How to write in a file, a random string from a cell ?

HI, I would like to know how to solve this: The fprintf doesn't work because of variable conn referring to a cell.

Connect = {'A','I','O'}; 

r = randi(3); 

strength = randi(10); 

conn = Connect(r);

dir_file = '\..my path..\'; % you should change this to your path

fid = fopen(dir_file, 'a'); 

fprintf(fid,'%s %s %s\n', num2str(Neighboor), conn, num2str(strength));

% fprintf doesn t work here because of conn referring to a cell

What can I do ??

Answer 1

[Kirby Fears]

Joel,

As the error indicates, fprintf() does not accept cell inputs. The conn variable is a 1x1 cell while the other inputs are strings.

You can make "conn" a string by extracting the cell contents instead of setting conn equal to a 1x1 cell.

Just change:

conn = Connect(r);

Into:

conn = Connect{r};

The curly braces indicate content extraction from the r'th cell of Connect instead of assigning conn to the r'th cell itself.

Hope this helps.

[Joel Sande]

Thanks a lot !! it works