Ages assigned at two different times by Reader A to the otoliths of Jackass Morwong (Nemadactylus macropterus).
Format
A data frame with 217 paired observations on the following 2 variables.
- first
Ages assigned on the first reading
- second
Ages assigned on the second reading
Source
From Table 5 of Restall, J.E., and K. Krusic-Golub. 2004. Development of jackass morwong age-length keys for 2000-2002. Final report to Australian Fisheries Management Authority. 13 pp. Primary Industries Research Victoria, Queenscliff. CSV file
Examples
data(Morwong1)
str(Morwong1)
#> 'data.frame': 217 obs. of 2 variables:
#> $ first : int 2 3 3 3 3 3 3 3 3 3 ...
#> $ second: int 3 3 3 3 3 3 3 3 3 4 ...
head(Morwong1)
#> first second
#> 1 2 3
#> 2 3 3
#> 3 3 3
#> 4 3 3
#> 5 3 3
#> 6 3 3
plot(second~first,data=Morwong1)
xtabs(~first+second,data=Morwong1)
#> second
#> first 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 25 30
#> 2 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
#> 3 8 5 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
#> 4 3 24 5 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
#> 5 0 4 14 4 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
#> 6 0 0 4 11 9 5 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
#> 7 0 0 0 5 22 10 3 2 0 0 0 0 0 0 0 0 0 0 0 0 0
#> 8 0 0 0 0 4 5 5 1 0 0 0 0 0 0 0 0 0 0 0 0 0
#> 9 0 0 0 0 0 3 7 2 0 0 0 0 0 0 0 0 0 0 0 0 0
#> 10 0 0 0 0 0 0 1 8 3 1 0 0 0 0 0 0 0 0 0 0 0
#> 11 0 0 0 0 0 1 0 0 4 3 0 0 0 0 0 0 0 0 0 0 0
#> 12 0 0 0 0 0 0 0 0 1 0 3 0 0 0 0 0 0 0 0 0 0
#> 13 0 0 0 0 0 0 0 0 0 0 2 0 0 1 0 0 0 0 0 0 0
#> 14 0 0 0 0 0 0 0 0 0 0 0 3 0 0 0 0 0 0 0 0 0
#> 15 0 0 0 0 0 0 0 0 0 0 0 1 1 2 0 0 0 0 0 0 0
#> 16 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 0 0 0 0
#> 17 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 0 0 0 0
#> 18 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 1 0 0
#> 19 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0
#> 20 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 0
#> 22 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0
#> 24 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0
#> 28 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0
#> 30 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1