Retrieve a set of time series and puts it in a "sits tibble". Sits tibbles are the main structures of sits package. They contain both the satellite image time series and their metadata. A sits tibble is a tibble with pre-defined columns that has the metadata and data for each time series. The columns are <longitude, latitude, start_date, end_date, label, cube, time_series>. There are many ways of retrieving time series:
WTSS: Retrieve data from Web Time Series Service (WTSS)
using a lat/long point (sits_get_data.wtss_cube
),
a CSV file (sits_get_data.csv_wtss_cube
)
or a SHP file (sits_get_data.shp_wtss_cube
)
SATVEG: Retrieve data from SATVEG service using a lat/long point
(sits_get_data.satveg_cube
),
a CSV file (sits_get_data.csv_satveg_cube
)
or a SHP file (sits_get_data.shp_satveg_cube
)
RASTER: Retrieve data from a RASTER cube using a lat/long point
(sits_get_data.raster_cube
),
a CSV file (sits_get_data.csv_raster_cube
)
or a SHP file (sits_get_data.shp_raster_cube
)
The URL and other parameters for accessing the time series services
are defined in the package configuration file. This file is "config.yml".
Please see the sits_config
for more information.
Before using this service, the user should create a valid description
of a data cube using the sits_cube
function.
sits_get_data(cube, file = NULL, ...)
Data cube from where data is to be retrieved.
File with information on the data to be retrieved.
Other parameters to be passed for specific types.
A tibble with the metadata and data for each time series <longitude, latitude, start_date, end_date, label, cube, time_series>.
Lubia Vinhas, Gilberto Queiroz, Karine Ferreira, Gilberto Camara, Web Services for Big Earth Observation Data. In: XVII Brazilian Symposium on Geoinformatics, 2016, Campos do Jordao. Proceedings of GeoInfo 2016. Sao Jose dos Campos: INPE/SBC, 2016. p.166-177.