Why do I receive an error when I change tabs in the Signal Builder block after creating the block with multiple groups in Simulink 6.1 (R14SP1)?

I used the SIGNALBUILDER function in MATLAB to create a Signal Builder block in a new Simulink model. I specified the time and data values as an NxM cell array, where M is the number of different groups. One or more of the groups have time vectors that do not overlap with the first group's time vector. For example, I use the following code:

time = {[0 1 2 3 4 5 6],[20 21 22 23 24 25 26 27]; [0 1 2 3 4 5 6],[20 21 22 23 24 25 26 27]};

data = {rand(1,7), rand(1,8);rand(1,7),rand(1,8)};

SignalLabel={'data1','data2'};

GroupLabel={'Group1','Group2'};

MySignalBuilder = signalbuilder([],'CREATE',time ,data,SignalLabel,GroupLabel);

When I click on the 'Group2' tab in the Signal Builder block dialog, I receive the following error:

 ???  In an assignment  A(I) = B, the number of elements in B and

I must be the same.

 Error in ==> sigbuilder>rescale_axes_to_fit_data at 2204

              newYlim(2) = step*ceil(0.95*maxY/step);

 Error in ==> sigbuilder>dataSet_activate at 3337

         UD = rescale_axes_to_fit_data(UD,i,[],1,DO_FAST);

 Error in ==> sigbuilder at 197

         UD = dataSet_activate(UD,extra_args{:});

 Error in ==> sigbuilder_tabselector>activate_entry at 480

         sigbuilder('DSChange',figH,[],pressedIdx);

 Error in ==> sigbuilder_tabselector>mouse_handler at 155

         UD = activate_entry(UD,axesH,pressedIdx);

 Error in ==> sigbuilder_tabselector at 79

     UD = mouse_handler(action,axesH,UD,xpos);

 ??? Error while evaluating text ButtonDownFcn.

Answer 1

[MathWorks Support Team]

This bug has been fixed in Release 14 Service Pack 3 (R14SP3). For previous product releases, read below for any possible workarounds:

There is a bug in Simulink 6.1 (R14SP1) in the way that the SIGNALBUILDER function handles creating a new block with two groups whose time vectors do not overlap.

To work around this issue, create the Signal Builder block with one group and add the remaining groups to that block using the 'APPEND' flag as follows:

time1 ={[0 1 2 3 4 5 6];[0 1 2 3 4 5 6]};

data1 ={rand(1,7);rand(1,7)};

time2 ={[20 21 22 23 24 25 26 27];[20 21 22 23 24 25 26 27]};

data2 ={rand(1,8);rand(1,8)};

SignalLabel={'data1','data2'};

GroupLabel={'Group1','Group2'};

MySignalBuilder = signalbuilder([],'CREATE',time1,...

    data1,SignalLabel,GroupLabel{1});

MySignalBuilder = signalbuilder(MySignalBuilder,'APPEND',time2,...

    data2,SignalLabel,GroupLabel{2});