Learn R Programming

Tivy

Toolkit for Investigation and Visualization of Young Anchovies

Tivy is an R package specialized in processing and analyzing fisheries data from Peru's anchovy (Engraulis ringens) fishery. It facilitates the handling of information from fishing trip logbooks, size records, hauls, and official announcements issued for preventive closures.

Copy Link

Version

Install

install.packages('Tivy')

Version

0.1.1

License

MIT + file LICENSE

Issues

Pull Requests

Stars

Forks

Repository

https://github.com/HansTtito/Tivy

Maintainer

Hans Ttito

Last Published

July 23rd, 2025

Functions in Tivy (0.1.1)

generate_download_url

Generate download URL

calculate_euclidean_distance

Calculate Euclidean distance

Vectorized distance to coast

plot_fishing_zones

Plot fishing zones

merge_length_fishing_trips_hauls

Merge fishing trips, length and hauls data

Convert latitude or longitude to decimal degrees

plot_juvenile_analysis

Plot juvenile analysis

Process fishing haul data from PRODUCE sitrapesca files

faenas_bitacora

peru_coast_parallels

Lines parallel to the Peruvian coast

process_json_response

Process JSON response

generate_robust_colors

Generate robust color palette for any number of groups

validate_length_data

Validate processed length data quality

fetch_fishing_announcements

Fetch fishing announcements from external sources

extract_numeric_values

Extract length values from column names

extract_cookies

Extract cookies

fetch_announcements_batch

Fetch announcements batch

create_download_dir

Create download directory

plot_zones_static

Generate static plot of polygons on a map

plot_zones_interactive

Generate interactive plot of polygons with leaflet

validate_polygon_data

Validate data for polygon creation

customize_juvenile_axes

Helper function to customize axes in juvenile plots

convert_to_date

Convert dates to standard format

convert_numbers_to_weight

Convert numbers to weight

extract_pdf_data

Extract data from PDF announcements

create_fishery_dashboard

Create fishery dashboard

extract_points_between_latitudes

Extract points between latitudes

Find column by pattern matching

find_columns_by_pattern

Find columns by pattern

get_length_range

Get length range from frequencies

summarize_juveniles_by_group

Summarize juveniles by group

tallas_bitacora

Length data sampled from hauls made by vessels in the Peruvian sea.

process_fishing_trips

Process fishing trip data from PRODUCE sitrapesca files

prepare_polygons

Prepare polygons from coordinate data

Process length data from hauls

format_extracted_data

Format extracted announcement data

make_api_request

Make API request

validate_fishing_trip_data

Validate processed fishing trip data quality

validate_haul_data

Validate processed haul data quality

process_pdf_text

Process PDF text content

find_parallel_line

Find parallel line by distance

weight_by_catch

Weight length frequencies by total catch

process_weighting_block

Process weighting block

Peruvian coastline

interpolate_point

Interpolate point on line

safe_numeric_conversion

Safe numeric conversion

peru_isoparalitoral_areas

Isoparalittoral areas

is_date_in_range

Check date range

add_juvenile_reference_line

Helper function to add reference line to juvenile plots

apply_catch_weighting

Apply catch weighting to data frame

Add variables for juveniles, sample length, distance to coast, and distance category

calculate_distances_vectorized

Calculate vectorized distances to coastline

calculate_juvenile_percentage

Calculate juvenile percentage

calculate_fish_weight

Calculate fish weight from length

calculate_juvenile_statistics

Calculate juvenile statistics for a group

calculate_haversine_distance_wgs84

Calculate distance using Haversine formula

apply_juvenile_theme

Helper function to apply theme to juvenile plots

calculate_coast_longitude

Calculate coast longitude

add_juvenile_geoms

Helper function to add geoms to juvenile plots

Tivy: Toolkit for Investigation and Visualization of Young Anchovies

add_juvenile_faceting

Helper function to add faceting to juvenile plots

create_juvenile_base_plot

Helper function to create base plot for juvenile analysis

calculate_manhattan_distance

Calculate Manhattan distance between coordinates

calculate_grid_distance

Calculate grid distance

check_required_packages

Check required packages

build_request_params

Build request parameters