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Voltooid
another case of undocumented syntax
from Version History:
...
[US,TS, Success] = ordschur(...) % three-outputs, with status as last one.
Note:
ORDQZ has the same peculiarity - see GCARE or GDARE code:
[HH,JJ,~,z(perm,:),Success] = ordqz(HH,JJ,q,z,'lhp') % five outputs
Customer support service by UserEcho
Yes, absolutely! Just forgot to add it to the list.
Actually I saw the syntax in GCARE too :).
Not sure if I get the meaning of the output - how re-ordering could fail? Probably will just return 1.
It is useless, of course, but it is a relic from another time ... :)
Prior, to make it working, I used:
[z(perm,:),t] = ordschur(z,t,'lhp'); Success = 1;
Actually it might indicate few things (in case of ordqz) - problem is too ill-conditioned and transformed matrices might be too far from generalized Schur or just indicate wrong inputs (mismatching matrix dims or else). In any case toolbox will just return 1 in case of extra output parameters.
I sent to you by email a piece of reference from Matlab's childhood
Thank you for reminding, I almost forget to add this to toolbox - will add right now.
Undocumented syntax has been implemented for both routines, ordqz and ordschur (in trunk).