unable to store data from file into array in matlab

Question

i am trying to fetch integer value stored in result_cluster.txt and trying to store into an array

aiclu(i,1)=a;

but I'm not getting the desired result. Instead a value of 0 is stored in the array. Here's my code:

fid20=fopen('result_cluster.txt','r');
i=1;
k=1;
aclu_end=zeros(11,1);
aiclu=zeros(962,1);

while(~feof(fid20))

   a=fscanf(fid20,'%d',1);
   disp(a); 
   disp(i);

   aiclu(i,1)=a; 
   i=i+1;

   disp(aiclu(i,1));
   if a==32
     aclu_end(k,1)=i;

     disp('hello');
     disp(aclu_end(k,1));
     k=k+1;
   end    
end
fclose(fid20);

result_cluster.txt

I get this output:

disp(a) = 2
disp(i) = 1

For aiclu(i,1)=a; I get this error: "??? Subscripted assignment dimension mismatch."

Are you sure that a is a single value and not a vector? a being a vector would cause that error. — David K
– David K, Commented May 15, 2013 at 20:14

Schorsch · Accepted Answer · 2013-05-15 20:39:41Z

2

Your issue is in line 14 of your code above. You increment i - and then display it. So while you store the value of a in aiclu(i,1), you are actually displaying aiclu(i+1,1).
Your code runs fine when I try it and your error doesn't occur until the end of the file - so the condition for your while-loop is inadequate.

Edit

If you run your code in the Matlab debugger, you'll notice that the last value for a is an empty vector:

a = []

This cannot be assigned to aiclu.

edited May 15, 2013 at 20:39

answered May 15, 2013 at 20:28

Schorsch

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1 Comment

Schorsch Over a year ago

@tabish : Please consider accepting this answer by clicking the checkmark (✓) next to the voting buttons or comment on what doesn't work for you.

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