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JESUS DAVID ARIZA ROYETH

Last seen: 1 día ago
198 total contributions since 2015

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n! permutation matrices
identity=eye(4); total=perms(1:4); for k=1:24 matrixperm=identity(total(k,:),:) end

alrededor de 1 mes ago | 0

matrix of matrices - matrix with matrices inside it
use cell array: A = {[1 2 3 4] [5 6 7 8]} A{1}% get matrix 1 A{2}% get matrix 2

alrededor de 1 mes ago | 0

How to compare between two cell array?

alrededor de 1 mes ago | 0

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Using the Mod Function to Turn a Vector (i.e. 1:15) into [1, 2, 3, 1, 2, 3, 1, 2, 3] etc.

alrededor de 1 mes ago | 0

How do i determine the pixel coordinates of an image using RGB values?

alrededor de 1 mes ago | 0

Listing elements from one matrix to another
A = [0 0 0 2 1 0 0 0 0; 1 2 0 0 0 0 3 2 0; 0 0 0 2 3 1 0 0 0]; B=reshape(A',3,[])'; B(sum(B,2)==0,:)=[]

alrededor de 1 mes ago | 1

Find missing elements of a vector
vector =1:1:80; numbers=[ 1 3 5 12 34 44 55 62 63 68 69 70 72 75 79]; another = setdiff(vector,numbers)

alrededor de 1 mes ago | 1

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location of the i'th element
you can use nested loops for i = 1 : size(A,1) for j=1:size(A,2) A(i,j) end end with a loop: n = numel(A);...

alrededor de 1 mes ago | 0

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real time video processing
I did real-time processing with a video, what you can do is take out the frames per second of the video and with a "tic toc" to ...

alrededor de 1 mes ago | 0

The size of the indicated variable or array appears to be changing with each loop iteration
P=zeros(1,n+1); P(1) = P_in; for i = 2:n CR = (P_out/P_in)^(1/(i+1)); P(i) = CR*P(i-1); P(i+1) = CR*P(i); end ...

alrededor de 1 mes ago | 0

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Computation's with large numbers.

alrededor de 1 mes ago | 0

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how to randomize a vector as fast as possible
I recommend using a MEX file https://ww2.mathworks.cn/matlabcentral/fileexchange/27076-shuffle?s_tid=FX_rc3_behav if you want t...

alrededor de 1 mes ago | 0

How i check cell in cell array is different of 0?
an example: T1={{0} {4} {5} {6} {5}} items=vertcat(T1{cellfun(@(x) ~isequal(x,{0}),T1)}); items=[items{:}];

alrededor de 1 mes ago | 0

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For Loop involving n-substitution and creating it as a row vector
n=input('the number of column for row vector= '); for i=1:n b(i)=input(['b',num2str(i),'= ']); end disp(b); y=input('i...

alrededor de 1 mes ago | 1

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Function: Compare each Element of 2 Matrix for zero and non-zero
Z = [1,0,1;1,1,1;1,0,1] Z_2 = [2,0,2;3,1,3;2,0,2] answer=sum(sum(Z_2(Z==0)))==0;%1 if it is true

alrededor de 2 meses ago | 0

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Indices on the left side are not compatible with the size of the right side
the problem is because you do not need to use the loop for: %begin with specifying constants AB=0.6; BC=0.1; BG=0.08; AG=A...

alrededor de 2 meses ago | 0

I want the code to repeat for 10,000 times and add the new value to the matrix but I don't know how? Please help.
nsims = 10000; people = repmat(100,1,100); simsize = numel(people); for k = 1:nsims y = randperm(simsize, 2); ...

alrededor de 2 meses ago | 0

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How to force reshape for change elements?
m=input('z= '); n=m+1; x=zeros(n,1); for i=1:n x(i)=input(['x',num2str(i),'= ']); end x=repmat(x,1,n).^repmat((0:1:m),...

alrededor de 2 meses ago | 1

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'Store the first N (user enters N) Fibonacci numbers in a row vector.'I know how to get user entered number of fibbonachi numbers. But I don't know how to show them in a row vector.
clc N=input('Enter the number = '); B=zeros(1,N); B(1)=0; B(2)=1; count=1; for i=3:N B(1,i)=B(i-2)+B(i-1); end d...

alrededor de 2 meses ago | 1

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Checking if two matrices are similar
you can check with a tolerance: tol=0.0001;%tolerance if sqrt(sum(sum((B-S*A/inv(S)).^2)))<=tol disp('It is true') else...

alrededor de 2 meses ago | 0

how can I create a function with multiple variables?
y=@(a,x,z) a(1) + (a(2)./z) + (a(3).*x) + (a(4).*x.^2) + ((a(5).*x)./z) + ((a(6).*x.^2)./z); x=[0.1 0.2 0.3 0.4 0.5 0.6 0.65 0...

alrededor de 2 meses ago | 0

How to Ignore the last line from a file read

alrededor de 2 meses ago | 0

How can you extract odd and even rows and columns from image to seperate image outputs
B=A(2:2:size(A,1),2:2:size(A,2),:);%Even Pixels Only C=A(1:2:size(A,1),1:2:size(A,2),:);%Odd Pixels Only

alrededor de 2 meses ago | 0

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gpuArray for vpa (variable precision arithmetic)
In this case you are going to have to sacrifice something, if you use VPA the matrices become symbolic, therefore all the operat...

alrededor de 2 meses ago | 0

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Create an RGB Image using a loop by choosing a random color for each pixel
no te sirve así? for i=1:10 imagen=uint8(randi(255,10,10,3)); figure imshow(imagen) end

alrededor de 2 meses ago | 0

inserting vectors into another new vector
A=[7 17 27 35]; B=[13 22 30 15]; N = max(numel(A),numel(B)); C=[A nan(1,N-numel(A)); B nan(1,N-numel(B))]; C(isnan(C))=[] C...

alrededor de 2 meses ago | 1

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How do I plot one 3D vector arrow for all points in a 3d scatter
% creating 3d scatter plot % Load data T = table((rand(100,3))); T = [table(T.Var1(:,1),'VariableNames',{'A'}),table(T.Var1(...

alrededor de 2 meses ago | 0

Represent the result of matrices manipulation as rational numbers
format rat A = [ 1/2 1/3 ; 4 5/6] B = [ 2 1/4 ; 4 1 ] C = A+B

alrededor de 2 meses ago | 0

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How would I only save variables in a list to a matlab no recursively?
n=5;%signal1 .... signal5 signallist=split(num2str(1:n,'signal%i ')); filename='here.mat'; save(filename,signallist{:})

alrededor de 2 meses ago | 0