DepthETOPO: DepthETOPO Compute the depth from ETOPO1 is at 1 arc minute...

In abfleishman/trakR: Basic Animal Tracking Data Analysis Tools

DepthETOPO Compute the depth from ETOPO1 is at 1 arc minute resolution.

Description

Extract sea floor depth at each point along a track. Relies on 'marmap::getNOAA.bathy' which queries the ETOPO1 database hosted on the NOAA website, given the coordinates of the area of interest and desired resolution. Then extracts the values at each point along the track.

Usage

DepthETOPO(
  tracks,
  dataLat = "Latitude",
  dataLon = "Longitude",
  left = -179,
  right = -164,
  top = 60,
  bottom = 50,
  resolution = 30,
  keep = F
)

Arguments

tracks	data.frame of data to be queried for latand long values
dataLat	quoted name of column in data that has latitude values
dataLon	quoted name of column in data that has longitude values
left	The left side of the bounding box of data
right	The right side of the bounding box of data
top	The top side of the bounding box of data
bottom	The bottom side of the bounding box of data
resolution	arc minutes res
keep	save a file

Value

A vector of elevation/depth in meters from ETOPO1 world bathymatry at a resolution of 1 arc minute needs to add :importFrom SDMTools extract.data asc.from.sp

Author(s)

Abram B. Fleishman [e-mail]

References

Amante, C. and B. W. Eakins, ETOPO1 1 Arc-Minute Global Relief Model: Procedures, Data Sources and Analysis. NOAA Technical Memorandum NESDIS NGDC-24, 19 pp, March 2009. http://www.ngdc.noaa.gov/mgg/global/relief/ETOPO1/docs/ETOPO1.pdf

abfleishman/trakR documentation built on Nov. 21, 2022, 7:59 a.m.