Answered
Opening multiple .csv files using readtable
% opts is unchanged D = 'C:\Users\krist\OneDrive\Documents\MATLAB'; S = dir(fullfile(D,'*.csv')); for k = 1:numel(S) F =...

5 years ago | 2

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Answered
How to create matrix with other matrixes by joining them?
a = [1 2 3]; b = [4 5 6]; c = [7 8 9]; d = [10 11 12]; res = reshape([a;c;b;d],2,[])

5 years ago | 2

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Answered
saving the data in a variable
"...how to change the name of the file when matlab saves it" That is easy: https://www.mathworks.com/help/matlab/import_export...

5 years ago | 0

Answered
How to iterate over cell array, creating only unique combinations of cells
data = {1,2;3,4}; n = numel(data); m = nchoosek(1:n,2) % each row is one combination pair. out = data(m) % output [idr,idc] ...

5 years ago | 0

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Answered
how to arrange data into array
Without an intermediate sparse array: R = [1;2;3;4]; C = [10;11;13;15]; V = [1e-5;5e-5;10e-5;15e-5]; % S = max([R,C],[],1);...

5 years ago | 0

Answered
How to count the number of times that values changes?
A = [1;1;1;2;1;3;3;1;1] B = [NaN;cumsum(diff(A)~=0)]

5 years ago | 3

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Answered
Getting rid of loops
Logical indexing is much simpler than using loops: idx = A<1 & A>0; A(idx) = B(idx); A(A<C) = NaN; idy = B>100 | B<0; ...

5 years ago | 0

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Answered
How to conditionally merge rows in a table
lat = [45.67, 45.67, 56.89, 78.61]'; lon = [-66.45, -66.45, -65, -67]'; id = [202, 202, 201, 200]'; key = {'A', 'B', 'C', 'C'...

5 years ago | 0

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Answered
Increment components of vector till a desired limit
for k = 6:100 % or 105 maybe... you can check this. v = reshape(hankel(1:5,5:k),1,[]) end

5 years ago | 2

Answered
Expected one output from a curly brace or dot indexing expression but there were 2 results
For your code to work the index tn4 must be scalar, but the error message tells us that it is not. Compare: S(1).blah = 1:3; ...

5 years ago | 1

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Answered
behaviour of nargout for anonymous functions
You get two different answers because you are testing two different functions: the function handle to addOne an anonymous func...

5 years ago | 0

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Answered
Combining cell arrays with empty doubles
% slightly more complex example data: a = {[],1;[],[]}; b = {[],[];2,[]}; c = {[],[];[],NaN}; % tmp = cat(3,a,b,c); [~,idp...

5 years ago | 2

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Answered
How to properly extract dataset and load in new file? Keep getting error.
There is no data field because you saved the array using the name Xs. So you need to use the field Xs (and get rid of the superf...

5 years ago | 0

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Answered
How do I insert data into new format based on row positions?
data = [8; 7; 1; 5]; datarowpositions = [0; 0; 0; 4; 0; 1; 0; 2; 0; 0; 3; 0]; desired = datarowpositions; desired(datarowposi...

5 years ago | 0

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Answered
naming using a string function
The MATLAB approach: N = numel(files); C = cell(1,N); for k = 1:N F = fullfile(files(k).folder,files(k).name); C{k}...

5 years ago | 0

Answered
how to iterate?
I don't see why any iterations are required, vectorized code will do this quite easily: A = [-120449852, -107496428]; B = [-10...

5 years ago | 0

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Answered
Repeat a string with a delimiter
A = 'abc'; B = join(repmat({A},1,3),', '); B = B{1} C = join(repmat(string(A),1,3),', ') % string output! D = sprintf('%1$s,...

5 years ago | 0

Answered
Remove parenthesis and the contents inside from a string
A = 'abc (ABC)'; B = regexp(A,'^\w+','once','match')

5 years ago | 0

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Answered
Programmatically change function input
Using a character vector is entirely the wrong approach. The correct approach is to use a comma-separated list: tt = synchroniz...

5 years ago | 0

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Answered
how can I display 3 row vectors as column vectors in front of eachother using fprintf?
a = [1,2,3]; b = [11,22,33]; c = [111,222,333]; fprintf('%d %d %d\n',[a;b;c])

5 years ago | 0

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Answered
Find rows in cell for each array between two values and create new cell with the values you just found
Using linear indexing to access the cell arrays only requires one loop: n_new = cell(size(n)); for k = 1:numel(n) idx = f...

5 years ago | 0

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Answered
How to multiply matrices using for loop?
z = 1; for k = 1:100 y = x.out(:,:,k); w = diag(fastexp(x.db(k))); z = z * y * w * y'; end

5 years ago | 0

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Answered
Create a new array by summing the columns of old array
The MATLAB approach, where M is your matrix: new = M(:,1:2:end) + M(:,2:2:end);

5 years ago | 0

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Answered
Reorder Matrix Rows from the row with the most nonzero elements to the row with the least nonzero elements
A = [... 0 1 2 4 7 12 17 22 27 33 42 0 0 1 3 6 11 16 21 26 34 43 0 1 2 4 7 12 17 22 28 35 44 0 0 1 2 8 13 18 23 29 36 45...

5 years ago | 0

Answered
extract decimal number from a file name
The most efficient solution by far: C = {'NNN_2.5C3C_BlaBla'; 'NNN_2.5C3.5C_BlaBla'}; M = sscanf([C{:}],'%*[^_]_%fC%fC_',[2,In...

5 years ago | 0

Answered
string to double conversion
Current = '+5.004100E-07,+5.006900E-07,+5.003900E-07,+5.003100E-07,+5.003300E-07,+5.003700E-07,+5.004800E-07,+5.003200E-07,+5.00...

5 years ago | 0

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Answered
Undefined function 'cost' for input arguments of type 'char'.
cost I(:,i)=alpha+(beta.*P)+(gamma.*P.*P); % ^ remove this space character total Cost_iteration(i,1)=sum(costI(:,i)); % ...

5 years ago | 0

Answered
How can I create a list of files of the defined typ that are included in the folder?
folder = '...'; typ = 'm'; T = sprintf('*.%s',typ); G = genpath(folder); F = regexp(G,'[^:]+','match'); C = cell(size(F)); ...

5 years ago | 1

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Answered
Why I cannot create a function handle composed of a sum of function handles in a cell with a vector input?
x = 0:0.01:pi; %Input vector n = 5; %order m = 0:n; %Positive modes %My exam...

5 years ago | 0

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Answered
??!>>>Error using fprintf Invalid file identifier. Use fopen to generate a valid file identifier.
Do NOT use the installation folder of ANY application for your current folder: Trying to save/alter files in the installation...

5 years ago | 0

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