關係運算符標和非標量數據上也能正常工作。關係運算符對數組進行元素元素元素設置為邏輯1（真）的關係是真實的和元素設置為邏輯0（假），它是兩個陣列，並返回一個同樣大小的邏輯陣列之間的比較。

以下的表格顯示的關係運算符：

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

創建一個腳本文件，並鍵入下麵的代碼：

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

當運行該文件，它會產生以下結果：

max =
   200

除了在上述的關係運算符，MATLAB提供下列命令/函數用於同樣的目的：

函數	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

創建一個腳本文件，並鍵入下麵的代碼：

% 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

當運行該文件，它會產生以下結果：

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