Convert the GPS, TCX data to a LINESTRING
gps_lat_lon_to_LINESTRING(
dat_gps_tcx,
CRS = 4326,
verbose = FALSE,
time_split_asc_desc = NULL
)
this parameter corresponds to the output data.table of the 'GPS_TCX_data()' function
an integer specifying the Coordinates Reference System. The recommended value for this data is 4326 (which is also the default value)
a boolean. If TRUE then information will be printed out in the console
if NULL then the maximum altitude coordinates point will be used as a split point of the route, otherwise the user can give a lubridate 'hours-minutes-seconds' object such as: lubridate::hms('17:05:00')
an object of class list
Separate the Ascending and Descending coordinate points into 2 groups and give a different color to the Ascending and Descending routes
if (FALSE) {
require(fitbitViz)
#............................
# first extract the log-id(s)
#............................
USER_ID = '99xxxx'
token = 'my_long_web_api_token'
log_id = extract_LOG_ID(user_id = USER_ID,
token = token,
after_Date = '2021-03-13',
limit = 10,
sort = 'asc',
verbose = TRUE)
str(log_id)
#...................................
# then return the gps-ctx data.table
#...................................
res_tcx = GPS_TCX_data(log_id = log_id,
user_id = USER_ID,
token = token,
time_zone = 'Europe/Athens',
verbose = TRUE)
str(res_tcx)
#..................................................................
# By using using the maximum altitude as a split point of the route
#..................................................................
linestring_dat_init = gps_lat_lon_to_LINESTRING(dat_gps_tcx = res_tcx,
CRS = 4326,
time_split_asc_desc = NULL,
verbose = TRUE)
#.................................................................
# By using a customized split of the route (ascending, descending)
#.................................................................
linestring_dat_lubr = gps_lat_lon_to_LINESTRING(dat_gps_tcx = res_tcx,
CRS = 4326,
time_split_asc_desc = lubridate::hms('17:05:00'),
verbose = TRUE)
}