how to get the last row of data of a time series when I dont know how many rows that time series has

Hello, so I have a simulink model that gives me various variables and one of them is a time series. Let's suppose that the variable name is R and I want to get the last row of its data, I know that the data has 9 columns but the number of rows is unkown, any idea how to get that last row of data?

I've tried getdatasamples(R,end) but it doesn't work. Thanks for the help

Answer 1

[Sulaymon Eshkabilov]

Hi,

Of course it is possible. Here are the answers step - by - step.

1) if you have an array saved under variable name R, then: >> R(end, :)

2) if you have one time series (signal) variable and your output variable in the workspace (e.g. it is called: Sout), then:

>> Sout.Data(end,:) % ==> would give you the last value of the collected signal from your simulink model.

3) If you have two time series signals saved under one variable name (e.g. Sout), then:

>> Sout.signal1.Data(end,:) %==> would give you the last value of the collected signal 1

>> Sout.signal2.Data(end,:) % ==> would give the last value from the signal 2

4) if you have saved your signals (e.g. one, two, three, four .... signals) as a structure variable with time series called STout, then:

>> STout.signals.values(end,:)

5) if you have saved your signals (e.g. one, tow, three, four, ... signals) as a structure variable called SSout, then

>> SSout.signals.values(end,:)

Good luck

[Morteza Ghafoori]

Much appreciated. That was very complete and detailed tutorial. Thanks!

Answer 2

[Sulaymon Eshkabilov]

Let's say you have saved your variable R data into MATLAB workspace, then to get the last row of R, this is the command:

R(end, :)

[Morteza Ghafoori]

That would work if the variable R was saved as an array in the workspace. But what if it was a time series? Is it even possible to get the last row of its data?