Not enough input arguments error

Hello Guys, could anyone help me with this error? I have this code:

function [error,variance_theoritical,variance_practical,SQNR_theoritical,SQNR_practical]= quantizer(L)

x=2*9*rand(1,10000) -9;

maximum=max(x);

minimum=min(x);

delta=(maximum-minimum)/L;

range=maximum: delta: minimum;

qc=1;

error=0;

vc=1;

for k=1:1:length(range)-1;

averageOFrange=(range(k)+range(k+1))/2

k=k+1

end

avg=averageOFrange;

for i=1:1:length(x)

     z=x(i);

    for j=1:1:L-1

     if z>=avg(j) 

             Level=range(j+1);

               break

         elseif z<avg(j)

             Level=range(j);

             break

               Q(qc)=Level;

              qc=qc+1;

         end

   error=error+abs(z-Q(qc));

     VP(vc)= z-Q(qc);

    vc=vc+1;

     end

 variance_theoritical=delta*delta/12;

 SQNR_theoritical=9*9/variance_theoritical;

 end

 variance_practical=var(VP);

 SQNR_practical=9*9/variance_practical;

and when I run it, this error comes out:

Error using quantizer (line 6) Not enough input arguments.

Any help? Thanks a lot in advance

[Daniel Shub]

Please post the entire error message and the command you type that gives the error.

Answer 1

[Daniel Shub]

The error is not in quantizer function, but rather in how you are calling it. In line 6 of whatever function you are calling is something like

x = quantizer;

without any inputs to quantizer.

[LOLO93]

It points at the line: delta=(maximum-minimum)/L; I don't know what is the problem in here, I'm not calling quantizer or anything :/

[Thomas]

As Daniel pointed out, you cannot run a function that requires inputs, in this case L with out specifying it. Its giving. you an error in line 6 because it cannot find L

try calling the function like

 quantizer(20)  % where L=20

[LOLO93]

Oh I see, thanks a lot Thomas and Daniel, I really appreciate it :D

[LOLO93]

But I still don't know how to use the input if it will keep on giving me this error, I don't want to use a fixed number, it should be input by the user, you know? :/

[Walter Roberson]

Then have another routine that prompts the user for the number and then calls your quantizer routine.

[LOLO93]

How can I do this Walter? I've made another m-file called main quantizer and I put the level number as 2, but still, the error is persistent :(