Preprocess Catch Data for Both Survey Versions — preprocess

Processes catch data from WorldFish surveys, handling both version 1 and version 2 survey structures. Automatically detects survey version and applies appropriate species field normalization and length group processing.

Usage

preprocess_catch(data = NULL, version = NULL)

Arguments

data: A data frame containing raw survey data with species groups
version: Character string specifying version ("v1" or "v2"). If NULL, version will be auto-detected based on column patterns.

Value

A data frame with processed catch data including: submission_id, n_catch, count_method, catch_taxon, n_buckets, weight_bucket, individuals, length

Details

The function uses reshape_catch_data_v2() internally which automatically handles:

Version 1: Single species field, nested length groups
Version 2: Multiple species fields (species_TL, species_RF, etc.), separate length group structure for fish >100cm