lakemorpho v1.1.1

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Lake Morphometry Metrics

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 All of these methods work; however, they are either outdated, difficult to reproduce, or require expensive licenses to use.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.

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lakemorpho

The purpose of lakemorpho is to provide a suite of tools that can be used to calculate basic lake morphometry metrics from an input SpatialPolygonsDataframe of a lake and a digital elevation model, as a RasterLayer, for the terrain surrounding that lake. These tools are being used to calculate lake morphometry metrics for all "lakepond" waterbodies in the NHDPlus V2.

Metrics Included

lakemorpho calculates the following metrics

  • Surface Area
  • Shoreline Length
  • Shoreline Development
  • Maximum Depth
  • Mean Depth
  • Lake Volume
  • Maximum Lake Length
  • Mean Lake Width
  • Maximum Lake Width
  • Major and Minor Axis
  • Fetch from a specified bearing

To install

Install version 1.1.0 of lakemorpho from CRAN:

install.packages("lakemorpho")
require(lakemorpho)

Install development version of lakemorpho from GitHub:

install.packages("devtools")
require(devtools)
install_github("USEPA/lakemorpho")
require(lakemorpho)

EPA Disclaimer

The United States Environmental Protection Agency (EPA) GitHub project code is provided on an "as is" basis and the user assumes responsibility for its use. EPA has relinquished control of the information and no longer has responsibility to protect the integrity, confidentiality, or availability of the information. Any reference to specific commercial products, processes, or services by service mark, trademark, manufacturer, or otherwise, does not constitute or imply their endorsement, recomendation or favoring by EPA. The EPA seal and logo shall not be used in any manner to imply endorsement of any commercial product or activity by EPA or the United States Government.

EPA Static Source

If for some reason you need a link to a static source file that is accessible from US EPA.

Functions in lakemorpho

Name Description
lakeMaxDepth Estimate maximum lake depth
lakeMaxLength Caluclate maximum lake length
lakeMinorMajorRatio Calculate the ratio of the minor axis length to major axis length
calcLakeMetrics Calculate all Lake Morphometry Metrics
lakeMorphoClass Function to create a lakeMorpho class - this is input to all other methods
lakeShorelineDevelopment Function to calculate shoreline development
exampleLake Lake Data for lakemorpho examples
exampleElev Elevation Data for lakemorpho examples
inputLM lakemorpho class data for lakemorpho examples
lakeShorelineLength Function to calculate shoreline length
lakeMinorAxisLength Calculate the length of the minor axis for lake
lakeFetch Function to calculate fetch along an input bearing
lakeMeanWidth Function to return lake Mean Width
lakeMajorAxisLength Calculate the length of the major axis for lake
lakeVolume Caluclates Lake Volume in R
plot.lakeMorpho Default plotting of a lakeMorpho object
lakemorpho Lake Morphometry in R
lakeMaxWidth Function to find line representing maximum lake Width
lakeMeanDepth Function to return lake Mean Depth
lakeSurfaceArea Return lake surface area
lakeSurroundTopo Calculate surrounding topography for lake
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Details

Type Package
URL http://www.github.com/jhollist/lakemorpho
BugReports https://www.github.com/jhollist/lakemorpho/issues
License CC0
RoxygenNote 6.0.1
NeedsCompilation no
Packaged 2018-02-09 22:03:17 UTC; jhollist
Repository CRAN
Date/Publication 2018-02-11 14:45:57 UTC

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