Package index • survdat

Estimation

Main functions for estimating swept area biomass and stratified mean

calc_swept_area(): Calculate swept area biomass

calc_stratified_mean(): Calculate stratified mean

get_area(): Generate a table of stratum areas

Get Data

Functions that pull data from the SVDBS database

get_survdat_data(): Extracts Survey data from Database

get_mass_inshore_survey_data(): Extracts Massachusetts inshore bottom trawl survey data

get_survdat_clam_data(): Extracts Clam data from Survey Database

get_survdat_scallop_data(): Extracts Scallop Survey data from Database

get_length_weight_data(): Extract Length and weight data from SVDBS

Helper Functions

Functions that pull supporting information from the SVDBS database

get_cruise_purpose(): Extract CRUISE PURPOSE information from SVDBS

get_maturity(): Extract MATURITY information from SVDBS

get_species(): Extract SPECIES information from SVDBS

get_species_stock_area(): Extract Survey strata that comprise species stock definition

get_strata(): Extract STRATA information from SVDBS

get_sex(): Extract SEX information from SVDBS

get_sex_fscs(): Extract SEX information from SVDBS

get_vessel(): Extract VESSEL information from SVDBS

get_conversion_factors(): Extract CONVERSION FACTORS from SVDBS

get_length_weight(): Extract species specific LENGTH-WEIGHT COEFFICIENTS from SVDBS

Sample Data

Random sample of data from different types of data pulls

sampleBio: Sample data pull with spcies specific biological data

sampleLengthWeight: Sample data pull with species lengths and predicted weights

sampleLengths: Sample data pull with species lengths

sampleRaw: Sample raw data pull

sampleRawWithConversion: Sample raw data pull with conversion factors applied

Plotting

Basic plotting functions to visualize data

plot_data_area(): Plots survey data and shapefile

plot_shapefile(): Plots shapefile

Package Info

survdat survdat-package: survdat: Pull and process Survey data