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Ages of Bluefish assigned from otoliths by two readers.

Source: R/BluefishAge.R
BluefishAge.Rd

Ages assigned to Bluefish (Pomatomus saltatrix) otoliths by two readers.

Format

A data frame with 445 observations on the following 2 variables.

r1

Ages assigned by the first reader

r2

Ages assigned by the second reader

Source

From Figure 2 in Chapter 3 (Bluefish) of the VMRC Final Report on Finfish Ageing, 2003 by the Center for Quantitative Fisheries Ecology at Old Dominion University. CSV file

Topic(s)

  • Age Comparison

  • Age Precision

  • Age Bias

  • Ageing Error

Examples

data(BluefishAge)
str(BluefishAge)
#> 'data.frame':	445 obs. of  2 variables:
#>  $ r1: int  0 0 0 0 0 0 0 0 0 0 ...
#>  $ r2: int  0 0 0 0 0 0 0 0 0 0 ...
head(BluefishAge)
#>   r1 r2
#> 1  0  0
#> 2  0  0
#> 3  0  0
#> 4  0  0
#> 5  0  0
#> 6  0  0
plot(r1~r2,data=BluefishAge)