parse_nssh_index: Parse the National Soil Survey Handbook (NSSH) Table of...

In brownag/SoilKnowledgeBase: USDA-NRCS Soil Knowledge Base

Parse the National Soil Survey Handbook (NSSH) Table of Contents to get eDirectives links

Description

parse_nssh_index provides a basic framework and folder structure for assets that are part of the National Soil Survey Handbook (NSSH) a key part of National Cooperative Soil Survey (NCSS) standards.

Usage

parse_nssh_index(
  logfile = file.path(outpath, "NSSH/NSSH.log"),
  nssh_url = NULL,
  ignore.headers = NULL,
  outpath = "./inst/extdata",
  download_pdf = "ifneeded",
  output_types = c("txt", "html"),
  keep_pdf = FALSE,
  ...
)

Arguments

logfile	Path to log file; default file.path(outpath, "NSSH/NSSH.log")
nssh_url	A URL to parse for Table of Contents information.
ignore.headers	A character vector of h3 level headers to ignore on the NSSH Table of contents webpage.
outpath	A directory path to create "inst/extdata/NSSH" folder structure.
download_pdf	Download official PDF files from eDirectives? default: "ifneeded"; options: TRUE/FALSE
output_types	Options include c("txt","html") for processed PDF files.
keep_pdf	Keep PDF files after processing TXT?
...	Additional arguments to 'curl::curl_download()'

Value

A data.frame object containing link, part and section information for the NSSH. A directory "inst/extdata/NSSH" is created in outpath (Default: "./inst/extdata/NSSH/") with a numeric subfolder for each part in the NSSH.

brownag/SoilKnowledgeBase documentation built on April 5, 2025, 1:32 a.m.