Output argument "y" (and maybe others) not assigned during call

function y = ycal(x,x0,a)

gamma=0.021;

L=0.3*10^-2;

theta=0;

d=0.3*10^-3;

E=72*10^9;

I=3.976*10^-16;

A=2*gamma*cos(theta)*(2*a+d);

L1=x0;

offset=0.3*10^-3;

if(x<=L1)

y=(A/(E*I))*(x^3/6-(L1+a)*x^2/2)+offset;

elseif(L1<x&&x<=(L1+2*a))

T=(1+(L1)/2*a)/6;

U=(L1+a+(L1^2)/4*a)/2;

V=1/48*a;

W=L1^3/12*a;

X=L1^4/48*a;

y=(A/(E*I))*((x^3*T)-(x^2*U)-(x^4*V)+(x*W)-(1*X))+offset;

elseif((L1+2*a)<x&&x<=L)

Y=(L1^2+a*L1+(2/3)*a^2);

Z=((2/3)*L1^3+(2/3)*a^2*L1+(3/2)*a*L1^2+a^3/3);

y=(A/(E*I))*(-x*Y+Z)+offset

end

end

I'm getting this error"

Error in ycal (line 2)

gamma=0.021;

Output argument "y" (and maybe others) not assigned during call to "C:\Users\Admin\Documents\MATLAB\Proj\ycal.m>ycal"."

Could someone find the mistake please?

Answer 1

[Daniel M]

What is the function supposed to return for y = ycal(1,0,0)? It doesn't pass any of the conditionals in the if statement. And since there is no default value for y, it cannot assign an output for y. Therefore, you need to handle the default value for y, perhaps by putting:

else
  y = NaN;
end

Or something to that effect.

[Star Strider]

Assign ‘y’ first:

function y = ycal(x,x0,a)
y = NaN;
gamma=0.021;
... REST OF THE CODE ...
end