Extract Station Coordinates Robustly (internal) — smn_int_extract

Retrieves the metadata lines for a given station using the URL generated by smn_int_get_url(), searches for lines containing latitude/longitude/altitude labels (case-insensitive, ES/EN variants), and extracts the first numeric value from each line. If a coordinate cannot be extracted or fails range validation, NA is returned for that coordinate.

Usage

smn_int_extract_coordinates(
  station,
  max_attempts = 10,
  encoding = "UTF-8",
  add_meta_cols = FALSE
)

Arguments

station: Station code (character or numeric).
max_attempts: Integer. Maximum retries for the metadata download (default 10).
encoding: Character. Encoding for readLines() (default "UTF-8").
add_meta_cols: Logical. If TRUE, include station and source_url as explicit columns in the returned data (default FALSE). These are always attached as attributes for provenance.

Value

A one-row data.frame with columns latitude, longitude, altitude. Attributes station and source_url are attached.

Examples

NULL
#> NULL