Community Profile # Jan

Last seen: Today 2009 이후 활성

It is easier to solve a problem than to guess, what the problem is. Questions about FileExchange submissions are welcome - get my address from the code. I do not answer mails concerning questions in the forum.

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Is it possible to go through the elements of an array without resorting to length in a for loop?
Yes, this works: a = [1,2,3]; for i = a if i > 2 fprintf('%d is greater than 2\n', i) end end Notes: It ...

약 8시간 전 | 1

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calculating the mean for each column in a numerical array based on the elements in column 1
With a simple loop: A = [randi([1, 198], 8167, 1), rand(8167, 10)]; result = zeros(198, 11); for k = 1:198 match ...

약 8시간 전 | 1

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why I can't work with the optimization Toolbox?
ver tells you, if the toolbox is installed. This shows, if you have an active license for this toolbox: license('test', 'Optimi...

약 10시간 전 | 0

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Logical indexing cell array
A hint: I takes some time to create your input data such, that it can be used in an example. Please do such tedious editing by y...

약 10시간 전 | 0

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how I can create matrix of amout of fun after for loop ???
Maybe you mean: na = 10; a = linspace(-5,5,na); b = [-3 -1 2 3 4]; nb = numel(b); options = optimoptions('ga','Display','...

약 10시간 전 | 0

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MatlabRelVer(S)
Get name of release and version of Matlab

약 18시간 전 | 다운로드 수: 2 | 답변 있음
How to set up the axes of a binary Image?
out = rand(241, 321) > 0.6; % Binary image axes('NextPlot', 'add', 'XLim', [-1600, 1600], 'YLim', [-1200, 1200]); x = linspac...

약 18시간 전 | 0

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How can I add a greek symbol with a circumflex for labeling an axsis in a diagram: xlabel("\theta") but i additionaly want a ^ above the theta?
xlabel("$\hat\theta$ or $\widehat\theta$ ", ... 'Interpreter', 'LaTeX', 'FontSize', 20)

약 18시간 전 | 0

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How can I get a variable name to include a string of text?
Read Stephen23's hints carefully, because they are valuable. Storing important information in the names of variables is a progr...

약 22시간 전 | 1

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writetable command fails for any table in R2020b
Use the debugger to find out the details. Let Matlab stop, when the problem occurs: dbstop if caught error Type this in the co...

약 22시간 전 | 0

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A = [1 0 1]; B = [2 5 6]; C = B(A ~= 1) % Or: B(A == 1) = 0

1일 전 | 0

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multiple condition sumif without loop
Start with avoiding repeated work: XMatrix = zeros(length(UniqueDates), height(UniqueConc)); % Pre-allocate!!! xCredit = X.Ac...

1일 전 | 1

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Try: restoredefaultpath

1일 전 | 0

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How to divide a 2d array into blocks and create an array with the mean value of each block?
B = [1 3 4 3 10 0 3 4; ... 5 7 2 NaN 8 2 3 4; ... 8 4 6 2 NaN 3 5 7; ... 2 2 5 5 1 NaN 4 4]; B = repmat(resha...

1일 전 | 0

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Set x-axis tick labels in subplots
Avoid gca if you can get the axes handle directly: axesH = subplot(5,2,4); plot(axesH, DateFour, Four+Pedsfour); Why do you ...

2일 전 | 0

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How to change figure image to jpg image (image undistortion)
img = imresize(I,0.5); imwrite(img, 'YourImage.jpg')

2일 전 | 0

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Je rencontre un problème avec mon code. Je n'arrive pas a reconstituer une image. Avez-vous une idée de ce qui cloche avec mon code? Merc.
While the huge block of data do not matter in any way, the problem is found inside the code: fid = fopen('img2.jpg', 'w'); fwr...

2일 전 | 0

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how can i install borland for mexfile?
mex -setup create a ".bat" file, which has the syntax of a Windows batch script, but is interpreted by PERL - one of the strange...

2일 전 | 1

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Not enough input arguments.
f_m = @(t,y) mu*(y-cos(t))-sin(t); f_m is a function with 2 inputs. y_m(i)=(4.*y_m(i-1)-y_m(i-2))/3+(2/3).*h*(3*f_m(t(i))) % ...

3일 전 | 0

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How to save a matrix from the workspace to my computer as a dat file?
folder = 'D:\Your\Outputfolder'; file = fullfile(folder, 'yourFile.dat'); [fid, msg] = fopen(file, 'W'); assert(fid > 0, ms...

3일 전 | 0

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Index exceeds the number of array elements. Index must not exceed 2.
for i=3:n y_m(i)=y_m(i-2)+2.*h.*f_m(i-1); % <-- This is line 16 f_m(i)=20.*(y_m(i)-cos(t(i)))-sin(t(i)); % ...

5일 전 | 0

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matlab function to find a similar signal in data
Do you want to get something like this: x = rand(1, 10000); y = x(300:400) + (rand(1, 101) -0.5) * 0.01; % A small part with ...

5일 전 | 0

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For loop for Sine wave function
The warning is solved is solved by a pre-allocation. Insert before the loop: T = 5; ´ % size of window fs = 44100;...

5일 전 | 0

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Operate on 3d matrix based on 2d logical
A = rand(10000, 60, 60); B = rand(60, 60) < 0.5; % logical AA = reshape(A, 10000, 360); C = AA(:, B) * 3; Afterwards y...

5일 전 | 0

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json encode/decode
Does the encode of Matlab's production server help? a = [1,2,3] j1 = jsonencode(a) a1 = jsondecode(j1) j2 = mps.json.encode(...

5일 전 | 0

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How can I export data set from Matlab to excel ?
The maximum number of rows in Excel is 1'048'576, while it can work with 16'384 columns. This means, that you cannot store vecto...

5일 전 | 0

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have array entries filled depending on their indices?
The code is strange, because all elements of A are 0 except for the first one. B(1) is zero, so prod(B(1:n)) is zeros also. Mayb...

5일 전 | 0

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How can i read images for filtering using if else condition in GUI?
imfilter operates on the pixel values of an image. See: imfilter . There is no "parent" property, so simply omit this: % XG1 = ...

5일 전 | 0

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for loop is endless
ST1 = zeros(1, 10000); % Pre-allocate for k = 1:10000 ST1(k) = sadj * exp(r-0.5*(vol^2)) * T + vol * sqrt(T) * randn(k); ...

6일 전 | 0

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Solution Codes of Ordinary Diferenatial Equation
What is the purpose of the outer loop "for p=1:k"? Why does the inner loop "for n=0:p-2" run from 0 to p-2? It is confusing tha...

7일 전 | 0