index of out of bounds from txt

Guys, i simplified the problem The code is:

    name=['r9460.txt']
    fid=fopen(name,'r');
while ~(feof(fid)),
  head=fscanf(fid,'%d',11)
  if ~(isempty(head)),
    m=head(4)
  end
end
fclose(fid)

The txt is

    5  1994     4   8       9  14  40       0  31  16        5
            0.6            1
            0.6           25
            0.9            1
            3.5            4
            0.9            1
Matlab says Attempted to access head(4); index out of bounds because numel(head)=1.

Please, help me, i'm in your hands!

Answer 1

[Andy]

Hi Nicola,

head=fscanf(fid,'%d',11)

you are constantly changing the value of head, not incrementing it. Try: -

fid=fopen(name,'r');
x=1;
while ~(feof(fid)),
head(x)=fscanf(fid,'%d',11)
x=x+1;
if ~(isempty(head)),
  m=head(4)
end
end
fclose(fid)