The function above cannot be permitted in the context!!! If it needs to create a function file to save it, how?

function ookd(g,f)
%For more information, visit: www.matpic.com
%Modulation  OOK
% Example:
% ookd([1 1 0 1 0],2)
%Author: Diego Orlando Barragn Guerrero
[e-mail]
%Loja (ECUADOR)
%Long Live Heavy-Metal
%See also:
%http://www.mathworks.com/matlabcentral/fileexchange/loadFile.do?objectId=14328&objectType=FILE
if nargin > 2
    error('Too many input arguments');
elseif nargin==1
    f=1;
end

if f<1;
    error('Frequency must be bigger than 1');
end

t=0:2*pi/99:2*pi;
cp=[];sp=[];
mod=[];mod1=[];bit=[];

for n=1:length(g);
    if g(n)==0;
        die=zeros(1,100);   %Modulante
        se=zeros(1,100);    %Seal
    else g(n)==1;
        die=ones(1,100);    %Modulante
        se=ones(1,100);     %Seal
    end
    c=sin(f*t);
    cp=[cp die];
    mod=[mod c];
    bit=[bit se];
end

ook=cp.*mod;
subplot(2,1,1);plot(bit,'LineWidth',1.5);grid on;
title('Binary Signal');
axis([0 100*length(g) -2.5 2.5]);

subplot(2,1,2);plot(ook,'LineWidth',1.5);grid on;
title('OOK modulation');
axis([0 100*length(g) -2.5 2.5]);

Answer 1

[Walter Roberson]

At the command line command

 edit ookd

In the edit box that comes up, paste in the code. Then use the file menu to Save the file.

[Alex Phang]

If I want do two different files (for example ookd.m and ooks.m), how do I call ookd.m into ooks.m?

[Walter Roberson]

In ooks.m you would add a line that looked similar to

ookd([1 1 0 1 0],2)

I am not sure what the numbers are intended to mean though.

[Alex Phang]

I had use the example of ookd([1 1 0 1 0],2), but it shows this error. I had no idea how to solve this even though I had try to use the set function.

Maximum recursion limit of 500 reached. Use set(0,'RecursionLimit',N)
to change the limit.  Be aware that exceeding your available stack space can
crash MATLAB and/or your computer.

[Walter Roberson]

You cannot call ookd within a file named ookd.m . You had said that the function was to be called within ooks.m

[Alex Phang]

The code for the file named ookd.m is shown as below:

function ookd(g,f)
if nargin > 2
    error('Too many input arguments');
elseif nargin==1
    f=1;
end
if f<1;
    error('Frequency must be bigger than 1');
end

The MATLAB shows :

The input arguement "f" is undefined.   
Error in ==> abc at 17
if f<1;

If I put the ookd([1 1 0 1 0],2) within that file, the maximum recursion limit problem occurs.

[Walter Roberson]

Do not put the

ookd([1 1 0 1 0],2)

inside ookd.m . Just put

ookd([1 1 0 1 0],2)

at the commmand line (or in a different file such as the ooks.m that you mentioned.)

[Alex Phang]

The error showns:

 The input arguement "f" is undefined.   
 Error in ==> abc at 17
 if f<1;

In order to not be confused, all the codes combine into one file named as ookd.m. When I run the codes above, where should I include the

 ookd([1 1 0 1 0],2)

[Walter Roberson]

If the code must be combined into a single file named ookd.m then put both of the following functions into ookd.m :

function ookd

     ookd_internal([1 1 0 1 0],2);

function ookd_internal(g,f)

    if nargin > 2
        error('Too many input arguments');
    elseif nargin==1
        f=1;
    end
    if f<1;
        error('Frequency must be bigger than 1');
    end

[Alex Phang]

Thanks pal, everything solved.