Answered
Handling Missing values in cell array from Excel cell extraction
mask = cellfun(@(C)any(ismissing(C(:))), extractedData.partCategories, 'UniformOutput', false);

6 days ago | 1

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Answered
dot indexing not supported for this type of variable” error
When you use predictFcn, the input data needs to be in the same format that you trained on. If you trained on a table() object,...

6 days ago | 0

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Question about solving symbolic coupled non-linear equations
The main issue was that you are displaying a struct, and symbolic variable arrays are not expanded for struct. The second issue...

6 days ago | 0

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Answered
Event function Indexing Error
The isterminal vector returned by the event function must be the same length as the value return. Your IC are probably at least...

7 days ago | 0

Answered
"Not enough input arguments" error when using fullfile
S1 = dir(fullfile(P,'*(7)*.csv')); That is returning the empty result, because it cannot find the directory or cannot match *(7...

7 days ago | 0

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关于 ndgrid 如何用正整数参数生成浮点数网格坐标数组，然后用 hypot 计算矢量长度度，出错 ?
Yes, ndgrid with two outputs is designed to have the same output type as input type. Well, except that sparse matrices are promo...

7 days ago | 0

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Answered
How to use "predict" to get x value for a given y value?
Scattered X and y values with X increasing. Suppose you had the input X Y 1 1 1 0.5 1 -0.1 2 2 2 1...

7 days ago | 0

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How to use y2abcd function if y parameter matrix has variables
Nothing in the RF toolbox accepts symbolic parameters (unless it is by accident.) You cannot use y2abcd() with symbolic paramet...

7 days ago | 0

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Answered
How to check if errordlg is shown
Looking at /Applications/MATLAB_R2024b.app/toolbox/shared/dastudio/+DAStudio/@DialogProvider/DialogProvider.m it appears to be ...

7 days ago | 0

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fmincon is not working
I bet expected_returns is a row vector. fmincon() passes values to the objective function in the shape of the x0 array. Here yo...

8 days ago | 0

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please help me to understand "AWGN Channel" and "HDL Implementation of AWGN Generator" blocks ?
HDL Implementation of AWGN Generator is used in HDL designs. It is specifically designed for HDL use. AWGN Channel is designed ...

8 days ago | 0

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complex number : real part and imaginary part
syms x mu real syms t real %c alpha=1 U=zeros(1,1,'sym'); A=zeros(1,1,'sym'); B=zeros(1,1,'sym'); C=zeros(1,1,'sym'); D=...

8 days ago | 0

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Answered
How to write subscript and superscriopt in a single variable?
You can create symbolic variable names that are specially formatted. When expressions using those names are displayed in LiveScr...

8 days ago | 0

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When I try to constrain node 3 to a line my displacements become ridiculously large, what am I doing wrong?
The rank() of GlobalK is only 6 but the matrix is 8 x 8. Using GlobalK \ F is likely to generate garbage. If you must use a ra...

8 days ago | 1

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Answered
Expression is too large for MATLAB to evaluate
Unfortunately, the expression is simply too large for the Symbolic Toolbox to handle. You will need to do something like taking...

8 days ago | 0

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why do i get error using * ?
integral() always passes a vector of values to the function being integrated (unless 'ArrayValued' is set to true). So in inte...

8 days ago | 0

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Do not understand documentation to add third party Arduino libraries
I suggest you use arduino-cli lib install --zip-path /PATH/TO/RoboClaw.zip --config-file arduino-cli.yam

8 days ago | 1

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Answered
Is there a way to pause gamultiobj, run other computations/scripts and resume gamultiobj (with and without restarting MATLAB)?
First of all, create some globally accessible stop flag, such as in the base workspace. Second of all, run gamultiobj with opti...

9 days ago | 0

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Why can't Matlab do the factorial of a non-integer number?
MatLab 'factorial' is coded so to work with integers only. More generally: factorial is only defined for non-negative integers....

9 days ago | 0

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Simpson method, ezplot (with strings)
Calculate dt first. Then calculate Q.*c.*dt. Now use https://www.mathworks.com/matlabcentral/fileexchange/25754-simpson-s-rule-f...

10 days ago | 0

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How do I implement this kind of an allpass filter?
you cannot implement those equations. e(n) is defined in terms of d(n) d(n) is defined in terms of e(n - something) Sub...

10 days ago | 1

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Matlab to solve finite difference for Ode
S = 'aa = 1; bb = 2; alpha = 1; beta = 2; n=29; % h = (bb-aa)/(n+1); h=0.1' idx = find(S>128) S(idx) S(idx)+0 Your co...

10 days ago | 0

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Event triggered control using ode45
Proceed as described in https://www.mathworks.com/matlabcentral/answers/2169908-while-in-ode45#answer_1552013 %assuming r_k is...

10 days ago | 0

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Answered
Change Stacking Order of Plots
pdeplot(results.Mesh, XYData=results.NodalSolution, ZData=results.NodalSolution, ColorMap="jet"); view(2) Those lines imply th...

11 days ago | 0

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Answered
hi, it says "Unable to perform assignment because the size of the left side is 1-by-3 and the size of the right side is 1-by-2" and the error is at line 96 in my code
Node(1,:) = [0,0]; Node(2,:) = [3,3]; Node(3,:) = [6,6]; Node(4,:) = [9,9]; Node(5,:) = [18,0]; Node(6,:) = [9,0]; That cr...

12 days ago | 0

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control random number generator in async programming
parpool are defined to seed random number generators differently. See https://www.mathworks.com/help/parallel-computing/control-...

12 days ago | 1

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How to get 1 as the highest order coefficient in a polynomial expression?
syms p K_s0 Phi_V Phi_G s K_p K_x0 T_i real; Phi_V = -p*(K_p/K_x0)*(1 + 1/(s*T_i))*1/s; eqn1 = p == K_s0*(Phi_V + Phi_G); eqn...

12 days ago | 0

Answered
The line on the legend are not showing
What you describe sounds as if either X_1 or Y_1 are scalars. In such a case, requesting . or o will draw markers, but there wou...

12 days ago | 0

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Answered
Plotting z = f(x, y) when (x, y, z) values are known
Use https://www.mathworks.com/help/pde/ug/decsg.html to create a decomposed geometry. Calculate the temperature values on the r...

12 days ago | 0

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Answered
why do I get a negative numbers???
opts = optimoptions('fsolve', 'MaxFunctionEvaluations', 1e6, 'MaxIterations', 1e6); Guess = linspace(0,.001, 23); Answers = fs...

12 days ago | 0