get_ssurgo_inventory

A Raster* or Spatial* object to serve 
as a template for cropping.

template

A character string indicating where raw downloaded files should be put.
The directory will be created if missing.

raw.dir

<code>get_ssurgo_inventory</code> returns a <code>SpatialPolygonsDataFrame</code> of the SSURGO study areas within
the specified <code>template</code>. If template is not provided, returns the entire SSURGO inventory of study areas.

internal

Functions to automate downloading geospatial data available from
several federated data sources (mainly sources maintained by the US Federal
government). Currently, the package enables extraction from six datasets:
The National Elevation Dataset digital elevation models (1 and 1/3 arc-second;
USGS); The National Hydrography Dataset (USGS); The Soil Survey Geographic
(SSURGO) database from the National Cooperative Soil Survey (NCSS), which is
led by the Natural Resources Conservation Service (NRCS) under the USDA; the
Global Historical Climatology Network (GHCN), coordinated by National Climatic
Data Center at NOAA; the Daymet gridded estimates of daily weather parameters
for North America, version 3, available from the Oak Ridge National Laboratory's
Distributed Active Archive Center (DAAC); and the International Tree Ring Data Bank.

get_ssurgo_inventory: Download and crop a shapefile of the SSURGO study areas.

Description

Usage

Arguments

Value