rectangles: Rectangles

Description Usage Format References Examples

Description

These data are based on an experiment by Borg and Leutner (1983). They constructed rectangles on the basis of the grid design (see rect_constr). Each point in this grid defines a rectangle. Rectangle 16, for example, had a width of 4.25 cm and a height of 1.25 cm; rectangle 4 was 3.00 cm wide and 2.75 cm tall. A total of 21 persons rated (twice) the similarity of each pair of these 16 rectangles (on a 10-point scale ranging from from 0 = equal/identical to 9 = very different) The means of these ratings over persons and replications are given in rectangles. A second dataset (rectangles2) is constructed based on area and shape of the rectangles.

Usage

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Format

The rectangles are object of class dist, the constraints are given as matrix

References

Borg, I., & Leutner, D. (1983). Dimensional models for the perception of rectangles. Perception and Psychophysics, 34, 257-269.

Borg, I., Groenen, P. J. F., & Mair, P. (2017). Applied Multidimensional Scaling and Unfolding. New York, Springer.

Examples

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