transectHolder function

Function to construct an object representing a collection of trapTransect objects.

This function constructs a transectHolder object given a collection of trapTransect objects and a nominated probability density function to fit to the seed count profile.

transectHolder(..., family = "exponential")

Arguments

• ...: one or more trapTransect objects
• family: the probability density function to fit to the distance count profiles.

Details

This function is a constructor.

The nominated distribution, which must be one of those distributions that can be fit by fitdistr of the MASS package.

Returns

A transectHolder object, which is a list comprising - transects: a list one or more trapTransect objects,

• family: the name of the distribution to which the transect data has been fit,

• parameters: the estimated parameters for that distribution,

• rng: the corresponding random number generator for simulations.

References

Jones, O.D., R. Maillardet, and A.P. Robinson. 2009. An Introduction to Scientific Programming and Simulation, Using R. Chapman And Hall/CRC.

See Also

trapTransect

Examples

transect.1 <- trapTransect(distances = 1:4,
                        seed.counts = c(4, 3, 2, 0))
transect.2 <- trapTransect(distances = 1:3,
                        seed.counts = c(3, 2, 1))
transect.3 <- trapTransect(distances=(1:5)/2,
                        seed.counts = c(3, 4, 2, 3, 1))
allTraps <- transectHolder(transect.1, transect.2, transect.3,
                           family="Weibull")
allTraps