please help

how can I extract a sample value from a signal in simulink? for example the last sample of a sine function block. can it be done using selector block?

Answer 1

[Kaustubha Govind]

If the signal is a vector, then yes, you can use the Select block to pick any element of that vector.

[saima]

i tried, but error was thrown saying,"Error in port widths or dimensions. Output port 1 of 'simul/Sine Wave1' is a [1x1] matrix."

can you suggest any elaborate explanation please?

[K E]

You might try Guy Rouleau's debugging suggestion in this answer

[Kaustubha Govind]

saima: Like I said, your signal needs to be a vector to be able to use a Selector block. It's acts as if you are indexing into it. For example:

a = [1 2 3];

b = a(3); %This is the type of operation that Selector does

It looks like what you trying to do is get just the sample at t=FinalSimulationTime. Is that correct? Could you explain what you plan to do with this value - will it be used in MATLAB or somewhere else in the model?