Global variable scope is not applied in try and catch

global Name;
clear all;
close all force;
prompt = 'Enter Name';
%Name  = input(prompt,'s');
Name  = input(prompt);
for i=1:10
Depth;
DetectFaceandEyes;
calcEyedistance
try
    load db;
    euclideanDistance = round(euclideanDistance,1);
    F=[euclideanDistance Name distanceAsString];
    db=[db;F];
    save db.mat db 
catch
    db =[euclideanDistance Name distanceAsString];
    save db.mat db
end
end

Undefined function or variable 'Name'.

Error in Trianing (line 18) db =[euclideanDistance Name distanceAsString];

Answer 1

[Azzi Abdelmalek]

global Name;
clear all;
close all force;
prompt = 'Enter Name';
Name  = input(prompt)

You declare Name as global, then you clear all the variables, finally you ask to enter the variable Name. You have to remove the: clear all

[Ankit Singh]

But even after i declare global Name in another script it is showing error

[Image Analyst]

You have not read this and you really really need to.

[Ankit Singh]

Thank You Image Analyst,I studied this guideline and i will take care in future,I follow these guideline i will be more specific in title, full error detail

[Image Analyst]

So, you've accepted the answer but last thing you said was there it's still showing an error even after you removed the call to clear.

So, which is it? Is it solved or not?

[Ankit Singh]

yes it solved

[Image Analyst]

If it wasn't removing the clear, then what was the solution?

Answer 2

[Image Analyst]

You have

global Name;
clear all;

Now, the help says "A variable that is global, then clear removes it from the current workspace, but it remains in the global workspace". Now I think that's a little ambiguous - is Name there or not? When you recreate Name with a call to input():

Name  = input(prompt);

Is that a new local variable called Name, or is that the same Name in the global workspace again? I'm not sure. My guess is that it's a local variable that unfortunately now has the same name as the variable in the global workspace. But they're two different variables now. The best thing to do is (like Azzi said) to remove the call to clear.