Keywords - Function groups - @ A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Library: stats
See also: discrete descriptive cumsum

Quantlet: frequency
Description: provides frequency tables for all columns of a matrix. An additional vector of name strings can be given to identify columns by names.

Usage: freq=frequency(x{,xvars{,outwidth})
Input:
x n x p matrix, the columns correspond to the variables. The matrix may be numeric or string.
xvars optional, p x 1 string vector, variable names.
outwidth optional, integer<71, outwidth for categories, default=15.
Output:
freq string output, containing frequency table(s).

Example:

library("stats")

setenv("outputstringformat", "%s") 

x=read("lizard")

xvars="height"|"diameter"|"shade"|"daytime"|"grahami"|"total"

frequency(x,xvars)

Result:

frequency tables for all six variables, as e.g. for height:

[  1,]  

[  2,] ==================================================

[  3,]  Variable height

[  4,] ==================================================

[  5,]                 |  Frequency  Percent  Cumulative

[  6,] --------------------------------------------------

[  7,]               0 |         12    0.500      0.500

[  8,]               1 |         12    0.500      1.000

[  9,] --------------------------------------------------

[ 10,]                 |         24    1.000

[ 11,] ==================================================

[ 12,]  


Library: stats
See also: discrete descriptive cumsum

Keywords - Function groups - @ A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Author: Marlene Mueller, 970702
(C) MD*TECH Method and Data Technologies, 21.9.2000