R: Plot information about NMDS ordination

plot.nmds {ecodist} | R Documentation

## Plot information about NMDS ordination

### Description

Graphical display of stress and r2 for NMDS ordination along number of dimensions.

### Usage

    ## S3 method for class 'nmds'
    plot(x, plot = TRUE, xlab = "Dimensions", ...)

### Arguments

`x` | an object of S3 class `nmds`, created by `nmds()`
`plot` | optional, if TRUE a figure is produced
`xlab` | optional, label for x axis of graph
`...` | optional, other graphics parameters

### Value

Produces a two-panel plot with stress and r2 for ordination by number of dimensions. Points show the mean value; lines indicate minimum and maximum.

### Author(s)

Dean Urban

### See Also

`nmds`

### Examples

    data(iris)
    iris.d <- dist(iris[,1:4])

    ### nmds() is timeconsuming, so this was generated
    ### in advance and saved.
    ### set.seed(1234)
    ### iris.nmds <- nmds(iris.d, nits=20, mindim=1, maxdim=4)
    ### save(iris.nmds, file="ecodist/data/iris.nmds.rda")
    data(iris.nmds)

    # examine fit by number of dimensions
    plot(iris.nmds)

    # choose the best two-dimensional solution to work with
    iris.nmin <- min(iris.nmds, dims=2)

[Package ecodist version 2.0.1 Index]