Expand a PhenoCam time series from 3-day to a 1-day time step

Necessary step to guarantee consistent data processing between 1 and 3-day data products. Should rarely be used independent of `download_phenocam()`.

expand_phenocam(data, truncate = NULL, internal = TRUE, out_dir = tempdir())

Arguments

data

a PhenoCam file

truncate

year (numerical), limit the time series to a particular year (default = NULL)

internal

return a data structure if given a file on disk (TRUE / FALSE = default)

out_dir

output directory where to store data (default = tempdir())

Value

Expanded PhenoCam data structure or file, including 90 day padding if requested.

Examples

if (FALSE) {
# download demo data
download_phenocam(site = "harvard$",
                  veg_type = "DB",
                  roi_id = "1000",
                  frequency = "3")

# Overwrites the original file, increasing
# it's file size.
expand_phenocam(file.path(tempdir(),"harvard_DB_1000_3day.csv"))

# Contracts the file to it's original size, skipping
# two days.
contract_phenocam(file.path(tempdir(),"harvard_DB_1000_3day.csv"))
}