Why is 'From Workspace' omitting values (R2011a)?

My simulink model contains a From Workspace block directly feeding a To Workspace block.

The From Workspace block is reading the Structure Input :

Input.time = (0.00 : 0.01 : 100)';
Input.signals.values = zeros(1,10001)';
for k = (0:9)
    Input.signals.values(k*1000+500) = 1;
end
Input.signals.dimensions = 1;

The sampling time of the 'From Workspace' block is set to 0.01 as well as the 'Fixed-step size' of the model. The Interpolate data option of the From Workspace block is unchecked. Executing the model results in a Structure with Time Output written to the workspace by the To Workspace block.

I'd expect Output.signals.values to look exactly the same as Input.signals.values . However, Output.signals.values(6500) delivers 0 wheras Input.signals.values(6500) delivers 1.

If I check the Interpolate data option of the From Workspace block, then everything works as expected. But there should be no interpolation needed as Input.signals.values contains a value for every timestep, right?

Is there a bug in From Workspace or do I misunderstand the interaction of sample time and model-execution in fixed step size?

Answer 1

[Jochen]

I found the right answer for my question myself :)

Solution