Plot information about NMDS ordination
Graphical display of stress and r2 for NMDS ordination along number of dimensions.
## S3 method for class 'nmds' plot(x, plot = TRUE, xlab = "Dimensions", ...)
x |
an object of S3 class |
plot |
optional, if TRUE a figure is produced |
xlab |
optional, label for x axis of graph |
... |
optional, other graphics parameters |
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.
Dean Urban
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)
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