helm: Helm's color data

Description Usage Format Details References Examples

Description

Contains dissimilarity data for individual difference scaling from an experiment carried out by Helm (1959).

Usage

1

Format

List containing objects of class dist

Details

A detailed description of the experiment can be found in Borg and Groenen (2005, p. 451) with the corresponding Table 21.1. containing distance estimates for color pairs. There were 14 subjects that rated the similarity of colors, 2 of whom replicated the experiment. 10 subjects have a normal color vision (labelled by N1 to N10 in our list object), 4 of them are red-green deficient in varying degrees. In this dataset we give the dissimilarity matrices for each of the subjects, including the replications. They are organized as a list of length 16 suited for smacofIndDiff computations.

The authors thank Michael Friendly and Phil Spector for data preparation.

References

Helm, C. E. (1959). A multidimensional ratio scaling analysis of color relations. Technical Report, Princeton University and Educational Testing Service. Princeton, NJ.

Borg, I., & Groenen, P. J. F. (2005). Modern Multidimensional Scaling: Theory and Applications (2nd edition). New York: Springer.

Examples

1

Example output

Loading required package: plotrix

Attaching package: 'smacof'

The following object is masked from 'package:base':

    transform

$N1
      RPur  Red  Yel  Gy1  Gy2 Green Blue  BlP Pur1
Red    6.8                                         
Yel   12.5  5.4                                    
Gy1   13.8  8.3  5.2                               
Gy2   14.2 10.4  7.2  3.7                          
Green 12.5 11.6  9.5  5.9  4.2                     
Blue  11.0 13.8 11.3 10.1  6.9   4.3               
BlP    8.6 14.3 13.5 11.1 10.2   6.8  4.8          
Pur1   5.5 11.8 14.6 12.3 12.1   9.9  7.4  4.5     
Pur2   3.5  8.9 14.1 12.5 11.2  10.7  8.7  6.1  3.6

$N2
      RPur  Red  Yel  Gy1  Gy2 Green Blue  BlP Pur1
Red    5.9                                         
Yel   11.1  4.9                                    
Gy1   18.8 10.6  4.8                               
Gy2   17.3 14.3  8.3  3.6                          
Green 16.6 16.6 13.2  5.3  3.5                     
Blue  16.5 17.3 14.6  8.2  6.8   3.8               
BlP    8.3 14.5 16.1 14.5 11.0   7.4  5.7          
Pur1   5.7  9.5 14.0 17.0 15.8  13.8 10.9  5.0     
Pur2   4.2  7.3 13.8 17.3 15.8  15.1 13.9  6.0  3.5

$N3
      RPur  Red  Yel  Gy1  Gy2 Green Blue  BlP Pur1
Red    7.1                                         
Yel   10.2  5.7                                    
Gy1   11.1 11.5  6.7                               
Gy2   12.5 10.7  8.9  3.7                          
Green 11.8 11.8  9.4  5.9  3.6                     
Blue   9.9 11.2 11.3 10.3  8.2   5.1               
BlP    8.6 12.5 12.5 11.6  9.8   8.1  4.9          
Pur1   4.3  9.2 11.9 10.9 11.3  10.2  8.7  6.3     
Pur2   2.9  8.2 10.5 11.5 11.1  10.6  9.7  7.5  3.0

$N4
      RPur  Red  Yel  Gy1  Gy2 Green Blue  BlP Pur1
Red    7.5                                         
Yel   10.3  6.9                                    
Gy1   10.7  8.5  4.9                               
Gy2   11.6 10.7  6.6  3.5                          
Green 10.6 11.1  8.7  6.3  4.1                     
Blue   9.7 12.2 10.6  7.8  6.5   5.0               
BlP    8.4 10.8 11.7 10.4  8.6   7.4  5.9          
Pur1   5.8  9.9 11.1 11.6 10.0   9.1  8.7  5.6     
Pur2   3.6  8.0 12.0 11.3 10.8  10.7  9.6  6.7  3.5

$N5
      RPur  Red  Yel  Gy1  Gy2 Green Blue  BlP Pur1
Red    6.6                                         
Yel   10.5  5.5                                    
Gy1   10.2  9.6  7.2                               
Gy2    9.6  9.3  8.3  4.7                          
Green 10.8  9.9  9.3  6.2  3.3                     
Blue   9.7 11.7 11.3  8.9  6.3   4.2               
BlP    8.5 11.6 11.9 10.3  9.1   8.9  6.6          
Pur1   4.9 10.3 11.8 11.6 11.1   9.4  8.9  5.8     
Pur2   3.5  8.0 11.5 10.2 10.4  10.6  9.2  7.3  2.9

$N6a
      RPur  Red  Yel  Gy1  Gy2 Green Blue  BlP Pur1
Red    5.2                                         
Yel    9.4  6.2                                    
Gy1   11.4 11.2  5.6                               
Gy2   13.3 13.5  8.2  4.0                          
Green 12.0 12.9  9.6  5.8  3.8                     
Blue  12.3 12.0 12.7  6.8  5.4   3.6               
BlP   10.6 11.5 13.7  9.3  7.9   5.6  4.2          
Pur1   4.9  8.2 13.4 10.5  9.9   9.0  8.2  5.1     
Pur2   3.5  6.3 11.7 12.2 13.2  10.4  9.8  6.8  3.8

$N6b
      RPur  Red  Yel  Gy1  Gy2 Green Blue  BlP Pur1
Red    5.8                                         
Yel   10.5  4.9                                    
Gy1   13.4 12.2  4.6                               
Gy2   14.0 14.8  8.3  3.5                          
Green 13.2 14.6 10.7  4.7  3.6                     
Blue  11.7 14.1 12.8  8.8  6.9   4.1               
BlP   10.2 13.4 14.1 11.0  9.4   6.9  4.1          
Pur1   6.4  9.7 12.9 11.8 12.4  10.6 10.0  4.1     
Pur2   3.5  7.9 10.9 11.7 13.7  12.2 11.1  6.9  3.4

$N7
      RPur  Red  Yel  Gy1  Gy2 Green Blue  BlP Pur1
Red    6.2                                         
Yel   10.8  7.5                                    
Gy1    9.9  8.9  6.3                               
Gy2   11.1 10.7  8.7  3.9                          
Green 10.3 10.8  9.6  6.8  5.0                     
Blue   8.8 10.6 10.1  9.4  8.3   4.3               
BlP    7.6 10.4 10.8  9.7  9.0   7.3  4.9          
Pur1   5.8  9.0 11.7 10.4 10.9   9.0  7.2  4.7     
Pur2   3.0  7.5  9.4  9.7  9.6   8.8  7.6  5.6  3.5

$N8
      RPur  Red  Yel  Gy1  Gy2 Green Blue  BlP Pur1
Red    7.5                                         
Yel    9.1  4.4                                    
Gy1   10.2  7.9  5.7                               
Gy2   12.1 10.4  8.3  3.9                          
Green 12.5 11.2 10.2  6.5  4.6                     
Blue   9.7 12.6 11.3  8.7  7.8   6.3               
BlP    9.8 11.4 12.2 10.3  9.9   9.6  4.8          
Pur1   8.3 11.3 11.9 10.7 11.2  10.6  6.8  4.6     
Pur2   6.7 10.4 10.7 12.6 11.6  11.6  9.1  7.4  5.2

$N9
      RPur  Red  Yel  Gy1  Gy2 Green Blue  BlP Pur1
Red    6.0                                         
Yel    9.4  7.1                                    
Gy1    9.5  9.5  7.6                               
Gy2    9.5  9.5  8.9  3.8                          
Green  9.8  9.9  9.8  5.3  4.8                     
Blue   8.7 10.6 10.5  7.3  6.2   4.7               
BlP    6.7 10.6 10.7  7.6  8.2   6.7  4.5          
Pur1   4.9  8.5  9.7  9.2  9.1   8.8  7.2  4.0     
Pur2   4.1  7.9 10.2 10.1  9.7   9.9  6.8  5.3  3.4

$N10
      RPur  Red  Yel  Gy1  Gy2 Green Blue  BlP Pur1
Red    9.2                                         
Yel   10.8  5.5                                    
Gy1    9.7  8.2  4.6                               
Gy2   10.1  9.4  6.7  3.7                          
Green 10.3 10.1  9.8  6.6  4.0                     
Blue   9.7 10.5 11.3  8.7  7.5   5.4               
BlP    9.0 10.8 11.9 10.6  9.9   9.3  5.6          
Pur1   6.6 11.2 11.5 10.0 10.9   9.9  8.2  5.3     
Pur2   4.6 10.5 10.2  7.7 10.6   9.7  9.7  6.3  3.4

$CD1
      RPur  Red  Yel  Gy1  Gy2 Green Blue  BlP Pur1
Red   11.5                                         
Yel   13.1  6.0                                    
Gy1   12.6  7.9  6.2                               
Gy2   10.6  8.4  8.4  5.2                          
Green 10.6  9.4  9.9  6.5  4.1                     
Blue  10.8 10.2 10.3  8.8  7.0   6.4               
BlP    7.3 11.3 12.7 11.2 10.4   9.9  4.2          
Pur1   5.4 11.5 12.9 11.7 10.8   9.4  8.4  4.5     
Pur2   5.0 11.5 10.7 10.2 10.6  10.1  8.1  6.4  3.0

$CD2a
      RPur  Red  Yel  Gy1  Gy2 Green Blue  BlP Pur1
Red    9.3                                         
Yel   10.7  6.5                                    
Gy1   10.7  8.0  4.4                               
Gy2   11.9  8.2  7.0  4.6                          
Green 11.0  8.9 10.8  9.6  5.8                     
Blue   9.8  9.3 10.4 10.8  8.0   7.7               
BlP    8.9 10.7 11.8 11.9 10.5   9.6  7.4          
Pur1   8.9 10.1 11.6 11.3 10.4  10.6  9.0  4.5     
Pur2   5.1  9.6 10.2 10.9 10.7  10.7  8.7  7.0  4.5

$CD2b
      RPur  Red  Yel  Gy1  Gy2 Green Blue  BlP Pur1
Red    9.0                                         
Yel   10.0  6.9                                    
Gy1   10.4  8.9  6.0                               
Gy2   10.0  8.4  6.8  4.2                          
Green  9.3  8.3  8.2  7.3  5.2                     
Blue   8.6  9.7 10.9 10.1  7.6   6.4               
BlP    8.8 11.1 11.6 10.2  9.2   9.5  7.0          
Pur1   7.5 10.6  9.6 10.6 10.3  10.0  7.9  4.8     
Pur2   5.8 10.3 10.5 10.3 10.3   9.6  8.7  6.7  4.3

$CD3
      RPur  Red  Yel  Gy1  Gy2 Green Blue  BlP Pur1
Red   10.4                                         
Yel   12.4  8.1                                    
Gy1   12.8 10.8  3.5                               
Gy2   13.7 10.4  4.3  3.5                          
Green 11.8  4.6  7.9  9.0  7.0                     
Blue   4.3  9.6 13.0 12.3 13.1   9.9               
BlP    4.0 12.3 13.8 12.3 13.1  11.3  3.9          
Pur1   5.5 14.2 14.8 12.9 13.6  13.6  5.3  4.7     
Pur2   4.1 13.0 13.9 14.5 14.1  12.3  6.4  3.2  2.4

$CD4
      RPur  Red  Yel  Gy1  Gy2 Green Blue  BlP Pur1
Red    9.9                                         
Yel   13.2  7.3                                    
Gy1   12.3  7.9  4.5                               
Gy2   11.1  6.9  5.3  5.3                          
Green  8.7  6.8  9.7  8.6  6.9                     
Blue   5.6  9.9 11.5 12.5  9.0   6.7               
BlP    7.4 13.1 13.7 13.4 12.2   9.7  5.5          
Pur1   6.4 12.7 14.1 14.1 12.5  11.3  7.4  4.2     
Pur2   5.8 12.1 13.4 13.1 13.4   9.9  5.4  4.0  4.3

smacof documentation built on Feb. 11, 2021, 3 a.m.