get_ssurgo_study_area

A Raster* or Spatial* object to serve 
as a template for cropping. If missing, whose study area is returned

template

A character string indicating the SSURGO study area to be downloaded.

area

A character string indicating the date of the most recent update to the SSURGO 
area for these data. This information may be gleaned from the SSURGO Inventory (<code><a rd-options="" href="/link/get_ssurgo_inventory?package=FedData&version=2.5.7" data-mini-rdoc="FedData::get_ssurgo_inventory">get_ssurgo_inventory</a></code>).

date

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

raw.dir

<code>get_ssurgo_study_area</code> returns a named list of length 2:<ol>
<li>'spatial': A <code>SpatialPolygonsDataFrame</code> of soil mapunits 
in the template, and</li>
<li>'tabular': A named list of <code><a href="/link/data.frame?package=FedData&version=2.5.7" data-mini-rdoc="FedData::data.frame">data.frame</a>s</code> with the SSURGO tabular data.</li>
</ol>

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 seven 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); the International Tree Ring Data Bank;
and the National Land Cover Database (NLCD).

R. Bocinsky

FedData

Functions to Automate Downloading Geospatial Data Available from
Several Federated Data Sources

Dylan Beaudette

Scott Chamberlain

get_ssurgo_study_area function

<dl><dt>template</dt>
<dd>A Raster* or Spatial* object to serve 
as a template for cropping. If missing, whose study area is returned</dd>
<dt>area</dt>
<dd>A character string indicating the SSURGO study area to be downloaded.</dd>
<dt>date</dt>
<dd>A character string indicating the date of the most recent update to the SSURGO 
area for these data. This information may be gleaned from the SSURGO Inventory (<code>get_ssurgo_inventory</code>).</dd>
<dt>raw.dir</dt>
<dd>A character string indicating where raw downloaded files should be put.
The directory will be created if missing.</dd></dl>

Arguments

<code>get_ssurgo_study_area</code> returns a named list of length 2:<ol>
<li>'spatial': A <code>SpatialPolygonsDataFrame</code> of soil mapunits 
in the template, and</li>
<li>'tabular': A named list of <code><a href='https://rdrr.io/r/base/data.frame.html'>data.frame</a>s</code> with the SSURGO tabular data.</li>
</ol>

Download and crop the spatial and tabular data for a SSURGO study area. — get_ssurgo_study_area

<dl>

<dt>template</dt>
<dd>A Raster* or Spatial* object to serve 
as a template for cropping. If missing, whose study area is returned</dd>


<dt>area</dt>
<dd>A character string indicating the SSURGO study area to be downloaded.</dd>


<dt>date</dt>
<dd>A character string indicating the date of the most recent update to the SSURGO 
area for these data. This information may be gleaned from the SSURGO Inventory (<code>get_ssurgo_inventory</code>).</dd>


<dt>raw.dir</dt>
<dd>A character string indicating where raw downloaded files should be put.
The directory will be created if missing.</dd>

</dl>

get_ssurgo_study_area: Download and crop the spatial and tabular data for a SSURGO study area.

Description

Usage

Value

Arguments