Answered
extract the information from a matrix with three columns
*_EDIT_* load('y.mat'); [yy,i0] = unique([y(:,1:2);y(:,[2 1])],'rows'); y3 = repmat(y(:,3),2,1); y3 = y3(i0); [...

10 years ago | 0

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Answered
Can I have a code that detects # of element transitions and return a matrix that has only rows of minimum element transitions?
_...row 2, 3 , 4 are compared to 1 then row 3, 4 compared to 2 and so on..._ C = squeeze(sum(bsxfun(@minus,A,permute(A,...

10 years ago | 0

Answered
nearest value but bigger nearest
k = bsxfun(@minus,A(:)',B(:)); k(k >= 0) = -inf; [~,ii] = max(k); ii(all(k == -inf)) = 0;

10 years ago | 0

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Answered
Find the indices of elements of matrix that were multiplied
A =[ 8 1 6 3 5 7 4 9 2]; n = 2; s = size(A); B = real(exp(conv2(log...

10 years ago | 1

Answered
Sum of nonzero vector elements
v= [1 2 3 0 0 0 4 5 0 6 7 0 8 9]; b = bwlabel(v(:)); [a,ii] = unique(b,'first'); indx = ii(a ~= 0); t = b ~= 0...

10 years ago | 1

Answered
converting string to double
'1234' - '0'

10 years ago | 2

Answered
problem with sorting a structure
images=dir('file*.tif'); n = {images.name}'; [~,ii] = sort(str2double(regexp(n,'(?<=file)\d*(?=\.txt)','match','once')))...

10 years ago | 1

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Answered
Matrix A & B need to be merged, Can I delete a complete raw if one appears in both matrices and same column position?
Hi friends! Please my small contribution: jj = reshape(permute(... bsxfun(@plus,permute(A,[3,2,1]),B),.....

10 years ago | 1

Answered
how to use for loops command to ignore 10 times the same code?
[NUMERIC,TXT]=xlsread('whole10L22.xlsx'); x= NUMERIC(:,1); y = NUMERIC(:,2); Mag = NUMERIC(:,3); date_num = datenu...

10 years ago | 2

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10 years ago | 2

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Answered
How to rewrite a conditional recursive funtion without for-loop
Hi Pascal! Please only with |for-end| loop: nn = [n1,n2,n3]; % nn = randi([0 10],20,3); t = all(nn > 0,2); nn(:,3)...

10 years ago | 0

Answered
How to add data in a matrice?
without loop: F = reshape(1:32,4,[])';

10 years ago | 0

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Answered
summing logicals i times where i is taken from a matrix of integers
*_EDIT_* crit = 0.395; z = max(R(:)); n0 = numel(R); s = size(R); Lo = crit >= rand([s,z]); ii = reshape...

10 years ago | 1

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Answered
find a value and following values in a matrix
out = (cumsum(A == 23,2)>0).*A

10 years ago | 1

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Answered
Definite Integrals in for-loop
Please try code below J = linspace(0,1,1000); kappam = 2*(tanh(2*J)).^2-1; f = @(phi)sqrt(1- kappam.^2 * sin(phi...

10 years ago | 1

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Answered
How to rewrite recursive funtion without for-loop
a = 1:20; b = 5; c = 3; a1 = a; a1(1:2) = 0; x = filter(1,[1,-b,-c],a1(:));

10 years ago | 2

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Answered
How to convert arrayfun to for loop
Array = hankel(1:27,[27,1:26]); or count = 27; L = (1:count)'; Array1 = zeros(count); for jj = 1:count ...

10 years ago | 0

Answered
How to take hourly average from 15 minutes random data.
d = xlsread('data1.xlsx',1,'A2:B1147'); d0 = datevec(d(:,1) + datenum([1900 1 -1])); [a,b,c] = unique(d0(:,1:4),'rows','...

10 years ago | 1

Answered
Matlab: trasform cell arrays into a matrix
zz = cat(1,U{:}); zz(cellfun(@isempty,zz)) = {0}; Z = cellfun(@(x)x(1),zz);

10 years ago | 1

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Answered
Find Indexes above zero in a matrix and replace thoses indexes with the value of a vector with the same length.
B = bsxfun(@times,A > 0,V) + A.*(A <= 0); or [ii,jj] = find(A > 0); B = A; B(sub2ind(size(A),ii,jj)) = V(ii);

10 years ago | 0

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Answered
How to convert a 3d matrix to a matrix of cells?
C = cellfun(@(x)reshape(x,[],1),num2cell(M,3),'un',0);

10 years ago | 1

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Solved

Determine if a Given Number is a Triangle Number
*Description:* Determine if the elements of an input array are triangle numbers and return the result as an array with the sa...

10 years ago

Solved

Isothermal Expansion
Given the initial pressure and volume of an ideal gas, calculate the new volume, given the new pressure. Hint: <https://en.wi...

10 years ago

Solved

Remove the vowels
Remove all the vowels in the given phrase. Example: Input s1 = 'Jack and Jill went up the hill' Output s2 is 'Jck nd Jll wn...

10 years ago

Solved

Calculating cost
You sold a Product at $x and gain 10% What was the cost of the product?

10 years ago

Solved

Create times-tables
At one time or another, we all had to memorize boring times tables. 5 times 5 is 25. 5 times 6 is 30. 12 times 12 is way more th...

10 years ago

Answered
How to create a matrix with for-loop when the columns are unknown?
Let |y_point| - vector [n x 1] [ii,jj] = find(abs(bsxfun(@minus,y_function(:),y_point(:)')) < 1e-3);

10 years ago | 2

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Answered
Hi everyone, can you help me to solve following program
A = [1,2,3;4,5,6;7,8,9]; C = toeplitz([ones(1,3),2*ones(1,2)],[1 2 2]); C(C==1) = A;

10 years ago | 1

Answered
How to create a piecewise function with if and else statements?
t = -5:30; t0 = [-inf 0 8 16 26 inf]; [~,ii] = histc(t(:),t0); f = {@(t)zeros(size(t)); @(t)10.*t.^2 - 5....

10 years ago | 0

Answered
Matlab to extract the n th diagonals in a Matrix
A = randi(9,5); n = [2,4]; A(sub2ind(size(A),n,n)) = 100*n;

10 years ago | 0