Fetch WaPOR Metadata from JSON Cache Files — wapor_fetch

Reads pre-built metadata JSON files bundled with the package and returns a data.frame describing WaPOR Level 1, 2, or 3 datasets.

Usage

wapor_fetch_metadata(level)

Arguments

level: Character. One of "L1", "L2", "L3", or "all". When "all" is supplied, all three levels are read and row-bound.

Value

A data.frame with columns:

code: Character. Dataset code (e.g., "L1-AETI-D").
long_name: Character. Descriptive name.
units: Character. Physical units.
scale: Numeric. Scale factor.
temporal_resolution: Character. Temporal resolution code.
spatial_extent: List column. Named list with xmin, xmax, ymin, ymax, or NULL when not available.
level: Character. Level identifier ("L1", "L2", or "L3").

Details

JSON files are resolved at runtime from a writable user cache first and fall back to the installed package metadata bundled under inst/metadata/. Call wapor_update_metadata() to refresh the user cache from the live API.

Examples

if (FALSE) { # \dontrun{
# Fetch all L1 datasets
meta <- wapor_fetch_metadata("L1")
head(meta)

# Fetch everything at once
all_meta <- wapor_fetch_metadata("all")
} # }