6 7 8 9 10 11  ## simulate survival values from a beta(9,1) distribution
px < rbeta(10,9,1)
## simulate fertility values from a gamma(2,10) distribution with age
## at first reproduction = 10
mx < c(0,0,0,rgamma(8,2,10))
A < odiag(px,1)
Fx < leslie.row1(mx,px)
A[1,] < Fx

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