I plotted a signal using "To Workspace" in Simulink Matlab. Now I want to take the mean of the specific part of that signal which I plotted.How can I extract values from "To Workspace" or how can I take the mean of the specific area of that graph.
In "To workspace" you define a variable name, let's say: "simout"
I made a simple simulink as the following:
you can save with different formats: Timeseries, Structure with time, Structure, Array.
Then, when you run the simulink, it will save the variable in the worksapce as a structure.
Then you can use the variable to plot the data inside. check this example :
consider you saved using Structure with time you can get data like this:
t = simout.time
x = simout.signals.values
and you can plot the data:
plot(t,x)
Related
This is a fairly simple thing I think, but I cannot seem to get the right output that Im looking for. I am using matrices to represent state space models in simulink, and I am trying to get my states output to the workspace,
it is a simple 4x1 vector, and I tried just using the regular "to workspace" block, but it seems it concats to either a 2d or 3d vector..
I want to have a tx4 matrix output that I can reference the first state and plot for all simulation time(t) like x(:,1), the second state x(:,2) etc...
You can set a save format in a To Workspace block. Default this is set to timeseries, but you can set it to Array.
Looking at the doc for the Array setting:
If the input signal is a scalar or a vector, each input sample is output as a row of the array. Suppose that the name of the output array is simout. Then, simout(1,:) corresponds to the first sample, simout(2,:) corresponds to the second sample, and so on.
You want the first dimension not to be time, but your state vector, so transposing simout should do the trick.
simout = simout.'; % or tranpose(simout);
I configured the data from Simulink to be saved as Structure with time on workspace, but I'm getting an error when I try to plot the variable.
plot(X.time, X.signals.values)
X is how I named the scope data.
And this is the error I get
Error using plot
Data must be a single matrix Y or a list of pairs X,Y.
Is there some other configuration I should make on Simulink for this to work?
I have the 2017 version of Matlab
The image below is the quadrotor model in simulink, now it's following a path made of sine waves for x and y.
If I want the quadrotor to follow a path made of predefined x,y,z values, how can I specify that?
The most logical way to do this is to create an arbitrary timeseries variable in MATLAB and then use it as an input in Simulink using a "Read data from workspace" block
I want a trajectory to be created in MATLAB, but I am unable to find how can I make this function continuous.The function is
fsg=abs((sign(t-a)-sign(t-b))/2), and the trajectories are x=t.*fsg(t,0,20)+20.*fsg(t,20,40)+(60-t).*fsg(t,40,60)
, y=(t-20).*fsg(t,20,40)+ 20.*fsg(t,40,60)
and
z=0
How can I create it, because my model is continuous and I want to give continuous input to it. What i had done is: I created fsg function in MATLAB and created time t=[0:.1:80]. Then, I calculated x,y,z and then created a timeseries variant of these to give them as input to my model.
Is it somehow possible to get signal data from figure, to save the vector or matrix of the data to the Workspace?
We happend to make a lots of measurements on a real system in school, but ve saved only figures of the measutrement and now we need to use some of the signals from the figure and use them in another figure for comparison.
You can load the figure in Matlab and go to View->Properties, to pull the data out of the plot's properties e.g. for a line graph plot:
You can get at the XData and YData properties and copy/paste the values of out it e.g.
Alternatively, as I had to do once when this method failed, you can save the figure as EPS/postscript and try to pull the data out of the postscript file in a text editor (!)