View source: R/adfg.ScaleInputSSs.R
adfg.ScaleInputSSs | R Documentation |
Function to calculate the "input" sample sizes to TCSAM02 for ADFG size composition data.
adfg.ScaleInputSSs(dfrSS, .ss_scl, .ss_max = 200)
dfrSS |
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.ss_scl |
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.ss_max |
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The scale factor ss_scl
and max input sample size ss_max
are
used to determine input annual sample sizes for size composition data using the formula
inp_ss = min(max_ss,max_ss\*(ss_tot/ss_scl)\*(ss/ss_tot)
where ss
is the original sample size (the total number of crab measured) by factor
combination and ss_tot
is the total sample size by year.
dataframe or tibble with the same column order as the input, but with
additional columns ss_orig
, ss_tot
, and ss_scl
. Column ss
contains the scaled
sample sizes, column ss_scl
contains the scale used to convert the original
sample sizes, and column ss_orig
contains the original sample sizes.
dfrSS
should have (at least) the columns
year
ss
dfrSS
should include sample sizes for only a single fishery or survey.
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