boolean - Scilab Objects, boolean variables and operators & (original) (raw)
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Please note that the recommended version of Scilab is 2026.0.1. This page might be outdated.
See the recommended documentation of this function
Scilab help >> Scilab > boolean
Scilab Objects, boolean variables and operators & | ~
Description
A boolean variable is %T (for "true") or %F (for "false"). These variables can be used to define matrices of booleans, with the usual syntax. Boolean matrices can be manipulated as ordinary matrices for elements extraction/insertion and concatenation. Note that other usual operations (+, *, -, ^, etc) are undefined for booleans matrices, three special operators are defined for boolean matrices:
~b
is the element wise negation of boolean b (matrix).
b1&b2
is the element wise logical and of b1 and b2 (matrices).
b1|b2
is the element wise logical or of b1 and b2 (matrices).
Boolean variables can be used for indexing matrices or vectors.
For instance a([%T,%F,%T],:) returns the submatrix made of rows 1 and 3 of a. Boolean sparse matrices are supported.
Examples
[1,2]==[1,3] [1,2]==1 a=1:5; a(a>2)
See Also
- matrices — Scilab object, matrices in Scilab
- or — logical or of the elements of an array
- and — logical and of the elements of an array
- not — (~) logical not