# HG changeset patch
# User paramaniac
# Date 1331142692 0
# Node ID f0001b666a66f89a22166fecf749b5a23c60e9f5
# Parent  e29c0c3766b8f0a47289cd5cb9cee61ad5c52421
control-devel: replace [] by {} to simplify code in cat :-)

diff -r e29c0c3766b8 -r f0001b666a66 extra/control-devel/inst/@iddata/cat.m
--- a/extra/control-devel/inst/@iddata/cat.m	Wed Mar 07 17:40:03 2012 +0000
+++ b/extra/control-devel/inst/@iddata/cat.m	Wed Mar 07 17:51:32 2012 +0000
@@ -36,25 +36,15 @@
       check_inputs (tmp, m);
     
       y = cellfun (@vertcat, tmp.y, "uniformoutput", false);
-
-      if (m{1} > 0)                                     # m(2:end) are equal, tested by check_inputs
-        u = cellfun (@vertcat, tmp.u, "uniformoutput", false);
-      else                                              # time series don't have inputs
-        u = [];
-      endif
+      u = cellfun (@vertcat, tmp.u, "uniformoutput", false);
     
     case 2                                              # horzcat - catenate channels
       check_experiments (tmp, e);
       check_samples (n);
 
       y = cellfun (@horzcat, tmp.y, "uniformoutput", false);
-      
-      if (m{1} > 0)
-        u = cellfun (@horzcat, tmp.u, "uniformoutput", false);
-      else
-        u = [];
-      endif
-    
+      u = cellfun (@horzcat, tmp.u, "uniformoutput", false);
+
     case 3                                              # merge - catenate experiments
       check_outputs (tmp, p);
       check_inputs (tmp, m);
diff -r e29c0c3766b8 -r f0001b666a66 extra/control-devel/inst/@iddata/iddata.m
--- a/extra/control-devel/inst/@iddata/iddata.m	Wed Mar 07 17:40:03 2012 +0000
+++ b/extra/control-devel/inst/@iddata/iddata.m	Wed Mar 07 17:51:32 2012 +0000
@@ -56,7 +56,7 @@
 ## Created: October 2011
 ## Version: 0.1
 
-function dat = iddata (y = [], u = [], tsam = [], varargin)
+function dat = iddata (y = {}, u = {}, tsam = {}, varargin)
 
   if (nargin == 1 && isa (y, "iddata"))
     dat = y;
diff -r e29c0c3766b8 -r f0001b666a66 extra/control-devel/inst/__adjust_iddata__.m
--- a/extra/control-devel/inst/__adjust_iddata__.m	Wed Mar 07 17:40:03 2012 +0000
+++ b/extra/control-devel/inst/__adjust_iddata__.m	Wed Mar 07 17:51:32 2012 +0000
@@ -28,7 +28,7 @@
   endif
   
   if (isempty (u))
-    u = [];     # avoid [](nx0) and the like
+    u = {};     # avoid [](nx0) and the like
   elseif (iscell (u))
     u = reshape (u, [], 1);
   else