"temp" was previously used as a variable, conflicting with its use here as the name of a function or command.

Don't know why shows "temp" was previously used as a variable, conflicting with its use here as the name of a function or command.

[Image Analyst]

Right before that for loop, put this and tell us what you see in the command window:

which -all temp

By the way, you can't do temp +=26. You need to do

temp = temp + 26;

[Maria]

sorry put what before loop?

[Image Analyst]

The one that said for i = 1 : n. But it looks like John pointed out the same thing I did, and that turned out to be the problem. Sometimes error messages can be deceptive/misleading.

Answer 1

[John D'Errico]

The MATLAB language does not include this syntax

temp += 26

Just because it works in some other language, does not make it valid syntax when in MATLAB. Just use

temp = temp + 26;

What does the error indicate? What are you being told?

temp is a variable, right? However, when MATLAB sees

temp += 26

it thinks you are trying to issue a command, or execute a function named temp. (All commands in MATLAB are also functions with the same name.) But it knows that temp is a variable, and temp cannot be used in both contexts at the same time. So it generates that error message.

[Maria]

thanks, it works!