Package index

Hydrofabric I/O

Read and write hydrofabric layers from GeoPackages, and lazily query any GDAL/OGR vector source with dplyr.

read_hydrofabric()

Read Hydrofabric Layers from a GeoPackage (or accept in-memory `sf` objects)

write_hydrofabric()

Write a hydrofabric GeoPackage (mixed sf + non-sf)

as_ogr()

Delayed read for vector resources

layer_exists()

Check if a layer exists in a geopackage

OGRSQL()

OGRSQL OGRSQL driver, use to [dbConnect()] to a data source readable by sf

Cloud & GeoParquet

Authenticated cloud access and GeoParquet/Arrow round-trips for sf objects.

lynker_spatial_auth()

Authenticate with Lynker Spatial

lynker_spatial_token()

Get an OAuth2 token for Lynker Spatial

lynker_spatial_refresh()

Refresh an existing Lynker Spatial token

duckdb_connection()

Create a new DuckDB connection

tbl_http()

Read DuckDB File(s) over HTTP

st_read_parquet()

Read a Parquet file to sf object

st_write_parquet()

Write sf object to Parquet file

read_sf_dataset()

Read Parquet Dataset

write_sf_dataset()

Write Parquet Dataset

Geometry cleaning

Repair and simplify DEM-derived catchment geometry, and fast unions by ID.

clean_geometry()

Clean Catchment Geometry

clean_gpkg_layer()

Clean polygon topology in a GeoPackage layer using GDAL and Mapshaper

union_polygons()

Fast polygon union by ID

union_linestrings()

Fast linestring union by ID

flowpaths_to_linestrings()

Convert MULTILINESTRINGS to LINESTRINGS

Network & topology

Algorithms over the directed (DAG) flow network.

accumulate_downstream()

Accumulate an attribute downstream over a directed acyclic network

get_hydroseq()

Compute and add the hydrosequence to a directed acyclic network

get_streamorder()

Compute and add Strahler stream order to a directed acyclic network

add_measures()

Add length and area measures to flowpaths/divides

add_areasqkm()

Compute area in square kilometers (numeric)

add_lengthkm()

Compute length in kilometers (numeric)

get_node()

Get endpoint or startpoint of LINESTRING

node_geometry()

Node geometry from line endpoints

rename_geometry()

Rename geometry column of sf object

Versioning & quality assurance

Stamp dataset versions and provenance into GeoPackages, and run staged pipeline invariant checks shared across the stack.

gpkg_set_version()

Stamp a dataset version into a GeoPackage's metadata tables

gpkg_get_version()

Read the dataset version written by [gpkg_set_version()]

hf_check_invariants()

Pipeline invariant checks

hf_check_merge_invariants()

Global-merge (Stage 4) conservation + completeness invariants

hf_check_attr_bounds()

Check divide/flowpath attribute values against physical-range bounds

hf_attr_bounds()

Physical-range bounds for divide and flowpath attributes

DBI / OGR-SQL backend

Low-level S4 classes and methods backing the lazy as_ogr() interface.

st_as_sf(<tbl_OGRSQLConnection>)

Force collection of a OGR query Convert as_ogr to a data frame or sf object

show(<OGRSQLConnection>) dbSendQuery(<OGRSQLConnection>,<ANY>) dbReadTable(<OGRSQLConnection>,<character>) dbListTables(<OGRSQLConnection>) dbExistsTable(<OGRSQLConnection>,<ANY>) dbDisconnect(<OGRSQLConnection>)

Class OGRSQLConnection (and methods)

dbDataType(<OGRSQLDriver>,<ANY>) dbIsValid(<OGRSQLDriver>) dbUnloadDriver(<OGRSQLDriver>) dbGetInfo(<OGRSQLDriver>)

Class OGRSQLDriver

show(<OGRSQLResult>) dbFetch(<OGRSQLResult>) dbClearResult(<OGRSQLResult>) dbHasCompleted(<OGRSQLResult>)

Class OGRSQLResult (and methods)

dbConnect(<OGRSQLDriver>)

dbConnect