remove_unknown_lengths: Remove unknown fish lengths

In Delta-Stewardship-Council/deltafish: Accesses an Integrated Fish Count and Length Dataset from the San Francisco Delta

Remove unknown fish lengths

Description

Removes unknown fish lengths. Returns a DBI table.

Usage

remove_unknown_lengths(data, univariate)

Arguments

data

A DBI table that can be treated like a data.frame, with fish data. See open_fish()

univariate

(logical) Will these data be used for univariate analyses (univariate=TRUE)? Or multi-species analyses (univariate=FALSE)? If univariate, when a Length_NA_flag=="Unknown length" record is found, all records of that taxa from that sample are removed. In effect, this is transforming those records into missing data. If univariate=FALSE, when a Length_NA_flag=="Unknown length" record is found, the entire sample is removed and no 0s are filled in, since accurate community data cannot be confirmed for that sample.

Value

data_known A DBI table with only known lengths

Delta-Stewardship-Council/deltafish documentation built on July 31, 2024, 3:32 p.m.