mixdist (version 0.5-5)

pike65sg: Length-Frequency Data with Subsamples for Heming Lake Pike

Description

The raw data pikeraw give the lengths of 523 pike (Esox lucius), and there are known to be five age-groups in the sample. After grouping the data, we take subsamples from some intervals to determine the age group, and then obtain this data set.

The pike65sg data frame has 25 rows and 7 columns.

Usage

data(pike65sg)

Format

This data frame contains the following columns:

length

the boundaries of grouping intervals.

freq

the frequencies of observation falling into each interval.

age1

the numbers of observation in the subsamples belonging to the first age group.

age2

the numbers of observation in the subsamples belonging to the second age group.

age3

the numbers of observation in the subsamples belonging to the third age group.

age4

the numbers of observation in the subsamples belonging to the fourth age group.

age5

the numbers of observation in the subsamples belonging to the fifth age group.

References

Macdonald, P.D.M. (1987). Analysis of length-frequency distributions. In R.C. Summerfelt and G.E. Hall [editors], Age and Growth of Fish, Iowa State University Press, Ames, Iowa. pp 371-384.

http://www.math.mcmaster.ca/peter/mix/demex/expike.html

Examples

# NOT RUN {
data(pike65sg)
data(pikepar)
fit1 <- mix(pike65sg, pikepar, "gamma", mixconstr(consigma = "CCV"), usecondit = TRUE)
plot(fit1)
fit2 <- mix(pike65sg, pikepar, "gamma", usecondit = TRUE)
plot(fit2)
# }