Cluster Analysis in Data Analysis: A Practical Guide

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##   Sepal.Length Sepal.Width Petal.Length Petal.Width Species
## 1          5.1         3.5          1.4         0.2  setosa
## 2          4.9         3.0          1.4         0.2  setosa
## 3          4.7         3.2          1.3         0.2  setosa
## 4          4.6         3.1          1.5         0.2  setosa
## 5          5.0         3.6          1.4         0.2  setosa
## 6          5.4         3.9          1.7         0.4  setosa

## 'data.frame':    150 obs. of  5 variables:
##  $ Sepal.Length: num  5.1 4.9 4.7 4.6 5 5.4 4.6 5 4.4 4.9 ...
##  $ Sepal.Width : num  3.5 3 3.2 3.1 3.6 3.9 3.4 3.4 2.9 3.1 ...
##  $ Petal.Length: num  1.4 1.4 1.3 1.5 1.4 1.7 1.4 1.5 1.4 1.5 ...
##  $ Petal.Width : num  0.2 0.2 0.2 0.2 0.2 0.4 0.3 0.2 0.2 0.1 ...
##  $ Species     : Factor w/ 3 levels "setosa","versicolor",..: 1 1 1 1 1 1 1 1 1 1 ...

##   [1] 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2
##  [38] 2 2 2 2 2 2 2 2 2 2 2 2 2 1 1 1 3 3 3 1 3 3 3 3 3 3 3 3 1 3 3 3 3 1 3 3 3
##  [75] 3 1 1 1 3 3 3 3 3 3 3 1 1 3 3 3 3 3 3 3 3 3 3 3 3 3 1 3 1 1 1 1 3 1 1 1 1
## [112] 1 1 3 3 1 1 1 1 3 1 3 1 3 1 1 3 1 1 1 1 1 1 3 3 1 1 1 3 1 1 1 3 1 1 1 3 1
## [149] 1 3

##   Sepal.Length Sepal.Width Petal.Length Petal.Width
## 1   1.13217737  0.08812645    0.9928284   1.0141287
## 2  -1.01119138  0.85041372   -1.3006301  -1.2507035
## 3  -0.05005221 -0.88042696    0.3465767   0.2805873

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## # A tibble: 3 × 7
##   Sepal.Length Sepal.Width Petal.Length Petal.Width  size withinss cluster
##          <dbl>       <dbl>        <dbl>       <dbl> <int>    <dbl> <fct>  
## 1       1.13        0.0881        0.993       1.01     47     47.5 1      
## 2      -1.01        0.850        -1.30       -1.25     50     47.4 2      
## 3      -0.0501     -0.880         0.347       0.281    53     44.1 3

## # A tibble: 1 × 4
##   totss tot.withinss betweenss  iter
##   <dbl>        <dbl>     <dbl> <int>
## 1   596         139.      457.     2

##    
##     setosa versicolor virginica
##   1      0         11        36
##   2     50          0         0
##   3      0         39        14

## [1] 0.09333333

## 
## Attaching package: 'dbscan'

## The following object is masked from 'package:stats':
## 
##     as.dendrogram