pike65sg {mixdist} | R Documentation |
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.
data(pike65sg)
This data frame contains the following columns:
Macdonald, P.D.M. and T.J. Pitcher (1979). Age-groups from size-frequency data: a versatile and efficient method of analysing distribution mixtures. Journal of the Fisheries Research Board of Canada 36, 987-1001.
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
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)