boolean
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, or, and, not
