How to make two spaces a delimiter?

I have to have data delimited by two spaces ' ' and cannot use a tab. I tried to use this line of code...

dlmwrite(filename1,M,'-append','delimiter',' ');

but I get an error in my code that it is not a valid delimiter. Please help! Thanks!

Answer 1

[madhan ravi]

dlmwrite(filename1,M,'-append','delimiter','\t')