facing error to execute

a=[1 2 3 4];
b = vsum(a);
disp(b);
function y = vsum(x)
y = sum(x,'all');
end

I am facing below error

Error using sum

Invalid option. Option must be 'double', 'native', 'default', 'omitnan' or 'includenan'.

Error in vecadd>vsum (line 5)

y = sum(x,'all');

Error in vecadd (line 2)

b = vsum(a);

Answer 1

[Image Analyst]

I don't believe the 'all' option had been introduced in your r2016b version. Can you upgrade to the latest version. Or else do

y = sum(x(:));

[Urvashi]

it's still not working

[Image Analyst]

It does for me:

a=[1 2 3 4];
b = vsum(a);
disp(b);

    10

function y = vsum(x)
y = sum(x(:));
end

So you didn't do what I said. Attach what you actually did so we can correct it.

[Urvashi]

a=[1 2 3 4];

b = vsum(a);

disp(b);

function y = vsum(x)

y = sum(x,(:));

end

error

Error: File: vecadd.m Line: 5 Column: 15

Unexpected MATLAB operator.

[Image Analyst]

Why did you put a comma after the x? I did not say to do that.

You did

y = sum(x,(:));

while I said to do

y = sum(x(:));