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JESUS DAVID ARIZA ROYETH


Last seen: 1 día ago
198 total contributions since 2015

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Answered
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

Answered
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

Answered
How to compare between two cell array?
answer=cell2mat(cellfun(@(x) any(cellfun(@(y) isequal(x,y),W)),F,'uni',false))

alrededor de 1 mes ago | 0

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Answered
Using the Mod Function to Turn a Vector (i.e. 1:15) into [1, 2, 3, 1, 2, 3, 1, 2, 3] etc.
n=3; k=[n 1:n-1]; answer=k(mod(1:15,n)+1)

alrededor de 1 mes ago | 0

Answered
How do i determine the pixel coordinates of an image using RGB values?
image=imread('peppers.png'); R=image(:,:,1);%red chanel [x,y]=find(and(R>=230,R<=250));%here coordinates

alrededor de 1 mes ago | 0

Answered
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

Answered
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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Answered
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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Answered
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

Answered
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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Answered
Computation's with large numbers.
n=sym('94315998522576010519588224930693232398146802027362761139521'); answer=vpa((n-1)/2^143)

alrededor de 1 mes ago | 0

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Answered
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

Answered
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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Answered
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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Answered
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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Answered
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

Answered
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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Answered
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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Answered
'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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Answered
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

Answered
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

Answered
How to Ignore the last line from a file read
s=readmatrix(filename); s(any(isnan(s),2),:)=[]; figure plot3(s(:,1),s(:,2),s(:,3),'*-r')

alrededor de 2 meses ago | 0

Answered
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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Answered
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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Answered
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

Answered
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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Answered
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

Answered
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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Answered
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

Answered
Help with creating a different type of pareto chart?
Y=[ 81 15 21 38 38 21 31 27 22 135 55 24 54 66 97 11 117 332 140 34 456 4...

alrededor de 2 meses ago | 1

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