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Sum subarrays of a Matrix.
One-liner transpose(reshape(sum(reshape(A',3,[])),3,[])) Or transpose(cell2mat(cellfun(@sum,mat2cell(A',[3,3,3],3),'unif',0))...

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Struct contents reference from a non-struct array object.
In your code, variable "filename" is a string. It does not have the structure field ".name". If your code looks like this, then...

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Simulink Clock (time) reset?
Feed Constant value 1 to an integrator, the output is the time. Wrap the state of the Integrator to 5400 and 0.

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Searching structure that has all caps field names with list that varies in case.
for iVar=1:numel(myVars) b_sp = b_struct.dArray.(upper(myVars{iVar})); end

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combine matrix in matlab
reshape([A;B],1,[])

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Variables scope in MatLab function block
Use "Edit Data" in the MATLAB Function Editor to specify those base workspace variables as the parameters

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Naming Excel Sheet with xlswrite.
FileName=['Rule',num2str(x)] FileName=sprintf('Rule%d',x)

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Why, when doing a for loop to form a column from an array, does it give me 0 values except for the last element?
most likely, change to Lo(I+3*(Q-1),1)=IncECEF(Q,I) And do you know this? A=magic(5); B=A' C=B(:)

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How to plot two arrays which different time stamps and lengths in one plot?
%% A=[0.1 0.2 0.35 0.42]; B=[1 4 9 12]; C=[0.01 0.4 0.5 0.8 1 2 10]; D=[5 7 10 11 12 3 1]; [x,index]=sort([A,C]); y=[B,D...

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How to update new annotations or descriptions done in a library subsystem into the model where the library is used
To be clear, the annotation needs to be inside a subsystem block in the library. Then after you updated the annotation in the li...

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issues connecting my from workshop block to the PSS and SPS Converter block
In your diagram with error red line, on the top left, you need a Simulink to Physical System converter, not Physical System to S...

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How to plot two different 3D graphics together?
The command "figure" creates a new figure. Use just one of them, and run "hold on".

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How many Workspace's we have in MATLAB ?
Another common one is the function workspace, which is created when the function is entered and destroyed when the function is e...

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extracting values from a matrix or vector
b=a([2,5]), second and fifth element

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If statements comparing two character strings with multiple inputs
variable 'str1' and 'str2' are supposed to take values from function input arguments when you call h20_props(50,"nu","SI"). But ...

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How to get the string form of an anonymous function?
f = @(x) exp(-0.5*x); >> func2str(f) ans = '@(x)exp(-0.5*x)' Or, provide your string, use str2func()

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How to determine the moment (time) at which the signal exceeded the set value in simulink?
Assume you build your model correctly, your signal varies as time goes. Compare your signal with the Constant value, its output ...

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How to change Simulink model line thikness
No. You can't. Simulink is a graphical modeling tool, but not a graph tool. Use something else such as Visio, or Shapes in MS Of...

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Add one port to a Simulink block, from command line AND automaticaly keep the same distance between ports
I dealt with this problem before. There is no quick or automatic way but the following method worked for me to keep the existing...

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Operator '==' is not supported for operands of type 'tf'
The reason: When you click "cancel" in the inputdlg(), your variable "tf" is not evaluated. When the second part of the code i...

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why do i get the error 'undefined function or variable ' for simin from workspace
When you use "From Workspace" block, it expects the variable "simin" exists in the base workspace. Create that variable to elimi...

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Transform a matrix in a special way
B=zeros(5); B(tril(true(5),-1))=A B=B'

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Coding philosophy : Is using global goto like using a global variable?
The simple answer is YES. What you see in C code is a code flow. The code is executed in sequence. What you see in Simulink is...

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Is there a way to limit automatic Y or X axis scaling?
ylim('auto')

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Loading a fig file without opening
f=openfig('power.fig','invisible') a=get(f,'Children') ... close(f) clear f

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Is there a way to define a new built-in function?
I would think NO but it does not really make any difference. If there is a way, you would have to modify some existing files in ...

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why do my output variables not update when I use the sim function
Here it goes again. Please see this. Mathworkers need to pay attention to this. This trap seems unreasonable. https://www.mathw...

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Sample Time and simOut Interaction
Usually it is because the fixed step size is too big for the model to simulate accurately. There are many solution to this. The...

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Simulink menu bar is missing Matlab R2020b,academic use
If you are taking about the conventional "File", "Edit" menu, yes, they are long gone. It is mapped to "Simulink Toolstrip" Lo...

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Create a value map from input signal in a Simulink block
1-D Lookup Table

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