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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.

oltre 5 anni fa | 0

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Risposto
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...

oltre 5 anni fa | 0

Risposto
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 ...

oltre 5 anni fa | 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...

oltre 5 anni fa | 0

Domanda


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 ...

oltre 5 anni fa | 1 risposta | 0

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Domanda


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 = ...

oltre 5 anni fa | 2 risposte | 3

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Risposto
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...

oltre 5 anni fa | 1

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Risposto
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,[...

oltre 5 anni fa | 1

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Risposto
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...

oltre 5 anni fa | 1

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Risposto
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...

oltre 5 anni fa | 0

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

oltre 5 anni fa | 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; ...

oltre 5 anni fa | 1

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Risposto
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...

oltre 5 anni fa | 0

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Risposto
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...

oltre 5 anni fa | 0

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

oltre 5 anni fa | 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...

oltre 5 anni fa | 0

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Risposto
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 ...

oltre 5 anni fa | 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...

oltre 5 anni fa | 0

Risposto
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 ...

oltre 5 anni fa | 0

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Risposto
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 ...

oltre 5 anni fa | 0

Risposto
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{...

oltre 5 anni fa | 0

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Risposto
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...

oltre 5 anni fa | 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...

oltre 5 anni fa | 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...

oltre 5 anni fa | 0

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

oltre 5 anni fa | 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) ...

oltre 5 anni fa | 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);

oltre 5 anni fa | 1

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Risposto
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

oltre 5 anni fa | 0

Risposto
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 +...

oltre 5 anni fa | 1

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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]...

oltre 5 anni fa | 0

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