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_targets.R
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_targets.R
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library(targets)
tar_option_set(packages = c("nhdplusTools", "sf", "dplyr", "dataRetrieval",
"sbtools", "readr", "knitr", "mapview", "data.table"),
memory = "transient", garbage_collection = TRUE,
debug = "gage_hydrologic_locations_with_mainstems")
reference_file <- "out/ref_gages.gpkg"
# this is a set of location overrides
nwis_hydrolocation <- "data/nwis_hydrolocations.csv"
# These are generated for a USGS namespace in geoconnex.
usgs_reference_file <- "out/usgs_gages.gpkg"
usgs_nldi_file <- "out/usgs_nldi_gages.geojson"
pid_file <- "out/ref_gages_pid.csv"
nldi_file <- "out/nldi_gages.geojson"
index_dir <- "docs/"
sourced <- sapply(list.files("R", pattern = "*.R$", full.names = TRUE), source)
list(
# NHDPlusV2 downloaded with nhdplusTools
tar_target("nat_db", download_nhdplusv2("data/nhdp")),
# Only the network flowlines for now -- non-network could be pulled in.
tar_target("nhdpv2_fline", read_sf(nat_db, "NHDFlowline_Network")),
tar_target("nhdpv2_fline_proc", select(st_transform(nhdpv2_fline, 5070),
COMID, REACHCODE, ToMeas, FromMeas)),
tar_target("mainstems", get_all_mainstems("data/mainstems/")),
tar_target("vaa", get_vaa(atts = c("comid", "levelpathi", "hydroseq"),
updated_network = TRUE)),
### Downloaders ###
# This function downloads all NWIS sites from the site file
tar_target("nwis_gage", get_nwis_sites()),
# This function downloads all cdec sites
tar_target("cdec_gage", get_cdec_data()),
# This function downloads all CO gage data
tar_target("co_gage", get_co_data()),
# This function downloads all gages from the PNW catalog
# WIP: will be incorporated in the future.
tar_target("pnw_gage", get_pnw_data()),
# This functions loads locally stored streamstats sites.
tar_target("streamstats_sites", get_streamstats_sites()),
# This function loads the SWIMS gage locations.
tar_target("swims_gage", get_swim_data()),
### metadata integration ###
# this function filters and renames gage locations to a common table
# It does not handle location information and duplicates are fine at this stage.
tar_target("gage_locations", get_gage_locations(nwis_gage,
streamstats_sites,
cdec_gage,
co_gage,
pnw_gage)),
### location normalization ###
# This Gage layer from NHDPlusV2 is a basic starting point for
# NWIS gage locations.
tar_target("nhdpv2_gage", select(read_sf(nat_db, "Gage"),
nhdpv2_REACHCODE = REACHCODE,
nhdpv2_REACH_measure = Measure,
nhdpv2_COMID = FLComID,
provider_id = SOURCE_FEA)),
tar_target("nwis_gage_hydro_locatons", get_nwis_hydrolocations(nhdpv2_gage,
swims_gage,
nwis_hydrolocation)),
tar_target("cdec_gage_address", get_cdec_gage_locations(cdec_gage)),
tar_target("co_gage_address", get_co_gage_locations(co_gage)),
### Registry ###
# Each entry will have a provider and provider_id that acts as a unique
# primary key. The existing registry file will have a unique attribute
# that contains that primary key.
tar_target("providers_csv", command = "reg/providers.csv", format = "file"),
tar_target("providers", read_csv(providers_csv)),
tar_target("registry", build_registry(gage_locations,
registry = "reg/ref_gages.csv",
providers = providers)),
# Also create a table of reference locations for the registered gages.
# unlike the registry, this may update to have the "best" location of a gage.
tar_target("ref_locations", build_reference_location(gage_locations,
reference_locations = "reg/ref_locations.csv",
registry = "reg/ref_gages.csv",
providers = providers)),
### spatial integration ###
# This function takes a table of all ref_locations, latest all_gages
# locations and a list of provided hydrologic locations. The provider
# is a way to join on provider and provider_id in the all_gages input.
# The order that hydrologic locations sources are provided will determine
# precidence -- last defined wins.
tar_target("gage_hydrologic_locations", get_hydrologic_locations(
all_gages = gage_locations,
ref_locations = ref_locations,
hydrologic_locations = list(
list(provider = "https://waterdata.usgs.gov",
locations = nwis_gage_hydro_locatons),
list(provider = "https://cdec.water.ca.gov",
locations = cdec_gage_address),
list(provider = "https://dwr.state.co.us",
locations = co_gage_address)),
nhdpv2_fline = sf::st_zm(nhdpv2_fline_proc))),
tar_target("gage_hydrologic_locations_with_mainstems", add_mainstems(gage_hydrologic_locations,
mainstems, vaa)),
# based on all known gages from all providers, find potential duplicates.
# starts by finding gages within 100m of eachother then checks if they are on different flowlines.
tar_target("duplicate_locations", find_duplicate_locations(gage_hydrologic_locations_with_mainstems)),
### output ###
# Creates an output for USGS namespace reference locations
tar_target("usgs_reference_out", write_usgs_reference(gage_hydrologic_locations_with_mainstems,
registry, providers, usgs_reference_file,
usgs_nldi_file)),
tar_target("reference_out", write_reference(gage_hydrologic_locations_with_mainstems,
registry, providers, reference_file,
nldi_file,
duplicate_locations = duplicate_locations)),
tar_target("registry_out", write_registry(registry, "reg/ref_gages.csv")))