This function replaces the robustification value for length composition data
.dat file that was read in using
with those specified in
lcomp_constant. It then writes a new file with name
into the working directory. If used with
run_ss3sim the case
file should be named
lcomp_constant. A suggested case letter is
*The new value to be used. Must be a numeric value, as a proportion. For example 0.1 means 10 percent. See the SS3 manual for further information. A NULL value indicates no action resulting in using the current value, and a value of 0 will throw an error since that leads to an error when zeroes exist in the data. Instead use a very small value like 1e-07.
An SS data list object as read in from
A string providing the path to the output SS3
Should the data file be written to disk?
The robustification constant is added to both the observed and expected proportions of length composition data, before being normalized internally. It is designed to help stabilize the model, but is unclear how and when to use it for optimal effect. The same value is used for all length data.
A modified SS3
.dat file, and that file returned invisibly
(for testing) as a vector of character lines.
All function argument descriptions that start with an asterisk (*) will be passed
through the case files to
run_ss3sim. If one of these arguments
is not specified in a case file, then a value of
NULL will be passed,
which may or may not be an appropriate value. Other arguments will be ignored