make_length_classess: Put size classes on predator from observed length.

In MortenVinther/FishStomachs: Compilation of stomach contents data

Put size classes on predator from observed length.

Description

Define length classes for predator and preys.

Usage

make_length_classess(
  inp_dir = ".",
  inp_file = "length_classes_config.csv",
  max_l = 9999,
  write_output = TRUE,
  out_file = "length_classes.csv",
  minus_one = -1,
  same_no_all_data = FALSE
)

Arguments

inp_dir	Input directory for inn_file.
inp_file	File name with the configuration of length classes with the format as outlined above. The file must be a CSV file
max_l	Upper length in the last "largest" length class.
write_output	Flag for saving the length classes defined on out_file
out_file	Output file with defined length classes.
minus_one	Value to define upper length in length class, e.g. minus_one= -1 will provide length classes "050-059" and "060-69" for l 50, 60 and 70.
same_no_all_data	Logical, should all size classes have the same numbering irrespective of year and quarter?

Details

This function makes length classes defined from a lower and an upper value of length (or any other size measurement) The definition of length classes is given in an input file inp_file,

see this table

l	Species	y1	y2	q1	q2
50	ALL	1991	2013	1	4
60	ALL	1991	2013	1	4
70	ALL	1991	2013	1	4
80	ALL	1991	2013	1	4

where l is the length used to define length classes, e.g. the first two lines will produce the sizes "050-059" and "060-69". Species is the species name for the length classes. If Species=ALL, all the species will get the same lenngth classes y1 and y2 are the year range for which the length classes will be used. q1 and q2 are the year range for which the length classes will be used.

The defined length classes are made for all combinations of Species, y1 to y1, q1 to q2.

Value

defined length classes.

Examples

## Not run: ll<-make_length_classess(inp_dir=system.file('extdata', package = 'FishStomachs'),inp_file='length_classes_config.csv')

MortenVinther/FishStomachs documentation built on Feb. 14, 2025, 7:33 a.m.