lakeFetch

The function calculates the maximum in lake distance of a line along an input
bearing.

Lake morphometry metrics are used by limnologists to understand,
among other things, the ecological processes in a lake. Traditionally, these
metrics are calculated by hand, with planimeters, and increasingly with
commercial GIS products. All of these methods work; however, they are either
outdated, difficult to reproduce, or require expensive licenses to use. The
'lakemorpho' package provides the tools to calculate a typical suite
of these metrics from an input elevation model and lake polygon. The metrics
currently supported are: fetch, major axis, minor axis, major/minor axis
ratio, maximum length, maximum width, mean width, maximum depth, mean depth,
shoreline development, shoreline length, surface area, and volume.

Jeffrey W Hollister

lakemorpho

Lake Morphometry Metrics

Jeffrey W. Hollister

Jemma Stachelek

lakeFetch function

<dl><dt>inLakeMorpho</dt>
<dd>An object of <code>lakeMorphoClass</code>. Output of the 
<code>lakeSurroundTopo</code> function would be appropriate as input</dd>
<dt>bearing</dt>
<dd>Numeric that indicates the bearing of the desired fetch</dd>
<dt>addLine</dt>
<dd>Boolean to determine if the selected max length line should be 
added to the inLakeMorpho object. Defaults to True. Note that the 
line is returned in the same projection as the input data.</dd></dl>

Arguments

Function to calculate fetch along an input bearing — lakeFetch

<dl>

<dt>inLakeMorpho</dt>
<dd>An object of <code>lakeMorphoClass</code>. Output of the 
<code>lakeSurroundTopo</code> function would be appropriate as input</dd>


<dt>bearing</dt>
<dd>Numeric that indicates the bearing of the desired fetch</dd>


<dt>addLine</dt>
<dd>Boolean to determine if the selected max length line should be 
added to the inLakeMorpho object. Defaults to True. Note that the 
line is returned in the same projection as the input data.</dd>

</dl>

lakeFetch: Function to calculate fetch along an input bearing

Description

Usage

Value

Arguments

References

Examples