weathercan (version 0.6.2)

stations_search: Search for stations by name or location

Description

Returns stations that match the name provided OR which are within dist km of the location provided. This is designed to provide the user with information with which to decide which station to then get weather data from.

Usage

stations_search(
  name = NULL,
  coords = NULL,
  dist = 10,
  interval = c("hour", "day", "month"),
  normals_years = NULL,
  normals_only = NULL,
  stn = NULL,
  starts_latest = NULL,
  ends_earliest = NULL,
  verbose = FALSE,
  quiet = FALSE
)

Arguments

name

Character. A vector of length 1 or more with text against which to match. Will match station names that contain all components of name, but they can be in different orders and separated by other text.

coords

Numeric. A vector of length 2 with latitude and longitude of a place to match against. Overrides lat and lon if also provided.

dist

Numeric. Match all stations within this many kilometres of the coords.

interval

Character. Return only stations with data at these intervals. Must be any of "hour", "day", "month".

normals_years

Character. One of NULL (default), current, 1981-2010, or 1971-2000. current returns only stations from most recent normals year range. Default NULL does not filter by climate normals. Specific year ranges return stations with normals in that period. See Details for more specifics.

normals_only

DEPRECATED. Logical. Return only stations with climate normals?

stn

DEFUNCT. Now use stations_dl() to update internal data and stations_meta() to check the date it was last updated.

starts_latest

Numeric. Restrict results to stations with data collection beginning in or before the specified year.

ends_earliest

Numeric. Restrict results to stations with data collection ending in or after the specified year.

verbose

Logical. Include progress messages

quiet

Logical. Suppress all messages (including messages regarding missing data, etc.)

Value

Returns a subset of the stations data frame which match the search parameters. If the search was by location, an extra column 'distance' shows the distance in kilometres from the location to the station. If no stations are found withing dist, the closest 10 stations are returned.

Details

To search by coordinates, users must make sure they have the sp package installed.

The current, most recent, climate normals year range is 1981-2010.

Examples

# NOT RUN {
stations_search(name = "Kamloops")
stations_search(name = "Kamloops", interval = "hour")

stations_search(name = "Ottawa", starts_latest = 1950, ends_earliest = 2010)

stations_search(name = "Ottawa", normals_years = "current")   # 1981-2010
stations_search(name = "Ottawa", normals_years = "1981-2010") # Same as above
stations_search(name = "Ottawa", normals_years = "1971-2000") # 1971-2010

if(requireNamespace("sp")) {
  stations_search(coords = c(53.915495, -122.739379))
}
# }