Read-only matlab files of Dynare 4.4.3 for Mac

I use Dynare 4.4.3 for Mac OS X. As I want to do IRFs to 1% shocks, I need to
put “options_.relative_irf=1;” before the estimation, then modify a line in
the file: dynare/4.4.3/Matlab/PosteriorIRF_core1.m, but this file is read only,
and doesn’t allow me to make the change. However, my co-author, who is
using Dynare 4.4.3 for Windows does not have this problem.

Can anyone have any idea how to resolve this issue? Many thanks!

You have several options:

Option 1
[ul]]Download the source code from here: … RF_core1.m/:m]]Make the changes you want and drop it in /Applications/Dynare/4.4.3/matlab/:m][/ul]

Option 2
[ul]]Open Terminal (/Applications/Utilities/Terminal)/:m]]Type:chmod a+w /Applications/Dynare/4.4.3/matlab/PosteriorIRF_core1.m/:m]]Then edit it as usual/:m][/ul]

In any event, it would be helpful to me if you:
[ul]]Open Terminal (/Applications/Utilities/Terminal)/:m]]Type:ls -la /Applications/Dynare/4.4.3/matlab/PosteriorIRF_core1.m/:m]]Send me the output/:m][/ul]