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perseus:user:activities:matrixupload:createrandommatrix

Create random matrix

General

Brief description

Create a matrix of given dimensions containg random numbers drawn from a single or a superposition of several normal distributions.

Parameters

Number of rows

Specifies the number of rows the randomly created matrix should have (default: 100). Rows are called “Row 1”, Row 2“, etc.

Number of columns

Specifies the number of columns the randomly created matrix should have (default: 10). Columns are called “Column 1”, “Column 2”, etc.

Percentage of missing values

Specifies the percentage of missing values the created matrix should contain (default: 0).

Mode

Defines how many normal distributions should be included in the matrix (default: One normal distribution). The number of normal distributions can be specified from a predefined list:

  • One normal distribution (parameter window A)
  • Two normal distributions (parameter window B)
  • Many normal distributions (parameter window C)

Distance

This parameter is just relevant, if the parameter “Mode” is set to “Two normal distributions”. It defines the distance between the two generated normal distributions (default: 2).

How many

This parameter is just relevant, if the parameter “Mode” is set to “Many normal distributions”. It defines how many normal distributions should be in the generated matrix (default: 3).

Box size

This parameter is just relevant, if the parameter “Mode” is set to “Many normal distributions”. It specifies the edge length of the hyper cubes in which the centers of the normal distributions are placed at random (default: 2).


Parameter window

Perseus pop-up window: Load -> Create random matrix

perseus/user/activities/matrixupload/createrandommatrix.txt · Last modified: 2015/12/09 16:57 by temu