download_daymet_batch: This function downloads 'Daymet' data for several single...

In daymetr: Interface to the 'Daymet' Web Services

This function downloads 'Daymet' data for several single pixel location, as specified by a batch file.

Description

This function downloads 'Daymet' data for several single pixel location, as specified by a batch file.

Usage

download_daymet_batch(
  file_location = NULL,
  start = 1980,
  end = as.numeric(format(Sys.time(), "%Y")) - 1,
  internal = TRUE,
  force = FALSE,
  silent = FALSE,
  path = tempdir(),
  simplify = FALSE
)

Arguments

file_location	file with several site locations and coordinates in a comma delimited format: site, latitude, longitude
start	start of the range of years over which to download data
end	end of the range of years over which to download data
internal	assign or FALSE, load data into workspace or save to disc
force	TRUE or FALSE (default), override the conservative end year setting
silent	suppress the verbose output (default = FALSE)
path	set path where to save the data if internal = FALSE (default = tempdir())
simplify	output data to a tibble, logical FALSE or TRUE (default = TRUE)

Value

Daymet data for point locations as a nested list or data written to csv files

Examples

## Not run: 
# The download_daymet_batch() routine is a wrapper around
# the download_daymet() function. It queries a file with
# coordinates to easily download a large batch of daymet
# pixel locations. When internal = TRUE, the data is stored
# in a structured list in an R variable. If FALSE, the data
# is written to disk.

# create demo locations (two sites)
locations <- data.frame(site = c("site1", "site2"),
                      lat = rep(36.0133, 2),
                      lon = rep(-84.2625, 2))

# write data to csv file
write.table(locations, paste0(tempdir(),"/locations.csv"),
           sep = ",",
           col.names = TRUE,
           row.names = FALSE,
           quote = FALSE)

# download data, will return nested list of daymet data
df_batch <- download_daymet_batch(file_location = paste0(tempdir(),
                                                        "/locations.csv"),
                                    start = 1980,
                                    end = 1980,
                                    internal = TRUE,
                                    silent = TRUE)

# For other practical examples consult the included
# vignette. 

## End(Not run)

daymetr documentation built on Sept. 15, 2023, 5:07 p.m.