关系运算符标和非标量数据上也能正常工作。关系运算符对数组进行元素元素元素设置为逻辑1（真）的关系是真实的和元素设置为逻辑0（假），它是两个阵列，并返回一个同样大小的逻辑阵列之间的比较。

以下的表格显示的关系运算符：

操作符	描述
<	Less than
<=	Less than or equal to
>	Greater than
>=	Greater than or equal to
==	Equal to
~=	Not equal to

例子

创建一个脚本文件，并键入下面的代码：

a = 100;
b = 200;
if (a >= b)
max = a
else
max = b
end

当运行该文件，它会产生以下结果：

max =
   200

除了在上述的关系运算符，MATLAB提供下列命令/函数用于同样的目的：

函数	描述
eq(a, b)	Tests whether a is equal to b
ge(a, b)	Tests whether a is greater than or equal to b
gt(a, b)	Tests whether a is greater than b
le(a, b)	Tests whether a is less than or equal to b
lt(a, b)	Tests whether a is less than b
ne(a, b)	Tests whether a is not equal to b
isequal	Tests arrays for equality
isequaln	Tests arrays for equality, treating NaN values as equal

例子

创建一个脚本文件，并键入下面的代码：

% comparing two values
a = 100;
b = 200;
if (ge(a,b))
max = a
else
max = b
end
% comparing two different values
a = 340;
b = 520;
if (le(a, b))
disp(' a is either less than or equal to b')
else
disp(' a is greater than b')
end

当运行该文件，它会产生以下结果：

max =
   200
 a is either less than or equal to b