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If v=-10:1:10, why isn't the v>0 case triggered?
You are passing the entire vector v into logic(). Inside logic() you are testing if(v>=0) -- so you were testing the entire vect...

9ヶ月前 | 1

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Displaying command line output in App live
You can use evalc to evaluate code and get back character representation of the output after complete execution of the code. You...

9ヶ月前 | 0

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how to convert gray images to rgb
sc = round(rescale(spect,1, 256)); rgbBlock = permute(reshape(map(sc,:), size(sc,1), size(sc,2), [], 3), [1 2 4 3]); rgbBlock ...

9ヶ月前 | 0

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i have written a while loop which displays 'yes' or 'no' if the difference is less than 0.5 for a given problem. how can i write this output into an excel sheet.
data=readtable("DATA.xlsx"); X=table2array(data); i=1; j=2; decisions = strings(0); decision_count = 0; while i<57...

9ヶ月前 | 0

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How to automate/solve this process in MATLAB
syms s u eqn = 1472*s^4 - 256*s^2*u^2 + 1392*s^2 - 24*u^2 + 150 == 0 sol = solve(eqn, s, 'maxdegree', 4) We can see by examin...

9ヶ月前 | 1

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Problem using subs function for multiple variables on 2023b
Your theta2 is a symfun so diff(theta2,t) is a symfun, and that makes the entire type_symfun expression into a symfun that retur...

9ヶ月前 | 1

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shift -discrete signal
If you have a fractional delay (as you seem to have -- 1/6 of a sample) then see https://www.mathworks.com/help/dsp/ug/design-o...

9ヶ月前 | 1

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How Can I load 200 images or more image frames via parfor loop?
k = i - start_idx + 1 images(:,:,k) = tmp_img(:,:,1); Inside parfor, the use of the loop control index must be...

9ヶ月前 | 0

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Does adding variables to table cause Matlab to re-write the entire table in memory?
No. Internally, tables have a cell array with one cell entry for each variable. The cell array would have to be extended, but th...

9ヶ月前 | 0

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convert struct in class?
class method invocations are generally slower than calling a fixed function name passing in an input. On the other hand, if you...

9ヶ月前 | 0

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Reading the image sequency
%sample name "Field on_1ms_4_8V_60sec-02-Deskew_t001z001c1-2" projectdir = 'name/of/directory/data/files/are/in'; basefilena...

9ヶ月前 | 0

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How to set the interval of the solution when I use "vpasolve" to solve an equation?
vpasolve() and pass a list of equations as the first parameter. Pass a list of variables in the second parameter. In the ...

9ヶ月前 | 0

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Solving Inequalities using symbolic tool box
It is common with the symbolic engine that in practice you need to convert inequalities into equalities by introducing a non-neg...

9ヶ月前 | 1

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FFT and Fourier series formulas from CSV data file
filename = 'tek0005.csv'; data = readmatrix(filename, 'HeaderLines', 21); time = data(:,1); T = mean(diff(time)); Fs =...

9ヶ月前 | 0

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Matlab-Excel shape PROBLEM
Create a vector containing the number of consecutive elements needed to move into each row. Not the indices, the count. So for e...

9ヶ月前 | 0

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Correlation between 2 vectors give a matrix full of Nan
t = linspace(0,1) .'; %COLUMN A=5; f=1; ph1=0; cost=A*cos(pi*f*t+ph1); cost2 = A*cos(2*(pi*f*t+ph1))+1; c = corr(cos...

9ヶ月前 | 1

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Array Problem How can I unpack an array? why the firt element pf my array is always 0?
[I1; I2; I3]= I; That code is valid only if I is a function (not function handle) that returns at least 3 outputs. It...

9ヶ月前 | 0

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How do I generate a random signal that follows normal distribution of mean value 0 and standard deviation 10 ?
N = 1e7; target_std = 10; target_mean = 0; data = randn(1,N) * target_std + target_mean; %crosscheck mean(data) std(da...

9ヶ月前 | 0

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this code fails with one file and one sub-folder https://www.mathworks.com/help/deeplearning/ug/train-deep-learning-network-to-classify-new-images.html#
If you only have one input then splitting is not going to work. Note also that if you only have data for one class then trainin...

9ヶ月前 | 1

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The code is plotting $R_0$ against two parameters
I had to guess about the range of alpha_1 and alpha_3 that you wanted to plot. The contour turns out solid color because the va...

9ヶ月前 | 0

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Need help solving and plotting a first order pde
You have the derivative of tau with respect to t, so tau is a function of t. You wish to plot tau vs gamma, so tau is also a fu...

9ヶ月前 | 1

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the tranpose of transpose doed not equals the original matrix
You have a broken sparse matrix, probably build by a third-party product, but possibly built by a broken mex file. See a simila...

9ヶ月前 | 3

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wfbm function wierdly crashes for a range of hurst exponent
H-(1/2) is passed to an internal function named alphacfs . In that function I = 1:1000; cka = gamma(alpha+1)./(gamma(I).*ga...

9ヶ月前 | 0

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find the longest diagonal sum of a matrix.
When you press the green Run button, that is equivalent to running the function from the command line with no parameters. When ...

9ヶ月前 | 0

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Only perform a function when the working dialog is not closed
See uiwait and waitfor See also questdlg() https://www.mathworks.com/help/matlab/ref/inputdlg.html#d126e819840 in particular th...

9ヶ月前 | 0

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What difference does the choice of FIK make?
https://www.mathworks.com/matlabcentral/answers/93105-what-are-the-lm_license_file-and-mlm_license_file-environment-variables-an...

9ヶ月前 | 0

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How can i preprocess the rice colored image before applying this code
You need to convert the image to grayscale and save it to 'rice_preprocessed.png' For anything else, you should consider buildi...

9ヶ月前 | 0

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I am a university student and this is my university email: redacted@eng.zu.edu.eg Can I get Matlab for free? If possible, how do I get the activation key?
There are three possibilities here: Your university might have arranged with Mathworks to support Mathworks licenses for all el...

9ヶ月前 | 0

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How can I find the two intersection points of the x and y axis of two equations in Matlab?
Example with deliberately different equations. You can study the techniques and appy them to your own code. syms x y eqn1 = y ...

9ヶ月前 | 1

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error: Unsupported input format for From Workspace block 'untitled/From Workspace1'. Available formats are double non-complex matrix, a structure with or without time, or a st
When you use From Workspace, then you need to be importing something that has a time component attached to each measurement, suc...

9ヶ月前 | 0

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