parentheses

Arguments

x

matrix of any possible type

v

row or column vector of any possible type

l

list variable

func

any function name

e1,e2,...

any possible type expression

Description

Left and right parenthesis are used to

* specify evaluation order within expressions;

* form right-hand-side functions argument list. Within multiple rhs arguments must be separated by comma;

* select elements within vectors, matrices and lists. See help on extraction and insertion for more precisions;

[x1,x2,...]=(e1,e2,...) is equivalent to first performing %t_1 = e1, %t_2 = e2, ..., and then x1 = %t_1, x2 = %t_2, ..., where the variables %t_i, i = 1, 2, ... are invisible to the user.

Examples

3^(-1)
x=poly(0,"x");
//
(x+10)/2
i3=eye(3,3)
//
a=[1 2 3;4 5 6;7 8 9],a(1,3),a([1 3],:),a(:,3)
a(:,3)=[]
a(1,$)=33
a(2,[$ $-1])
a(:,$+1)=[10;11;12]
//
w=ssrand(2,2,2);ssprint(w)
ssprint(w(:,1))
ss2tf(w(:,1))
//
l=list(1,2,3,4)
[a,b,c,d]=l(:)
l($+1)='new'
//
v=%t([1 1 1 1 1])
//
[x,y,z]=(1,2,3)

See also

• colon — Ranging operator. Addresses all elements along an array dimension or of a list.
• comma — (,) comma; instruction, argument separator
• brackets — Concatenation. Recipients of an assignment. Results of a function
• list — a Scilab object and a list definition function
• extraction — matrix and list entry extraction
• insertion — partial variable assignation or modification