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: xplore
See also: countNaN countNotNumber isInf isNaN

Macro: isNumber
Description: Determines whether elements of an array are usual figures or not (NaN, Inf, -Inf).

Usage: y = isNumber (x)
Input:
x array
Output:
y array with 1 (true, is NaN) or 0 (false)

Example:
library("xplore")
x = #(0/0, 1/0, -1/0, 1)
x ~ isNumber (x)
Result:

Contents of _tmp
[1,]   NaN     0 
[2,]   Inf     0 
[3,]  -Inf     0 
[4,]     1     1 

Library: xplore
See also: countNaN countNotNumber isInf isNaN

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: TTK, 960423
(C) MD*TECH Method and Data Technologies, 28.6.1999