what is this symbol? looks empty but not.

I use command: [status,result] = system('arp -a') to get the IP address in my machine, then I want to organize these info into a cell format. but I found that, after I remove the empty cells, there are still some cells looks empty but not.

below is the test code:

    [status,result] = system('arp -a')
    test=regexp(result,' ','split');
    test=test(:);
    ept_sig=[];
sig=1;
for i=1:1:length(test)
   if isempty(test{i})
       ept_sig(sig)=i;
       sig=sig+1;
   end
end
test(ept_sig)=[];

there are some variables in the resulted 'test' that looks like empty, but not.

what is that, is there any way to remove them?

Thanks!

Yu

Answer 1

[Walter Roberson]

      test=regexp(result, '\s+','split');

In particular, you were dealing with newline and possibly carriage return as well.