CorrectTrans: Replace navigational transect (tran) with corrected transect...

In USFWS/AKaerial: Analysis of Alaska Region Aerial Survey Data

Replace navigational transect (tran) with corrected transect (ctran)

Description

CorrectTrans will cross-reference original navigational numbering of transects with corrected SplitDesign numbering

Usage

CorrectTrans(full.data, threshold = 0.5, split.design, area, strata.file)

Arguments

full.data	A clean (greenlight) file of observations
threshold	The distance in kilometers from a design file where observations are no longer counted. Defaults to 0.5 km.
split.design	SplitDesign output object of corrected transect lines
area	The area code for dedicated MBM Alaska region surveys. Acceptable values include: YKD - Yukon Kuskokwim Delta, ducks YKDV - Yukon Kuskokwim Delta, 2018 visibility study YKG - Yukon Kuskokwim Delta, geese KIG - Kigigak Island ACP - Arctic Coastal Plain CRD - Copper River Delta WBPHS - The North American Waterfowl Breeding Population Habitat Survey BLSC - 2018 Black Scoter Survey
strata.file	The path to the .shp file of the stratification

Details

CorrectTrans uses SplitDesign output to overwrite potentially incorrect navigational transect numbering with sample-appropriate numbering.

Value

original data frame (full.data) with ctran column added for corrected transect number

Author(s)

Charles Frost, [e-mail]

References

https://github.com/USFWS/AKaerial

USFWS/AKaerial documentation built on April 3, 2025, 4:06 p.m.