Answered
Multiply all pages of a matrix
AFAIK there is no alternative way in general; unless your matrices has special property that can use some simplification.

5 years ago | 0

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Answered
Using addpath on Compiled Code
I can't see addpath in your snip of code. When you compile the app, all the source mfiles used by you app MUST be found by depe...

5 years ago | 0

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Matlab interpolation between two surfaces
Assuming your two original surfaces are z1 and z2, juts pick w scalar in (0,1) interval, zinterp = (1-w)*z1 + w*z2; If w == 0 ...

5 years ago | 0

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Matlab executable not running on remote access files
"I would like to change the directories for reading and writing theses files." IIRC the cd command is non effective in deployed...

5 years ago | 0

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Answers editor seems to be broken
I can't see the editor tool in some PC display config + Firefox After a simple view of the thread it ask me as if I would edit ...

5 years ago | 1 answer | 0

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Question

Is FORMAT DEBUG still any useful?
Can someone has an explanation for this (R2020B) clear clc x=1; y=x; x=x+1; format debug y x that produces y = ...

5 years ago | 2 answers | 3

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Answered
Two linear equation with absolute value equation
Correct minimum norm solution is xmin = 90.0000 -40.0000 5.0000 5.0000 normxmin = 98.7421 obtain...

5 years ago | 1

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Answered
Rearranging a 512x64 matrix into a 32x1024 matrix
% Assuming A is your input matrix of size 512 x 64 % such as % A=reshape(1:512*64,64,512)'; B = reshape(permute(reshape(A,[...

5 years ago | 1

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Answered
generate random number with total sum is 10
For the case of more generic sum of n variables Xi is equal to 1. If the apriori distribution is supposed to be uniform density...

5 years ago | 1

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Answered
Is fmincon appropriate for optimizing vector-valued optimization variables (scalar obj. function)?
Yes fmincon supposes to handle optimization problems on objective function that depends on vector of real values. There is no re...

5 years ago | 0

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Answered
How do I map array values on a logical array
Result = zeros(size(B)); Result(B==1)=A

5 years ago | 1

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Find the line where 2 planes intersect
% Planes implicit equations are: % a1*x + b1*y + c1*z = d1; % a2*x + b2*y + c2*z = d2; % a1 = 256; b1=0; c1=0; d1=0; ...

5 years ago | 1

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Answered
subsref works as not expected
I knew it for sometime: subsref never work to emulate comma list (not sure if it's documented), because a non trivial comma list...

5 years ago | 0

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Answered
Quadratic-Equation-Constrained Optimization
There is https://www.mathworks.com/help/optim/ug/coneprog.html but only for linear objective function. You migh iterate on b...

5 years ago | 0

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Answered
Resize and sum a matrix
If you isist on "resize" array1 =[1 2 3 4 5 6 7 8 9 10 11 12 13 ...

5 years ago | 0

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Preallocating a structure with a changing number of rows within a field
There is no need to preallocate a field (or in fact any variable) if you don't grow the array itself in a loop, which is your ca...

5 years ago | 0

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Answered
Find out number of bits needed to represent a positive integer in binary?
>> I=0:9 I = 0 1 2 3 4 5 6 7 8 9 >> n=nextpow2(I+1) n = 0 1 ...

5 years ago | 1

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How to use min function so that it stops at the first minimum value in a column matrix, stores values, and then continues going until it finishes the entire matrix? (details below)
A=[0.200 0.300 0.400 0.001 0.002 0.003 0.004 0.003 0.002 0.001] imin=find(A==min(A)); lgt=diff(union(imin,[0 length(A)])) C...

5 years ago | 0

Answered
Generation of Conditional Random Variables
I don't quite understand what you want but from your request you seem to compute X1 = C1 * S X2 = C2 * S ... X16 = C16 * S ...

5 years ago | 0

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Answered
Obtain a random number from a truncated normal distribution
In theory if you range is something +/-0.9*0.03 the maximum possible standard deviation you can reach with a truncated gaussian ...

5 years ago | 0

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Convert a symmetrical 4D array into a vector of it's degrees of freedom and vice-versa
% A = zeros(7,7,7,7); n = length(A); % 7 m = ndims(A); % 4 C = cell(1,m); [C{:}] = ndgrid(1:n); I = reshape(cat(m+1,C{...

5 years ago | 0

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Answered
Memory usage of functions like pause()
Pause by itself would not causes any issue. But as side effect it releases other parallel pending tasks and those might have mem...

5 years ago | 0

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How to get fminimax work for both max and min objectives?
I wouldn't use fminmax. I would use linprog to maximize q as subfunction, and fmincon to minimize z,b. Beside you should tran...

5 years ago | 1

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Condition number of Hilbert matrix depending on MATLAB build??
You and the students should NOT expect COND returns identical result, especially for ill-conditionned matrix like Hilbert matrix...

5 years ago | 0

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Answered
Replace some values of a vector with values from another vector of the same size
Simply C = max(A,B)

5 years ago | 1

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Solving a simple vectorial equation with one unknown
fsolve requires the number of unknowns == number of equations. This is the least-square solution f = @(x)norm([cross(OP,x*CD) ...

5 years ago | 0

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fmincon, the size of the current step is less than the value of the step size tolerance, but constraints are not satisfied
I beleive the correct sign of A is "+" c_eq(i)= x'*Qi*x + A(i,:)*x - b(i);

5 years ago | 1

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Answered
Find the common eigenvectors and eigenvalues between 2 matrices
K = null(A-B); [W,D] = eig(K'*A*K); X = K*W, % common eigen vectors lambda = diag(D), % common vector

5 years ago | 0

Answered
How to Define a Symbolic Continued Fraction
I don't have the symbolic tbx to try, you function can be defined sequentially in n by loop L = Inf; for k=1:n L = A/n +...

5 years ago | 1

Answered
Reshaping a 2D matrix to a 3D one with specific ordering
A = [1 2 3 4;... 5 6 7 8;... 9 10 11 12;... 13 14 15 16] [m n] = size(A); B = permute(reshape(A,[2 m/2 2 n/2]...

5 years ago | 0

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