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Справка Scilab >> Основные функции > isscalar

isscalar

check if a variable is a scalar.

Syntax

t=isscalar(x)

Arguments

x

scalar,vector, matrix, hypermatrix, list, array of structures or cells

t

a boolean

Description

isscalar(x) returns true if x is a scalar (if size(x) is 1). Note that isscalar([]) returns false.

Examples

isscalar(ones(10,10))
isscalar(1)
isscalar("s")
s = struct();
isscalar(s) // Empty structure
clear s
s.a = %z;
s.b = 2;
isscalar(s) // Scalar structure
clear s
s(1,2).a = 3;
s(1,3).b = %z;
isscalar(s) // Row array of structures
clear s
s(2,1).a = "w";
s(3,1).b = %t;
isscalar(s) // Column array of structures

See also

  • ismatrix — checks if an object is a non-empty 1D or 2D matrix or array
  • isrow — check if a variable is a row
  • iscolumn — check if a variable is a column
  • issquare — check if a variable is a square matrix
  • isempty — проверка, является ли переменная пустой матрицей или пустым списком

History

ВерсияОписание
5.5.0 Function isscalar introduced.
Scilab Enterprises
Copyright (c) 2011-2017 (Scilab Enterprises)
Copyright (c) 1989-2012 (INRIA)
Copyright (c) 1989-2007 (ENPC)
with contributors
Last updated:
Tue Feb 14 15:13:21 CET 2017