prepare_polygons

Helper function to process data and prepare polygons using preexisting parallel lines.

internal

Specialized toolkit for processing biological and fisheries data from Peru's anchovy (Engraulis ringens) fishery. Provides functions to analyze fishing logbooks, calculate biological indicators (length-weight relationships, juvenile percentages), generate spatial fishing indicators, and visualize regulatory measures from Peru's Ministry of Production. Features automated data processing from multiple file formats, coordinate validation, spatial analysis of fishing zones, and tools for analyzing fishing closure announcements and regulatory compliance. Includes built-in datasets of Peruvian coastal coordinates and parallel lines for analyzing fishing activities within regulatory zones.

Hans Ttito

Tivy

Toolkit for Investigation and Visualization of Young Anchovies

prepare_polygons function

<dl><dt>data</dt>
<dd>Data frame with coordinates.</dd>
<dt>coastline</dt>
<dd>Data frame with coastline.</dd>
<dt>coast_parallels</dt>
<dd>List of data frames with lines parallel to the coast.</dd>
<dt>column_names</dt>
<dd>Vector with column names in coast_parallels data frames.</dd></dl>

Arguments

Prepare polygons from coordinate data — prepare_polygons

<dl>

<dt>data</dt>
<dd>Data frame with coordinates.</dd>


<dt>coastline</dt>
<dd>Data frame with coastline.</dd>


<dt>coast_parallels</dt>
<dd>List of data frames with lines parallel to the coast.</dd>


<dt>column_names</dt>
<dd>Vector with column names in coast_parallels data frames.</dd>

</dl>

prepare_polygons: Prepare polygons from coordinate data

Description

Usage

Value

Arguments