not enough input arguments( not what you think)

the function gets only one argument but it says not enough arguments ,

also its says x=x0 in line 6 but this specific data is not in line 6

what could be the problem?

function X_coordinate = beam(x0)

epsilon = 1e-4;
flag = 0;
counter = 0;
    q0 = 0.5
    L = 1000
    I = 351*10^6
    VIn = -0.5972
    E = 100
    x = x0;
while flag == 0
    %Check for infinite loop
    counter = counter + 1
    if counter > 10000;
        error('Too many iterations');
    end
    v = -(q0*L)/(3*pi^4*E*I)*(48*L^3*cos((pi*x)/(2*L))-48*L^3+3*pi^3*L*x^2-pi^3*x^3)
    v_d = -(q0*L)/(3*pi^4*E*I)*(-48*L^3*(pi/(2*L))*sin((pi*x)/(2*L))+6*pi^3*L*x-3*pi^3*x^2)
     x = x-v/v_d %solution 
    
    if abs(v/v_d) < epsilon || abs(v) < epsilon 
        flag = 1;
    end
end
X_coordinate = x;
if X_coordinate <=0
    error('No solution found,Please enter valid value')
else
    X_coordinate = x
end

Answer 1

[the cyclist]

How are you calling this function?

I put your function in a file named beam.m, then called it from the Command Window using

beam(1)

and the code ran just fine.

If I try to call it as

beam() % call without required input

then I get the error message:

Not enough input arguments.

Error in beam (line 11)

x = x0;

[Netanel Malihi]

i call it beam(500) and get not enough input arguments and also the i get the same error x=x0 but in line 6

how could it be ?

[Netanel Malihi]

thanks

Answer 2

[Jan]

"its says x=x0 in line 6 but this specific data is not in line 6"

This means, that you do not call the function you think you are calling. Maybe you did not save the file before calling it or you have multiple files with the same name. Check this by:

which beam -all

You can set a breakpoint in the code you think you are calling. Then you will see, if it is reached at all.

[Netanel Malihi]

thank you i found the problem.