function sf =aaa(u) | Error: Function definitions are not permitted in this context.

%Matlab Code to generate Switching functions

% Inputs are magnitude u1(:),angle u2(:)

% and ramp time signal for comparison u3(:)

function sf =aaa(u)

ts=0.0002;vdc=1;peak_phase_max= vdc/sqrt(3);

x=u(2); y=u(3); mag=(u(1)/peak_phase_max) * ts;

%sector I

 if (x>=0) & (x<pi/3)   ta = mag * sin(pi/3-x);tb = mag * sin(x);  t0 =(ts-ta-tb);

t1=[t0/4 ta/2 tb/2 t0/2 tb/2 ta/2 t0/4];t1=cumsum(t1);

v1=[0 1 1 1 1 1 0];v2=[0 0 1 1 1 0 0];v3=[0 0 0 1 0 0 0];

for j=1:7

if(y<t1(j))

break

end

end

sa=v1(j);sb=v2(j);sc=v3(j);

end

% sector II

 if (x>=pi/3) & (x<2*pi/3)  adv= x-pi/3;

tb = mag * sin(pi/3-adv);ta = mag * sin(adv);

t0 =(ts-ta-tb);

t1=[t0/4 ta/2 tb/2 t0/2 tb/2 ta/2 t0/4];t1=cumsum(t1);

v1=[0 0 1 1 1 0 0];v2=[0 1 1 1 1 1 0];v3=[0 0 0 1 0 0 0];

for j=1:7

 if(y<t1(j)) 

 break 

 end

end

sa=v1(j);sb=v2(j);sc=v3(j);

end

%sector III

 if (x>=2*pi/3) & (x<pi)  adv=x-2*pi/3;

ta = mag * sin(pi/3-adv);tb = mag * sin(adv);

t0 =(ts-ta-tb);

t1=[t0/4 ta/2 tb/2 t0/2 tb/2 ta/2 t0/4];t1=cumsum(t1);

v1=[0 0 0 1 0 0 0];v2=[0 1 1 1 1 1 0];v3=[0 0 1 1 1 0 0];

for j=1:7

 if(y<t1(j))

 break 

 end

end

sa=v1(j);sb=v2(j);sc=v3(j);

end

%sector IV

 if (x>=-pi) & (x<-2*pi/3)  adv = x + pi;

tb= mag * sin(pi/3 - adv);ta = mag * sin(adv);

t0 =(ts-ta-tb);

t1=[t0/4 ta/2 tb/2 t0/2 tb/2 ta/2 t0/4];t1=cumsum(t1);

v1=[0 0 0 1 0 0 0];v2=[0 0 1 1 1 0 0];v3=[0 1 1 1 1 1 0];

for j=1:7

 if(y<t1(j)) 

 break  
 end

end

 sa=v1(j);sb=v2(j);sc=v3(j);  end

% sector V

 if (x>=-2*pi/3) & (x<-pi/3)  adv = x+2*pi/3;

ta = mag * sin(pi/3-adv);tb = mag * sin(adv);

t0 =(ts-ta-tb); t1=[t0/4 ta/2 tb/2 t0/2 tb/2 ta/2 t0/4];t1=cumsum(t1);

v1=[0 0 1 1 1 0 0];v2=[0 0 0 1 0 0 0];v3=[0 1 1 1 1 1 0];

for j=1:7 if(y<t1(j)) break end

end sa=v1(j);sb=v2(j);sc=v3(j);

end

%Sector VI

 if (x>=-pi/3) & (x<0)  adv = x+pi/3;

tb = mag * sin(pi/3-adv);ta = mag * sin(adv);

t0 =(ts-ta-tb);

t1=[t0/4 ta/2 tb/2 t0/2 tb/2 ta/2 t0/4];t1=cumsum(t1);

v1=[0 1 1 1 1 1 0];v2=[0 0 0 1 0 0 0];v3=[0 0 1 1 1 0 0];

for j=1:7

 if(y<t1(j)) 
 break 
end 

 sa=v1(j);sb=v2(j);sc=v3(j);  
end 
 end

sf=[sa, sb, sc];

Answer 1

[Star Strider]

You are only allowed to have a function statement (except for anonymous and inline functions) inside another function file so:

function x = fun(y)
        .
        .
    function sf =aaa(u)
        .
        .
    end
end

is permitted, but

first line of my script file
          .
          .
      function sf =aaa(u)
          .
          .
      end

is not.