Extract station matrix from SQLite3 database
Arguments
- bikedb
A string containing the path to the SQLite3 database. If no directory specified, it is presumed to be in
tempdir().- city
Optional city (or vector of cities) for which stations are to be extracted
Examples
if (FALSE) { # \dontrun{
data_dir <- tempdir ()
bike_write_test_data (data_dir = data_dir)
# or download some real data!
# dl_bikedata (city = 'la', data_dir = data_dir)
bikedb <- file.path (data_dir, 'testdb')
store_bikedata (data_dir = data_dir, bikedb = bikedb)
# create database indexes for quicker access:
index_bikedata_db (bikedb = bikedb)
stations <- bike_stations (bikedb)
head (stations)
bike_rm_test_data (data_dir = data_dir)
bike_rm_db (bikedb)
# don't forget to remove real data!
# file.remove (list.files (data_dir, pattern = '.zip'))
} # }