cheddar {cheddar}R Documentation

Analysis and visualisation of ecological communities

Description

Cheddar provides a flexible, extendable representation of an ecological community and a range of functions for analysis and visualisation, focusing on food web, body mass and numerical abundance data. It also allows inter-web comparisons such as examining changes in community structure over environmental, temporal or spatial gradients.

Details of differences between versions of Cheddar are in the the online release history: https://github.com/quicklizard99/cheddar/blob/master/release_history.md.

Details

Package: cheddar
Type: Package
Version: 0.1-636
Date: 2020-02-12
License: BSD 2 clause

Author(s)

Maintainer: Lawrence Hudson <quicklizard@googlemail.com>

Examples

# The dataset of Tuesday Lake sampled in 1984
data(TL84)

# Properties of the community
CPS(TL84)

# Properties of each node
head(NPS(TL84))

# Some computed node properties
head(NPS(TL84, c('Log10M', 'Log10N', 'Log10Biomass',
                 TL='PreyAveragedTrophicLevel', TS='TrophicSpecies')))

# Properties of each trophic link
head(TLPS(TL84))

# Computed properties of each node in each link
head(TLPS(TL84, node.properties=c('Log10M', 'Log10N', 'Log10Biomass',
                                  'PreyAveragedTrophicLevel')))


# A collection of 10 webs sampled across a wide pH gradient
data(pHWebs)

# A data.frame of predictors and responses
CollectionCPS(pHWebs, c('pH',
                        S='NumberOfNodes',
                        L='NumberOfTrophicLinks',
                        C='DirectedConnectance',
                        Slope='NvMSlope'))

[Package cheddar version 0.1-636 Index]