addVolumeFraction

Symbolize volume fraction on an existing soil profile collection plot.

The Algorithms for Quantitative Pedology (AQP) project was started in 2009 to organize a loosely-related set of concepts and source code on the topic of soil profile visualization, aggregation, and classification into this package (aqp). Over the past 8 years, the project has grown into a suite of related R packages that enhance and simplify the quantitative analysis of soil profile data. Central to the AQP project is a new vocabulary of specialized functions and data structures that can accommodate the inherent complexity of soil profile information; freeing the scientist to focus on ideas rather than boilerplate data processing tasks <doi:10.1016/j.cageo.2012.10.020>. These functions and data structures have been extensively tested and documented, applied to projects involving hundreds of thousands of soil profiles, and deeply integrated into widely used tools such as SoilWeb <https://casoilresource.lawr.ucdavis.edu/soilweb-apps>. Components of the AQP project (aqp, soilDB, sharpshootR, soilReports packages) serve an important role in routine data analysis within the USDA-NRCS Soil Science Division. The AQP suite of R packages offer a convenient platform for bridging the gap between pedometric theory and practice.

Dylan Beaudette

Algorithms for Quantitative Pedology

Pierre Roudier

Andrew Brown

addVolumeFraction function

<dl><dt>x</dt>
<dd>a <code>SoilProfileCollection</code> object</dd>
<dt>colname</dt>
<dd>character vector of length 1, naming the column containing volume fraction data (horizon-level attribute). Values should be within 0-100 percent.</dd>
<dt>res</dt>
<dd>integer, resolution of the grid used to symbolize volume fraction</dd>
<dt>cex.min</dt>
<dd>minimum symbol size</dd>
<dt>cex.max</dt>
<dd>maximum symbol size</dd>
<dt>pch</dt>
<dd>integer, plotting character code</dd>
<dt>col</dt>
<dd>symbol color, either a single color or as many colors as there are horizons in <code>x</code></dd></dl>

Arguments

Author

Symbolize Volume Fraction within a Soil Profile Collection Plot — addVolumeFraction

<dl>

<dt>x</dt>
<dd>a <code>SoilProfileCollection</code> object</dd>


<dt>colname</dt>
<dd>character vector of length 1, naming the column containing volume fraction data (horizon-level attribute). Values should be within 0-100 percent.</dd>


<dt>res</dt>
<dd>integer, resolution of the grid used to symbolize volume fraction</dd>


<dt>cex.min</dt>
<dd>minimum symbol size</dd>


<dt>cex.max</dt>
<dd>maximum symbol size</dd>


<dt>pch</dt>
<dd>integer, plotting character code</dd>


<dt>col</dt>
<dd>symbol color, either a single color or as many colors as there are horizons in <code>x</code></dd>

</dl>

addVolumeFraction: Symbolize Volume Fraction within a Soil Profile Collection Plot

Description

Usage

Arguments

Author

Details

See Also