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Andrei Bobrov


Last seen: 2 giorni ago
4.916 total contributions since 2011

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Answered
Processing 2D into 3D matrix
modeshapes = sin(phi + reshape(x,1,1,[]));

4 giorni ago | 0

| accepted

Answered
Adding rows to matrix conditionally
out = [(x(1,1):x(end,1))',repelem(x(:,2),[diff(x(:,1));1])];

5 giorni ago | 0

Answered
Fill in missing NaNs
This question is a repeat of this question: x = [1;2;3;4;nan;nan;nan;nan;nan;5;7;8;nan;nan;nan;nan;11;11;12;nan;nan;nan;15]; ...

5 giorni ago | 1

Answered
Filling in missing points
In R2016b: T = readtable('weather_laverton.xlsx','Sheet',1); TT = table2timetable(T); TTout = fillmissing(TT,'linear'); Add ...

6 giorni ago | 0

Answered
How to get all values existing in arrays/matrices?
[a,~,c] = unique(reshape(myArray',[],1),'stable'); out = [a, accumarray(c,1)]; or out = varfun(@(x)x,array2table(myArray(:)),...

12 giorni ago | 1

| accepted

Answered
find values in vector present in cell array
out = cell(size(cA)); for i = 1:numel(out) x = cA{i}'; [~,out{i}] = ismember(x(:)',V); end or with cellfun [~,out]...

19 giorni ago | 1

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Answered
how to extract n rows in a matrix column iteratively?
out = num2cell(reshape(A,3,[]),1); or out = accumarray(ceil((1:numel(A))'/3),A,[],@(x){x});

circa un mese ago | 0

Answered
DOT type element wise multiplication of two 2-D matrices with array expansion (3-D)
out3D = A .* permute(B,[3,1,2]); % for R2016a and later out3D = bsxfun(@times,A, permute(B,[3,1,2])); % earlier R2016a

circa un mese ago | 0

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Answered
Convert a vector to single element
signal = dec2bin((0:255)'); or fullfact([2 2 2 2 2 2 2]) - 1; in your case for i = 256:-1:1 signal(i,:) = dec2bin(i-1,...

circa un mese ago | 1

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Answered
Extracting a vector from elements of a matrices that are in a cell structure.
V = cat(1,C{:}); V(:,1)' V(:,2)'

circa un mese ago | 0

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Answered
converting a matrix sequentially in to single column
Let A - your array. k = 30; [m,n] = size(A); out = reshape(permute(reshape(A,k,[],n),[1,3,2]),[],n);

circa un mese ago | 0

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Answered
How to convert datenum to datetime in a MATLAB Table
a=[2 737735.191331019 6 737735.182129630 3 737735.182013889 7 737735.141481482]; T...

3 mesi ago | 0

Answered
Unique Number Assignment To Each Time
a=[1.1, 1.1, 1.1, 1.2, 1.2, 1.2, 2.1, 2.1, 2.1]' [i,g]=findgroups(a); out = i - 1;

3 mesi ago | 0

| accepted

Answered
Find max value with multiple conditions
T=readtable('wave height data.xlsx'); [r,rn] = findgroups(T(:,1)); [c,cn] = findgroups(T(:,2)); out = accumarray([r,c],T.Wave...

3 mesi ago | 1

| accepted

Answered
Count smaller than 15 cells in the table coulumns
T = varfun(@funir,results_excel,'I',2:5); T.Properties.VariableNames = results_excel.Properties.VariableNames(2:end); T.statio...

3 mesi ago | 0

Answered
Is there a way to find the max value in an array without using the "max" command?
Let A - your array. B = A(:); max_value = B(all(B - B' <= 0));

3 mesi ago | 0

Answered
Consolidating counts & sum by Year Range
y = [2001, 2002, 2005 2003, 2004, 2007]; A = [2001 2002 2001 2003 2003 2003 2004 2004 2004 2004 2004 2007; 1 ...

3 mesi ago | 1

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Answered
Convert Columns Arrays to numeric
...how can I know the data type of the columns? varfun(@class,combine) solution: load('data.mat') combine = [combine,rowfu...

3 mesi ago | 1

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Answered
Matrix dimensions must agree error in if loop
day = input('What day is today? -> ', 's'); lo = any(strcmpi(day,{'saturday','sunday'})); if lo disp(['Its ' day ' ! ...

3 mesi ago | 0

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Answered
How to solve the following exercise?
function out = find_neighbor(M,i,j) out = all(ismember(1:M(i,j)-1,M(i-1:i+1,j-1:j+1))); end

3 mesi ago | 1

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Answered
Collect matrix values by using a "for" loop
Let A - your array. out = reshape(A.',[],1);

3 mesi ago | 0

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Answered
How can I convert 2 column matrix to a cell array?
T = readtable('path\to\your\xls\file\matrix.xlsx','ReadVariableNames',0); T.Var3 = str2double(T.Var3); T = T(any(T{:,1:2} ~= 0...

3 mesi ago | 0

Answered
find common elements from cell array and remove it
out = A(~ismember([A{:}],[B{:}]));

3 mesi ago | 0

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Answered
Adding values from columns 1:i for each column for a new matrix of the same size
Let A - your array (442 x 25) out = cumsum(A,2);

3 mesi ago | 0

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Answered
How to replace elements of matrix by elemts from array
out = x(NewV);

3 mesi ago | 0

Answered
Find the median row of a binary column and replace the column with just the median row
I = imread('line.png'); bw = im2double(rgb2gray(I)); [i,j] = find(bw); [n,g] = findgroups(j); idx = floor(splitapply(@medi...

3 mesi ago | 0

Answered
Extracting values from a cell array into new arrays
CC = cat(3,C{:}); [m,n,k] = size(CC); Z = permute(repmat(b,1,1,n),[1,3,2]); out = CC(sub2ind([m,n,k],Z(:,:,2),repmat(1:n,size...

3 mesi ago | 0

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Answered
How would I create a matrix from the following strings
T = readtable('Path\your\txt\file\ThinPlateNodes.txt'); T.Varend = str2double(regexp(T{:,end},'(\-)?\d+(\.\d+e\-\d+)?(?=\}$)','...

3 mesi ago | 1

Answered
Finding Unique values for First Row of a Matrix
Let A - your array. output = A(1,:); for i = 2:numel(output) u = unique([output(1:i-1)';A(:,i)]); output(i) = u(i); ...

3 mesi ago | 0

| accepted

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