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# Babak

### University of Sothern California

Actif depuis 2012

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Question

How to generate code for a model with tunable parameter avoiding an algebraic loop?
How can one generate C code for the attached model? Parameter Td needs to be tunable ion the generated code. Simulink compla...

plus de 8 ans il y a | 1 réponse | 0

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réponse

Question

When will MATLAB 2014b release?
I noticed that in the past few years the "b" versions were released almost all in early September but this year it looks like it...

plus de 8 ans il y a | 5 réponses | 1

### 5

réponses

A répondu
Clean variables of worskpace from GUIDE
You can send commands to base workspace using the evalin() function as you mentioned. For example you can say: evalin('base'...

presque 10 ans il y a | 0

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From cartesian to polar with points
vectors = V(2:2:end) - V(1:2:end); % vector has half the size(1) of V X = vector(:,1); Y = vector(:,2); [THETA,RHO]...

environ 10 ans il y a | 0

A répondu
saveas command saves plot with black background and no axis lables
if your platform is windows go to display settings for the screen and change to a "classic view".

environ 10 ans il y a | 0

A répondu
Help with errors - Unable to meet integration tolerances, Time integration failed, Attempted to access u(5), index out of bounds because numel (u)=4
As far as for a PDE, if you want to make sure that this singularity is something related to your numerical integration method or...

environ 10 ans il y a | 0

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Simulink bloc to check if a condition is true during a period of time
You can use a *"Weighted Sample Time"* block to know what's the sampling time and an *"If"* block to create a condition. If y...

environ 10 ans il y a | 0

A répondu
GUI throws error: Attempt to reference field of non-structure array.
You are probably trying to use, handles.something where you have not previously defined it in the callback function or ...

environ 10 ans il y a | 0

A répondu
How to set Matlab do display all calculation results?
When the plotted data does not correspond to the whole "time span", it is usually because of that the time span is too large in ...

environ 10 ans il y a | 0

A répondu
who knows how to convert double to cell so i can get a 2D plot ?
mat2cell() cell2mat()

environ 10 ans il y a | 0

A répondu
In Simulink, equations are integrated in time. Your system doesn't seem to have governing (continuous or discrete) equations, in...

environ 10 ans il y a | 0

A répondu
How I can generate a continuous signal using a solver with fixed step size?
You need to let your tmax be 0.4 and solve then discard the data for 0.3<t<0.4

environ 10 ans il y a | 0

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How do I add 2 Y axis to my MATLAB Plot?
Look up plotyy() in the documentation.

environ 10 ans il y a | 0

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GUI Push button Help !
Open your GUI figure file by right clicking on its name in the MATLAB current folder window and choosing GUIDE. Find the push...

environ 10 ans il y a | 0

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A répondu
ode45 - Does matlab keep track of derivatives which can be recalled?
Re-formulate your equations from x_dot = f(t,x,x_dot) to g(t,x,x_dot) = f(t,x,x_dot) - x_dot = 0 and then use ...

environ 10 ans il y a | 0

| A accepté

A répondu
How to resolve "Conversion to double from cell is not possible."
use cell2mat()

environ 10 ans il y a | 6

A répondu
Multi Dimensional Cell Array
maxsize1 = 100; maxsize2 = 100; maxsize3 = 100; mycell = cell(maxsize1 ,maxsize2 ,maxsize3 ); mycell{1,1,1} = A1; ...

environ 10 ans il y a | 0

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how Can I Know that two Blocs were connected in the same subsystem?
Use get_param to get the parameter of the two blocks. Find out the lines connected to the two blocks with get_param . ...

environ 10 ans il y a | 0

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Calling a function f inside f,how can we do this
Just as a side issue: You better change the name of the function from a one letter name "f" to at least a 2 letter name. I remem...

environ 10 ans il y a | 0

Question

supporting cells for code generation
Do MATLAB compiler and MATLAB Builder NE support cell type variables? I'm asking because I just found out MATLAB coder does...

environ 10 ans il y a | 1 réponse | 0

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A répondu
Adding up words in matrices on Matlab
b = {'Hello' 'my' 'name' 'is' 'kevin' 'Susan'}; a = strsplit('kevin, kevin my baby I am telling you Hello Hello my name is ...

environ 10 ans il y a | 0

A répondu
Movefile access is denied error
MATLAB has opened to write to file and hasn't closed them... Exit MATLAB then try moving/deleting the files.

environ 10 ans il y a | 0

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I want to know how to convert these lines of code into c
Use MATLAB coder to convert matlab code into C code.

environ 10 ans il y a | 0

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set_param Command calls OpeningFcn
If the GUI is not open, as soon as you call to open it, the OpeningFcn runs. Now its up to you what to put in the Opening Fcn. Y...

environ 10 ans il y a | 0

A répondu
tic toc in a GUI
tic toc gives you the total elapsed amount of time. There is no such meaning of all the instances... you cannot save time instan...

environ 10 ans il y a | 0

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How can I get the value from an inner callback function to an outer function?
assigin('caller','a',20) creates a parameter a in the caller function and assigns 20 to it. assigin('base','a',20) do...

environ 10 ans il y a | 0

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Vectorizing inside a loop
The problem with matrix(i:n:end,4:6)=y(i,:)-matrix(i,1:3); is that the first index i:n:end is a vector and does not cor...

environ 10 ans il y a | 0

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how matlab calculate the sqrt of complex number?
usually powers of between 0 and 1 of complex numbers have multiple answers! As an example, (-3-6i)^(1/2) [THETA,RHO] = ...

environ 10 ans il y a | 0

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Is it possible to terminate ode45 once a certain condition is met during integration?
to stop the integration you need to define an "event" function. Loop up ODE45 documentation and see how you can define the event...

environ 10 ans il y a | 0

A répondu
Delete double cell array entries
CellArray={[1 2 3] [1 2] [3 5 6 7] [1 2] [2 4] }; NewCellArray = [CellArray(1:3) CellArray(5)];

environ 10 ans il y a | 0