hmap

This heatmap displays the values of a skew-symmetric matrix by colors. The option <code>dominance</code> orders the rows and columns of the matrix in such a way that the values in the uppertriangle are (approximately) positive and the values in the lower triangle are negative. The order is calculated from the row-sums of the signs of the elements of the skew-symmetric matrix.

methods

Multidimensional scaling models and methods for the visualization and analysis of asymmetric proximity data. An asymmetric data matrix has the same number of rows and columns, and these rows and columns refer to the same set of objects. At least some elements in the upper-triangle are different from the corresponding elements in the lower triangle. An example of an asymmetric matrix is a  student migration table, where the rows correspond to the countries of origin of the students and the columns to the destination countries. This package provides algorithms for three multidimensional scaling models, the slide-vector model, a scaling model with unique dimensions and the asymscal model.Furthermore, some other procedures, such as a heat map for skew-symmetric data, and the decomposition of asymmetry are also provided for the exploratory analysis of asymmetric tables.

Berrie Zielman

asymmetry

Multidimensional Scaling of Asymmetric Proximities

hmap function

<dl> <dt>x</dt>
<dd>A square matrix, either skew-symmetric or asymmetric, or an object of class <code>decomposition</code>. If an asymmetric matrix is given, the skew-symmetric part is computed.</dd> <dt>dominance</dt>
<dd>If true the signs of the skew-symmetric matrix are shown in the heatmap, if set to false the values in this matrix are shown.</dd> <dt>...</dt>
<dd>Further plot arguments: see <code>heatmap.2</code> for detailed information.</dd></dl>

Arguments

Heatmap for skew-symmetric data — hmap

<dl>

 <dt>x</dt>
<dd>A square matrix, either skew-symmetric or asymmetric, or an object of class <code>decomposition</code>. If an asymmetric matrix is given, the skew-symmetric part is computed.</dd>

 <dt>dominance</dt>
<dd>If true the signs of the skew-symmetric matrix are shown in the heatmap, if set to false the values in this matrix are shown.</dd>

 <dt>...</dt>
<dd>Further plot arguments: see <code>heatmap.2</code> for detailed information.</dd>

</dl>

hmap: Heatmap for skew-symmetric data

Description

Usage

Arguments

Examples