SplitDesign: Renumber design transects based on stratification

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

Renumber design transects based on stratification

Description

SplitDesign will read transect and stratification layers and number transects based on polygon arrangement in the stratification file

Usage

SplitDesign(strata.file, transect.file, SegCheck = FALSE, area = "other")

Arguments

strata.file	The location of the analysis stratification .shp file
transect.file	The location of the design transect .shp file (currently only supports east-west transects)
SegCheck	Should a map be drawn to verify the process? TRUE/FALSE
area	If area=="CRD" a specific fix is made to EggIsland north/south transects. Otherwise area does not matter.

Details

SplitDesign is a critically important function to aerial survey analysis. It will read in design transect and design stratifcation and combine the polygons and lines to renumber the design file appropriately. It will catch errors such as slight overhang in design transects and strata, incorrect numbering scheme for a given sample, and incorrectly attributed strata to lines.

Value

spatial lines object with appropriate numbering (retains old numbering)

Author(s)

Charles Frost, [e-mail]

References

https://github.com/USFWS/AKaerial

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