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: | 0.1-633
Date: | 2018-06-09
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 0.1-633 Index]