polygon_from_extent

An <code><a rd-options="" href="/link/extent?package=FedData&version=2.5.7" data-mini-rdoc="FedData::extent">extent</a></code> object, or an object from which an extent object can be retrieved.

A PROJ.4 formatted string defining the required projection. If NULL, 
the function will attempt to get the projection from x using <code><a rd-options="" href="/link/projection?package=FedData&version=2.5.7" data-mini-rdoc="FedData::projection">projection</a></code>

proj4string

Turn an extent object into a polygon

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

polygon_from_extent function

<dl><dt>x</dt>
<dd>An <code>extent</code> object, or an object from which an extent object can be retrieved.</dd>
<dt>proj4string</dt>
<dd>A PROJ.4 formatted string defining the required projection. If NULL, 
the function will attempt to get the projection from x using <code>projection</code></dd></dl>

Arguments

Turn an extent object into a polygon — polygon_from_extent

<dl>

<dt>x</dt>
<dd>An <code>extent</code> object, or an object from which an extent object can be retrieved.</dd>


<dt>proj4string</dt>
<dd>A PROJ.4 formatted string defining the required projection. If NULL, 
the function will attempt to get the projection from x using <code>projection</code></dd>

</dl>

polygon_from_extent: Turn an extent object into a polygon

Description

Usage

Value

Arguments