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Summarise Layers and Geometry Types in a Spatial Data Source

Source: R/ngr_spk_layer_info.R
ngr_spk_layer_info.Rd

Extracts and summarises information about layers within a spatial vector data source. Attempts to determine the geometry type of each layer by querying a sample feature.

Usage

ngr_spk_layer_info(path)

Arguments

path

character A single string. Path to the vector spatial data source (e.g., a GeoPackage or shapefile).

Value

data.frame A data frame of available layers and their geometry types. If a layer contains no geometry, or an error occurs during reading, the geomtype will be NA.

Details

Uses sf::st_layers() to list available layers in the data source. For each layer, attempts to read a single feature using an SQL query and determines the geometry type using sf::st_geometry_type(). Layers with no geometry or errors in reading are safely assigned NA. The driver column is removed from the output as it may contain invalid entries for further data frame operations.

See also

sf::st_layers(), sf::st_read(), sf::st_geometry_type()

Other spacehakr: ngr_spk_ext_raster(), ngr_spk_gdalwarp(), ngr_spk_join(), ngr_spk_odm(), ngr_spk_poly_to_points(), ngr_spk_res()