Case and Space Sensitivity
MATLAB® code is sensitive to casing, and insensitive to blank spaces except when defining arrays.
Uppercase and Lowercase
In MATLAB code, use an exact match with regard to case
for variables, files, and functions. For example, if you have a variable,
you cannot refer to that variable as
A. It is a
best practice to use lowercase only when naming functions. This is
especially useful when you use both Microsoft® Windows® and UNIX®1
platforms because their file systems behave differently
with regard to case.
When you use the
help function, the help
displays some function names in all uppercase, for example,
solely to distinguish the function name from the rest of the text.
Some functions for interfacing to Oracle® Java® software do
use mixed case and the command-line help and the documentation accurately
Blank spaces around operators such as
( ), are optional, but they can improve readability.
For example, MATLAB interprets the following statements the same
y = sin (3 * pi) / 2 y=sin(3*pi)/2
However, blank spaces act as delimiters in horizontal concatenation. When defining row vectors, you can use spaces and commas interchangeably to separate elements:
A = [1, 0 2, 3 3]
A = 1 0 2 3 3
[1 sin (pi) 3]produces a much different result than
[1 sin(pi) 3]does.
[1 sin (pi) 3]
Error using sin Not enough input arguments.
[1 sin(pi) 3]
ans = 1.0000 0.0000 3.0000
1 UNIX is a registered trademark of The Open Group in the United States and other countries.