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Hypothetical weight-length data for testing PSD and relative weight functions

Source: R/PSDWRtest.R
PSDWRtest.Rd

Hypothetical weight-length and associated data. These data are useful for testing PSD and relative weight functions (e.g., psdAdd and wrAdd).

Format

A data frame of many observations on the following 5 variables:

species

Species name

location

Broad location of capture

len

Length in mm

wt

Weight in g

sex

Sex as F for female, M for male, or U or NA for unknown or unrecorded

Topic(s)

  • Size structure

  • Proportional size structure

  • Relative stock density

  • Proportional stock density

  • Relative weight

  • Standard weight

  • Condition

See also

psdAdd, psdCalc, and wrAdd

Examples

str(PSDWRtest)
#> 'data.frame':	1016 obs. of  5 variables:
#>  $ species : chr  "Bluegill Sunfish" "Bluegill Sunfish" "Bluegill Sunfish" "Bluegill Sunfish" ...
#>  $ location: chr  "Bass Lake" "Bass Lake" "Bass Lake" "Bass Lake" ...
#>  $ len     : num  107 88 102 94 104 100 91 97 101 115 ...
#>  $ wt      : num  25.8 13.1 18.3 15.6 21.9 20.5 13.4 16.2 15.9 23.2 ...
#>  $ sex     : chr  NA NA NA NA ...
peek(PSDWRtest,n=20)
#>               species     location  len      wt  sex
#> 1    Bluegill Sunfish    Bass Lake  107    25.8 <NA>
#> 53   Bluegill Sunfish    Bass Lake  116    34.8 <NA>
#> 107  Bluegill Sunfish    Bass Lake  191   138.3 <NA>
#> 160       Brook Trout   Trout Lake  291      NA <NA>
#> 214       Brown Trout   Trout Lake  151    45.4 <NA>
#> 267       Brown Trout   Trout Lake  190    86.3 <NA>
#> 321       Brown Trout Brushy Creek  318   198.4    M
#> 374       Brown Trout Brushy Creek  446   533.4    F
#> 428   Largemouth Bass    Bass Lake  199    70.1 <NA>
#> 481   Largemouth Bass    Bass Lake  306   311.9 <NA>
#> 535   Lean Lake Trout   Trout Lake  529  1480.0    F
#> 588   Lean Lake Trout   Trout Lake  809  5448.1    F
#> 642       Muskellunge    Long Lake 1097 11376.4    U
#> 695           Walleye    Bass Lake   72     3.5 <NA>
#> 749           Walleye    Bass Lake  307   273.6    M
#> 802           Walleye    Bass Lake  345   429.8    F
#> 856      Yellow Perch    Bass Lake  165    59.4    F
#> 909      Yellow Perch    Bass Lake  150    40.2    F
#> 963      Yellow Perch    Bass Lake  241   187.9    F
#> 1016     Yellow Perch    Bass Lake  322   520.0    F
unique(PSDWRtest$species)
#>  [1] "Bluegill Sunfish" "Brook Trout"      "Brown Trout"      "Iowa Darter"     
#>  [5] "Largemouth Bass"  "Lean Lake Trout"  "Muskellunge"      "Ruffe"           
#>  [9] "Walleye"          "Yellow Perch"