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Get Length-Weight and Morphological Parameters for Species (Batch Version)

get_length_weight_batch.Rd

Retrieves length-weight relationship parameters and optional morphological data for multiple species efficiently by processing them in batches. Handles both fish and non-fish species appropriately.

Usage

get_length_weight_batch(species_areas_filtered, include_morphology = FALSE)

Arguments

species_areas_filtered

Data frame with filtered species

include_morphology

Logical, whether to include morphological data (Length, CommonLength, Weight). Default is FALSE.

Value

If include_morphology is FALSE (default), a data frame with columns:

  • a3_code: FAO 3-alpha code

  • species: Scientific name

  • area_code: FAO area code

  • database: Source database

  • type: Measurement type (e.g., "TL" for total length)

  • a: Length-weight parameter a

  • b: Length-weight parameter b

If include_morphology is TRUE, a list with two elements:

  • length_weight: Data frame as described above

  • morphology: Data frame with columns:

    • a3_code: FAO 3-alpha code

    • species: Scientific name

    • area_code: FAO area code

    • database: Source database

    • Length: Maximum recorded length

    • CommonLength: Common length

    • Weight: Maximum weight

Note

  • For FishBase species, only total length (TL) measurements are used

  • Questionable estimates (EsQ = "yes") are excluded

Examples

if (FALSE) { # \dontrun{
# Get just length-weight parameters
lw_data <- get_length_weight_batch(species_areas_filtered)

# Get both length-weight and morphological data
results <- get_length_weight_batch(species_areas_filtered, include_morphology = TRUE)
lw_data <- results$length_weight
morph_data <- results$morphology
} # }