Unrecognized function or variable 'tankvolume'.

I keep receiving unrecognized function or variable 'tankvolume' when I call the function having R=0.9 and d=1 as arguments.

here is my code.

function Vol = tankvolume(R, d)
if d < R 
    Vol = pi * d ^ 3 / 3;
elseif d <= 3 * R 
    V1 = pi * R ^ 3 / 3; 
    V2 = pi * R ^ 2 * (d - R); 
    Vol = V1 + V2;
else 
    Vol = 'overtop';
end

[Davide Masiello]

I have saved the function on my pc and run it, there's no problem.

There could be several reasons why you're getting that error.

Maybe the function is not saved in the "current folder", or you might have mispelled the function name when calling it.

Answer 1

[KSSV]

It looks like either you are running the function using F5 key or run button. You need to save the function on the name tankvolume and keep in the present working directory, define your inpus and then call the function.

Or copy the below code into a script and run it.

R=0.9; d=1 

d = 1

v = tankvolume(R,d)

v = 1.0179

function Vol = tankvolume(R, d)
if d < R 
    Vol = pi * d ^ 3 / 3;
elseif d <= 3 * R 
    V1 = pi * R ^ 3 / 3; 
    V2 = pi * R ^ 2 * (d - R); 
    Vol = V1 + V2;
else 
    Vol = 'overtop';
end
end