Description Usage Arguments Value Author(s) Examples
Create plots used to study vegclust clustering results for an increasing number of clusters
1 2 3 |
x |
An object returned from functions |
type |
A string indicating the type of plot desired. Current accepted values are "hnc","hmemb","var","hcs" and "valid". |
excludeFixed |
A flag to indicate whether clusters with fixed centroids should be excluded from plots. |
verbose |
A flag to print extra information. |
ylim |
A vector with the limits for the y axis. |
xlab |
String label for the x axis. |
ylab |
String label for the y axis. |
maxvar |
Maximum cluster variance allowed for the |
minsize |
Minimum cluster size allowed for the |
... |
Additional plotting parameters. |
Different information is returned depending on the type of plot chosen.
Miquel De Cáceres, Forest Science Center of Catalonia
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 | ## Loads data
data(wetland)
## This equals the chord transformation
## (see also \code{\link{decostand}} in package 'vegan')
wetland.chord = as.data.frame(sweep(as.matrix(wetland), 1,
sqrt(rowSums(as.matrix(wetland)^2)), "/"))
## Create noise clustering from hierarchical clustering at different number of clusters
wetland.hc = hclust(dist(wetland.chord),method="ward")
wetland.nc = hier.vegclust(wetland.chord, wetland.hc, cmin=2, cmax=5, m = 1.2,
dnoise=0.75, method="NC")
## Plot changes in the number of objects falling into the noise cluster
plot(wetland.nc, type="hnc")
## Plots the number of objects falling into "true" clusters,
## the number of objects considered intermediate,
## and the number of objects falling into the noise
plot(wetland.nc, type="hmemb")
## Plot minimum, maximum and average cluster size
plot(wetland.nc, type="hcs")
## Plot minimum, maximum and average cluster variance
plot(wetland.nc, type="var")
## Plot number of groups with high variance, low membership or both
plot(wetland.nc, type="valid")
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