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boolean Scilab Group Scilab Objects boolean
NAME
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.
EXAMPLE
[1,2]==[1,3]
[1,2]==1
a=1:5; a(a>2)
SEE ALSO
matrices, or, and, not
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