Skip to contents

Preprocess Catch Data from Survey Forms

preprocess_catch.Rd

Processes catch data from KoBoToolbox survey forms, handling different field structures that result from various survey form configurations. Automatically normalizes species field variations and processes length group data.

Usage

preprocess_catch(data = NULL)

Arguments

data

A data frame containing raw survey data with species groups

Value

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

Details

The function uses reshape_catch_data() internally which automatically handles:

  • Multiple species field formats (species_TL, species_RF, species_SH, etc.)

  • Regular length group data for fish under 100cm (e.g., 5_10, 10_15, etc.)

  • Separate length group structures for fish over 100cm

  • Length range conversion to midpoint values

  • Species code standardization (e.g., TUN→TUS, SKH→CVX)