createEnvDataGrid: Create gridded data for querying Movebank Env-Data

In ABoVE-AotM/above: Functions and methods for the Animals on the Move project of the Arctic Boreal Vulnerability Experiment (ABoVE - NASA).

Description

Takes a vector of latitudes and longitudes (typically evenly spaced) and a vector of times and generates the strictly formatted data frame needed to upload to Env-Data to obtain covariates for movebank. Essentially, an R-based substitute for the "gridded data" tool.

Usage

createEnvDataGrid(
  lats,
  lons,
  start,
  finish = start,
  dt = 0,
  savefile = TRUE,
  fileout = NULL
)

Arguments

dt	time interval between desired time points.
savefile	whether to save a csv file
fileout	name of csv file to save
lats, lons	vectors of latitude and longitude for the desired grid. Can also be a single location.
start, finish	vectors of POSIX times of start and finish for the query.

Value

Either nothing (if csv file saved) or the character string data frame with correct formatting.

See Also

createEnvDataRequest, uploadEnvDataRequest, createEnvDataDataFrame

Examples

 lats <- seq(38.8, 39.0, length = 40)
 lons <- seq(-77.12, -76.91, length = 40) 
 start <- ymd("2014-01-01")
 finish <- ymd("2014-12-31")
 dt <- ddays(20)
 example <- createEnvDataGrid(lats, lons, start, finish, dt, savefile = FALSE)
 head(example)

ABoVE-AotM/above documentation built on May 28, 2020, 6:08 a.m.