subsetMarCadAIS {PAMscapes}

Subset Marine Cadastre AIS Data to Region

Description

Subsets the full download files from Marine Cadastre to a smaller region so that they are easier to work with

Usage

subsetMarCadAIS(
  inDir,
  outDir,
  latRange = c(20, 50),
  lonRange = c(-140, -110),
  name = "West_",
  overwrite = FALSE,
  progress = TRUE
)

Arguments

inDir

directory containing Marine Cadastre AIS CSV files to subset

outDir

directory to write subsetted files to

latRange

range of desired latitudes (decimal degrees)

lonRange

range of desired longitudes (decimal degrees)

name

prefix to append to new filenames

overwrite

logical flag to overwrite existing files

progress

logical flag to show progress bar

Value

invisibly return new file names

Author(s)

Taiki Sakai [e-mail]

Examples

outDir <- tempdir()
localFiles <- subsetMarCadAIS('AISData', outDir=outDir,
                              latRange=c(20, 50), lonRange=c(-140, -110),
                              name='West_')