User guide

The pages in this section demonstrate how to use Echopop functions to string together a workflow to infer biomass and other population variables using the combination of acoustic and biological data.

It is often helpful to assign a DATA_ROOT directory path as a shortcut for writing the full filepaths of target datasets, as shown in the example. However, this depends on how the different input files are organized.

from pathlib import Path

DATA_ROOT = Path("C:/Data/")

Function arguments

Use the help() function or hover tooltips in certain IDEs (e.g. VSCode) to investigate the arguments and scope of each function.

The workflows have been broken up into the following sections:

• Overview

• Differences between the EchoPro and Echopop

• Ingest NASC datasets

• Biological data ingestion

• Stratify acoustic and biological data

• Compute age- and length-binned number proportions

• Compute age- and length-binned weight proportions

• Estimate abundance and biomass from backscatter

• Geostatistics

• Apportion kriged biomass, abundance, and NASC

• Stratified resampling

• Plot results

• Generate reports

• Compare EchoPro and Echopop reports

• Custom workflows