constantDensitySampling

Perform sampling at a constant density over all polygons within a SpatialPolygonsDataFrame object.

manip

Miscellaneous soil data management, summary, visualization, and conversion utilities to support soil survey.

Dylan Beaudette

sharpshootR

A Soil Survey Toolkit

Jay Skovlin

Stephen Roecker

Andrew Brown

USDA-NRCS Soil Survey Staff 

constantDensitySampling function

<dl> <dt>x</dt>
<dd>a <code>SpatialPolygonsDataFrame</code> object in a projected CRS with units of meters</dd> <dt>polygon.id</dt>
<dd>name of attribute in <code>x</code> that contains a unique ID for each polygon</dd> <dt>parallel</dt>
<dd>invoke parallel back-end</dd> <dt>cores</dt>
<dd>number of CPU cores to use for parallel operation</dd> <dt>n.pts.per.ac</dt>
<dd>requested sampling density in points per acre (results will be close)</dd> <dt>min.samples</dt>
<dd>minimum requested number of samples per polygon</dd> <dt>sampling.type</dt>
<dd>sampling type</dd></dl>

Arguments

Author

Constant Density Sampling — constantDensitySampling

<dl>

 <dt>x</dt>
<dd>a <code>SpatialPolygonsDataFrame</code> object in a projected CRS with units of meters</dd>

 <dt>polygon.id</dt>
<dd>name of attribute in <code>x</code> that contains a unique ID for each polygon</dd>

 <dt>parallel</dt>
<dd>invoke parallel back-end</dd>

 <dt>cores</dt>
<dd>number of CPU cores to use for parallel operation</dd>

 <dt>n.pts.per.ac</dt>
<dd>requested sampling density in points per acre (results will be close)</dd>

 <dt>min.samples</dt>
<dd>minimum requested number of samples per polygon</dd>

 <dt>sampling.type</dt>
<dd>sampling type</dd>

</dl>

constantDensitySampling: Constant Density Sampling

Description

Usage

Value

Arguments

Author

See Also