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# 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 — check if a variable is an empty matrix or an empty list

### History

 Version Description 5.5.0 Function isscalar introduced.

### Comments

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