## ----include = FALSE----------------------------------------------------------
knitr::opts_chunk$set(
  collapse = TRUE,
  comment = "#>",
  eval = FALSE
)

## ----setup--------------------------------------------------------------------
# library(Tivy)

## -----------------------------------------------------------------------------
# # Calculate juvenile percentages
# juvenile_results <- summarize_juveniles_by_group(
#   data = your_length_data,
#   group_cols = c("date", "fishing_zone"),
#   length_cols = c("8", "9", "10", "11", "12", "13"),
#   juvenile_limit = 12,  # Size threshold in cm
#   a = 0.0012,          # Length-weight coefficient
#   b = 3.1242           # Length-weight exponent
# )

## -----------------------------------------------------------------------------
# # Calculate fish weights from lengths
# weights <- calculate_fish_weight(
#   length = c(8, 10, 12, 14),
#   a = 0.0048,  # Coefficient for anchoveta
#   b = 3.067    # Exponent for anchoveta
# )
# 
# # Apply catch weighting to length frequencies
# weighted_data <- apply_catch_weighting(
#   data = your_data,
#   length_cols = c("8", "9", "10", "11", "12"),
#   catch_col = "total_catch",
#   a = 0.0048,
#   b = 3.067
# )

## -----------------------------------------------------------------------------
# # Single sample calculation
# juv_percent <- calculate_juvenile_percentage(
#   frequency = c(10, 25, 40, 30, 15),  # Frequencies by length
#   length = c(8, 9, 10, 11, 12),       # Length classes
#   juvenile_limit = 10                  # Juvenile threshold
# )
# 
# # Get length ranges from frequency data
# min_length <- get_length_range(
#   frequency = c(0, 5, 10, 20, 15, 0),
#   length = c(8, 9, 10, 11, 12, 13),
#   type = "min"
# )

## -----------------------------------------------------------------------------
# # Convert frequency data to weight
# weight_data <- convert_numbers_to_weight(
#   data = your_frequency_data,
#   length_cols = c("8", "9", "10", "11", "12"),
#   a = 0.0012,
#   b = 3.1242
# )

## -----------------------------------------------------------------------------
# # Plot juvenile analysis
# juvenile_plot <- plot_juvenile_analysis(
#   data = your_data,
#   x_var = "date",
#   length_cols = c("8", "9", "10", "11", "12"),
#   plot_type = "bars",
#   title = "Juvenile Analysis Over Time"
# )
# 
# # Create comprehensive dashboard
# dashboard <- create_fishery_dashboard(
#   data = complete_data,
#   date_col = "date",
#   length_cols = find_columns_by_pattern(complete_data, "^[0-9]")
# )

## -----------------------------------------------------------------------------
# # Use parallel processing for catch weighting
# weighted_data <- apply_catch_weighting(
#   data = large_dataset,
#   length_cols = length_columns,
#   catch_col = "catch",
#   a = 0.0048,
#   b = 3.067,
#   parallel = TRUE,
#   num_cores = 4
# )