get_ssurgo_study_area

<code>get_ssurgo_study_area</code> returns a named list of length 2:<ol>
<li>'spatial': A <code><a href="https://r-spatial.github.io/sf/reference/sf.html">Simple Feature</a></code> of soil mapunits
in the template, and</li>
<li>'tabular': A named list of <code><a href="/link/data.frame?package=FedData&version=4.3.0" data-mini-rdoc="FedData::data.frame">data.frame</a>s</code> with the SSURGO tabular data.</li>
</ol>

internal

Download geospatial data available
from several federated data sources (mainly sources maintained by the
US Federal government). Currently, the package enables extraction from
nine datasets: The National Elevation Dataset digital elevation
models (<https://www.usgs.gov/3d-elevation-program> 1 and 1/3 arc-second;
USGS); The National Hydrography Dataset
(<https://www.usgs.gov/national-hydrography/national-hydrography-dataset>;
USGS); The Soil Survey Geographic (SSURGO) database from the National
Cooperative Soil Survey (<https://websoilsurvey.sc.egov.usda.gov/>; NCSS),
which is led by the Natural Resources
Conservation Service (NRCS) under the USDA;
the Global Historical Climatology Network (<https://www.ncei.noaa.gov/products/land-based-station/global-historical-climatology-network-daily>; GHCN), coordinated by National Climatic Data
Center at NOAA; the Daymet gridded estimates of daily weather
parameters for North America, version 4, available from the Oak Ridge
National Laboratory's Distributed Active Archive Center
(<https://daymet.ornl.gov/>; DAAC); the
International Tree Ring Data Bank; the National Land Cover
Database (<https://www.mrlc.gov/>; NLCD); the Cropland Data Layer from the National Agricultural
Statistics Service (<https://www.nass.usda.gov/Research_and_Science/Cropland/SARS1a.php>; NASS);
and the PAD-US dataset of protected area boundaries (<https://www.usgs.gov/programs/gap-analysis-project/science/pad-us-data-overview>; USGS).

R. Bocinsky

FedData

Download Geospatial Data Available from Several Federated Data
Sources

Dylan Beaudette

Scott Chamberlain

Jeffrey Hollister

Julia Gustavsen

get_ssurgo_study_area function

<dl><dt>template</dt>
<dd>An <code><a href="https://r-spatial.github.io/sf/reference/sf.html">Simple Feature</a></code>
or <code><a href="/link/SpatRaster?package=FedData&version=4.3.0" data-mini-rdoc="FedData::SpatRaster">SpatRaster</a></code> 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><a href='https://r-spatial.github.io/sf/reference/sf.html'>Simple Feature</a></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>An <code><a href='https://r-spatial.github.io/sf/reference/sf.html'>Simple Feature</a></code>
or <code><a href='https://rdrr.io/pkg/terra/man/SpatRaster-class.html'>SpatRaster</a></code> 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