Simulink to workspace doesn't work

My Simulink file was like that and when i want to plot the results it doesnt work

%file is untitled2.m 
Mp =10; 
Mj=60;
Bp = 100; 
Bj = 10; 
KR = 400; 
sim('parachute')
subplot(4,1,1) 
plot(out.Time,out.xj,out.Time,out.xp,'--') 
subplot(4,1,2) 
plot(out.Time,out.vj,out.Time,out.vp,'--') 
subplot(4,1,3) 
plot(out.Time,out.aj) 
subplot(4,1,4) 
plot(out.Time,out.delx)

Output workspace is like that:

How can i fix that? Thanks.

Answer 1

[madhan ravi]

Double click To workspace block. Select the "Save Format" as Array.

By the way, the one you have is timeseries.

You can simply plot by doing:

 plot(out.vj) % for example , you don’t need to mention time as it’s understood it has time data within as it’s timeseries

[Mustafa Duran]

Thanks a lot, it worked. I have one question too. How can i set the time?

[madhan ravi]

Time is already integrated in timeseries. The above command is similar to doing

plot(out.vj.Time, out.vj.Data) 
% when out.vj data format is Timeseries , that"s the advantage of Timeseries

When you have time, please have a look at Simulink Data Inspector. It is helpful in visualising signal without having to import to MATLAB and plotting it again just only by logging signals in Simulink.

Answer 2

[Walter Roberson]

Turn off Single Simulation Output; https://www.mathworks.com/help/simulink/gui/singlesimulationoutput.html

[Mustafa Duran]

I closed that:

Mp=10; 
Bp = 100; 
Mj=60; 
Bj = 10;
KR = 400; 
sim('parachute') 
subplot(4,1,1) 
plot(t,xj,t,xp,'--') 
subplot(4,1,2) 
plot(t,vj,t,vp,'--') 
subplot(4,1,3) 
plot(t,aj) 
subplot(4,1,4) 
plot(t,delx) 

It still doesn't work and error is like:

!! Error using plot

Data must be numeric, datetime, duration, categorical, or an array convertible to double.

Error in timeseries/plot (line 143)

p = plot(ax,Time,Data,varargin{:});

Error in parachute (line 9)

plot(t,xj,t,xp,'--')

[madhan ravi]

See my answer above for the data format I mentioned.

[Walter Roberson]

What gets stored at the MATLAB level is likely going to be a time series .