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Constructing full matrix like a sparse one
It doesn't have exactly the same syntax as the sparse function, but I'd recommend you look at the accumarray function.

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How to find the linear slope of a set of data points on a graph
T=[0 0.250000000000000 1.14000000000000 2.33000000000000 3.58000000000000 4.76000000000000 5.15000000000000 5.58000000000...

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Why won't parallel pool start under MCR r2022b?
Can you confirm that you've included the cluster profile in your application? See this documentation page for more information. ...

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How to prove that a destructor must be defined for the Value classes
The book tell me that Handle classes has build-in Destructor function. Which book is that? Are you referring to the documentati...

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How to estimate how long the inversion process will take?
syms ksm ksn ksl wsm wsn wsl Delsm Delsn Delsl DelT m Delgx Delgy Delgz dx syms tilda_Xu ro tilda_Xv qo tilda_Xw tilda_Xp wo ti...

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There is superclass problem even if I don't have that superclass in MATLAB
What changes did you make to the app between the last time you were able to launch the app and the first time it failed? Did you...

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Check for incorrect argument data type or missing argument in call to function 'isShapeOnXY'
Please set an error breakpoint then run your code. When you receive the error run the following commands and show us the output....

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i want to get adjacency matrix of a network
If you want to generate both the graph object and its adjacency matrix, tell MATLAB to build the graph using just the upper tria...

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Why classes need 'InferiorClasses' to determine which method to call when multiple classes have the same method
There are several different reasons. The first is that not all of our users are familiar with or comfortable using the object.me...

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wordEmbeddingLayers() available in Deep Learning Toolbox?
The wordEmbeddingLayer class is part of Text Analytics Toolbox and was introduced in release R2018b. Perhaps that blog post sho...

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I am trying to write a Matlab program that calculates the average and standard deviation of scores given and determines the letter grade
There are three main problems in your code. Sc=[72, 81, 44, 68, 90,53, 80, 75, 74, 65, 50, 92, 85, 69, 41, 73, 70, 86, 61, 65, ...

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How to monitor a variables that is outside of a function
Functions operate in their own workspaces. The variable named aValue in the workspace of the caller of assignVar is not in the w...

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How to create a pivot table from a generated plot (data comes from an Excel sheet)
If upgrading from R2020b is an option, release R2023a introduced the pivot function for creating a pivot table. If you want to ...

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ga problem of function state
Nothing in the output you posted shows any indication that there is an error in the code. There are two Code Analyzer warnings ...

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I can't change workspace name matlab app designer
Can you dynamically create variables with numbered names like ALL_X_1, ALL_X_5, ALL_X_10, etc.? Yes. Should you do this? The ge...

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How to design a robust PI controller based on the Sensitivity peak value
Nowhere have you defined a variable named alpha, so when MATLAB sees alpha in your code it calls the alpha function with one out...

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understand if the cell is composed of all null elements
MATLAB is returning the correct result. The cell array is not empty, its size vector does not contain a 0. C = cell(1, 5) C{3}...

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problem about precision in matlab
i am working with very small numbers near ordder 10^-20 in my calculations. in the program i wrote, matlab must calculate four n...

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"find" dont work for datetime variable ?
I suspect that find is working correctly and so is == when called on a datetime array, but == is not behaving as you expect. Let...

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Why can use this function with only on input?
b.nonSub1(a) just give one input Incorrect. As shown in the "Dot and Function Syntaxes" section on this documentation page this...

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How can i generate .m file for a given simulink model?
Do you need to generate a MATLAB function file or do you just need to be able to simulate the model from MATLAB code? If the lat...

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How to fix table variable related error?
You expected for your table XX to contain a variable named td, but it doesn't. If you were trying to adapt another example to yo...

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Add 2 Numbers in a class
This syntax: x = Add; x.addNumbers(1,2); does not call the addNumbers method of the Add class with two inputs. It calls that ...

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3 d graph, but it's x vs. z and y vs. z
To plot along the plane of 0 in one of the coordinates, just use 0 when plotting. t = 0:720; z = zeros(size(t)); s = sind(t);...

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Generate a matrix with alternative positive and negative values with ones
Another approach: r = 4; c = 5; A = (-1).^((1:r).' + (1:c))

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Why is my maxperf.m code not operating correctly
Move the lines where you define p and q and call maxperf out of the maxperf function. With those lines present, MATLAB will do o...

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Plot function suddenly not working (getting error: Index in position 1 is invalid. Array indices must be positive integers or logical values.) Even for MATLAB examples
The correct command to check whether or not you've created a variable named plot is the following: which -all plot You had the...

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transform an empty matrix '0x0 double' into a matrix '0x2 double'
Since a 0-by-0 array and a 0-by-2 array have the same number of elements you can reshape one into the other. A = zeros(0, 0) B...

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creating combinations for different data type
If you're using release R2023a or later use the combinations function. T = combinations([8, 20], ["Age", "Gender"])

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Weird behavior regarding pi in symbolic expressions
See the description of the flag input argument on the documentation page for the sym function. The default method to convert a n...

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