Bruno Luong

Last seen: Today | 2009 이후 활성

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Preallocate variables with unkown size
You can compute exactly the size needed for your vectors A = G_orig.adjacency; A(inActive,:) = 0; m = nnz(A(:,inActive)); ph...

1일 전 | 0

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Reshape Nx1 struct with field of Mx1 elements to N*Mx1 vector
Something like B = cat(1,A.bar)

2일 전 | 0

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cumulative sum table over group
tableA = {"A" 1 0 3 ; "A" 1 2 3 ; "A" 1 3 3 ; "A" 2 0 2; "A" 2 2 ...

4일 전 | 1

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질문

What means "MATLAB connector is not running"?
I have a GUI app that runs fine under MATLAB, however when compiled as standalone with MCC, I get a strange warning message "w...

4일 전 | 답변 수: 1 | 0

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multi array vectorization problem (reformulated)
A = [ -0.8013 -0.4981; -0.2278 -0.9009]; t = 0:3; % eigen space [V,D]=eig(A,'vector'); D = reshape(D,1,[]); % compu...

6일 전 | 2

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Find differences in a set of points without a for loop
x = randi(10,3,1) d = abs(x - x.')

6일 전 | 0

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Rotate the coordinate system to align an existing plane with Y'Z' plane
Take a look at this thread and see if you can use it

9일 전 | 0

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replace matrix A with the values of another matrix B
A= cat(3, [ 0 0 1; 0 1 0; 0 1 1], ... [1 0 0, 0 0 0; 0 0 0], ... [0 1 ...

10일 전 | 1

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Can anyone please vectorize the code I have?
There is nothing in your data to guess that Jout must have 14 elements, the last index > 0 is 13. J_org = [ 0 2 0 ...

10일 전 | 0

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Variable f coeffficient depends on x for linprog
Solve 2 problems f= [0 f2]; x = linprog(f,A,b,Aeq,beq,lb1,up1); with lb1 = -inf(size(x)), up1 = zeros(size(x)); g= [50 f2]; ...

21일 전 | 0

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Computing Euclidean distance between 2 points
For a row vector d % sum(d.^2) is equal to % d*d' Example d=randi(10,1,3) sum(d.^2) d*d'

21일 전 | 1

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Standalone compiled with Matlab compiler doesn't work
Have you include PSD_FSE3D.xml in the packaging? Do you take into account the path of the file is different when you run in sta...

24일 전 | 0

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Surface plot of function over triangular domain
P1 = [1,1]; P2 = [2,0.5]; P3 = [4,4]; zfun = @(x,y) x.^2+y.^2; % Create triangular mesh of triangla P1,P2,P3 n=20; [I,J]...

25일 전 | 1

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swaping 2 random numbers from array
ij = randperm(length(x)-1,2)+1; x(ij) = x(flip(ij));

26일 전 | 0

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Warning: Matrix is close to singular or badly scaled. Results may be inaccurate.
It's a warning (not really error) It means your matrix is numerically not invertible (or almost not invertible)

26일 전 | 0

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when edit figure error "undefined function mtimes for input arguments of type string"
can you type dbstop if error on MATLAB command window, then try to trigger the error?

26일 전 | 1

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Matrix from measured data is singular, what could be the reason?
Could you try the normalization similar to my answer here?

26일 전 | 0

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I want to find out points whose coordinates are within the volume formed by a cone shape.
Assuming the cone center is C: (3 x 1) coneangle is the cone angle (0 to pi, pi corresponds to the extreme case where the con...

26일 전 | 0

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Plot differential equations with respect to two variables in a 3d plane
Try this (adapt to your code): %editparams; %file that contains parameters Tend = 10; Nt = 100; % Define RHS functions RHS ...

27일 전 | 0

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Generating a Dictionary Function
You can use container.Map. I give here example of numbers, but it can handle char array or strings as well. The time access, u...

27일 전 | 0

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For consistency with "nan", wouldn't it be nice to be able to issue "missing(3)"?
Why not define your own function mymissing mymissing(3) mymissing(2,3) mymissing(2,'string') mymissing(2,3,'double') fun...

28일 전 | 0

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Execution of script nchoosek as a function is not supported
Please do that which nchoosek you must find somewhere similar to the above or this C:\Program Files\MATLAB\R2022a\toolbox\ma...

28일 전 | 0

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time date to datenum and datenum to datetime
I make a round conversion so you can convert any format to any other by using the appropriate substeps dt=datetime(2022,04,28,1...

28일 전 | 1

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Hello everyone.I'm new to the community, please help me to use matlab to calculate the volume of this 3D Shape
u=linspace(0,1,31); v=linspace(0,2*pi,37); [u,v]=meshgrid(u,v); x=(1-u).*(3+cos(v)).*cos(4.*pi.*u); y=(1-u).*(3+cos(v)).*sin...

29일 전 | 2

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VertCat unique rows of multiple tables.
% dummy test data Filename1=["a"; "b"; "c"]; Data1=["a1"; "b1"; "c1"]; T1=table(Filename1,Data1,'VariableNames',{'Filename','...

29일 전 | 0

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how to multiply a curve (in a plot) by -1, if you do not have the original data? (I only have the plotted data.)
Plot your figure, you can then retrieve the data with x = get(findobj(gcf,'Type','line'), 'xdata') y = get(findobj(gcf,'Type',...

29일 전 | 0

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I am looking for a way to include duplicates into ismember function
Why use ismember at all (at least in that way)? O = Osw( interp1(a,1:length(a),y, 'nearest'))

30일 전 | 1

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How to calculate the width that contains 60% of the total area of peaks?
load Intensity.mat load position.mat ifun=@(x) interp1(x2,Int,x,'linear','extrap'); I0=integral(ifun,x2(1),x2(end)) x = fz...

30일 전 | 0

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Rotate an Ellipsoid towards a point
axlgt = [5,1,1]; P = [5;6;7]; [~,i] = max(abs(axlgt)); ei = accumarray(i,1,[3,1]); a=cross(P,ei); T=makehgtform('axisrota...

약 1달 전 | 0

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How to find a permutation matrix to turn a general hermitian matrix into a block diagonal one?
A = [1, 0, 1; 0, 1, 0; 1, 0, 1], p=symrcm(A) A(p,p)

약 1달 전 | 0

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