MATLAB: Getting error of Double

function

This is portion of my code
function [dtmf]=dtmfdial(x,fs);
%This function produces DTMF Tone  corresponding to given 
%key number
%abcdefg=input key numbers
%fs= The sampling frequency
lfg = [697 770 852 941]; % Low frequency group
hfg = [1209 1336 1477];  % High frequency group
f  = [];
for c=1:4,
  for r=1:3,
      f = [ f [lfg(c);hfg(r)] ];
  end
end
table=f';
dur=.5;
tt=0:(1/fs):dur;
n=length(x);
C=cell(1,length(x));
for k=1:n
    if x(k)==1
        freqa=table(1,1);
        freqb=table(1,2);
    else if x(k)==2
        freqa=table(2,1);
        freqb=table(2,2);
and so on
When i run this function i get this error
>> dtmf=dtmfdial([1 2 3 4 5 6 7],8000)
??? Undefined function or method 'dtmfdial' for input arguments of type 'double'.

Best Answer

Hi, are you actually assigning anything to dtmf inside your function?
For example, if you wrote a function
function test = test_func(x)
test1 = x+1;
And called that function at the command line:
y = test_func(4);
You would get that error message, because you assign the output to test1 inside the function, but the function is set up to return test.
Related Question