Watch this Author's files
Ok, I solved it.
I had to use
sc_h = scatter(...)
although I confirm that the second way was alright also with previous Matlab versions (but not anymore).
Sorry for the double comment.
I'm having the same issue as Brad.
FreezeColors used to work with Matlab2009b and Matlab2011a, but now it works no more on the same code with Matlab2012a.
The line that makes my scatter plot disappear is