classify: Classification function

In DiscriMiner: Tools of the Trade for Discriminant Analysis

Description

Classify provided observations based on a given Discriminant object

Usage

  classify(DA_object, newdata)

Arguments

DA_object	discriminant analysis object
newdata	vector or matrix or data frame with variables for which their classes will be calculated

Details

A DA_object is a discriminant analysis (DA) object obtained from a geometric predictive DA (class "geoda"), a linear DA (class "linda"), a quadratic DA (class "quada"), or a DISQUAL analysis (class "disqual")

Value

A list with the following elements

scores	discriminant scores for each observation
pred_class	predicted class

Author(s)

Gaston Sanchez

See Also

geoDA, linDA, quaDA, plsDA, disqual

Examples

## Not run: 
  # load iris dataset
  data(iris)

  # linear discriminant analysis
  my_lin1 = linDA(iris[,1:4], iris$Species)

  # select a sample of 15 observations
  set.seed(111)
  obs = sample(1:nrow(iris), 15)
  some_data = iris[obs, 1:4]

  # classify some_data
  get_classes = classify(my_lin1, some_data)
  get_classes

  # compare the results against original class
  table(iris$Species[obs], get_classes$pred_class)
  
## End(Not run)

Example output

$scores
      setosa versicolor  virginica
1  72.204394   37.73393  -3.626036
2  11.523187   73.13868  69.971681
3  35.016494   71.91980  60.339169
4  72.407271   36.48113  -6.440942
5  97.625094   45.62021  -1.404146
6  85.223110   46.55924   5.797653
7  25.254888   74.92439  67.167839
8  23.616719   91.26464  95.590199
9  25.501982  115.82971 128.878440
10 30.470565   90.53837  89.741924
11 13.813633   60.37912  51.766075
12  8.252327   79.14437  83.169811
13 17.650298   97.28761 105.801427
14 39.288981   83.60302  74.590548
15  2.270057   79.48704  82.136496

$pred_class
 [1] setosa     versicolor versicolor setosa     setosa     setosa    
 [7] versicolor virginica  virginica  versicolor versicolor virginica 
[13] virginica  versicolor virginica 
Levels: setosa versicolor virginica

            
             setosa versicolor virginica
  setosa          4          0         0
  versicolor      0          6         0
  virginica       0          0         5

DiscriMiner documentation built on May 1, 2019, 10:32 p.m.