Get GPS coordinates from ferrybox data based on timestamps

This function reads .txt files from a specified folder containing ferrybox data, filters them based on a specified ship name (default is "SveaFB" for R/V Svea), and extracts GPS coordinates for timestamps (nearest minute) falling within the date ranges defined in the file names.

ifcb_get_svea_position(timestamps, ferrybox_folder, ship = "SveaFB")

Arguments

timestamps

A vector of POSIXct timestamps for which GPS coordinates are to be retrieved.

ferrybox_folder

Path to the folder containing ferrybox .txt files.

ship

Name of the ship to filter ferrybox files (default is "SveaFB").

Value

A data frame containing the input timestamps and corresponding GPS coordinates. Columns include 'timestamp', 'gpsLatitude', and 'gpsLongitude'.

Examples

if (FALSE) {
ferrybox_folder <- "/path/to/ferrybox/data"
timestamps <- as.POSIXct(c("2016-08-10 10:47:34 UTC",
                           "2016-08-10 11:12:21 UTC",
                           "2016-08-10 11:35:59 UTC"))

result <- ifcb_get_svea_position(timestamps, ferrybox_folder)
print(result)
}