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Stephen23


Active since 2014

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Answered
How would I convert years to date time?
N = 2022.1765918316; D = datetime(fix(N),1,1) + calyears([0;1]); T = D(1) + diff(D)*mod(N,1)

ongeveer 4 uur ago | 0

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Answered
how to extract some data from this particular structure?
"Any ideas?" Two comma-separated lists will do it. For example, where C is your cell array: S = [C{:}]; % create non-scalar st...

ongeveer 4 uur ago | 0

Answered
How removing elements from vector?
c = [1,2,3] z = [10,9,1,4,11,2,6,3] x = setdiff(z,c,'stable') or z(ismember(z,c)) = []

ongeveer 5 uur ago | 0

Answered
Create a cell with row vectors as elements
F = @(varargin) vertcat(varargin{:}); C = arrayfun(F, A,B,C,D,E,F,G,H,I,J, 'uni',0);

1 dag ago | 0

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Answered
How do I insert a 1x1 cell array consisting of one vector into a table?
So far no one adressed your questions, nor explained the cause of your problem: the problem comes from the fact that you are usi...

7 dagen ago | 0

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Answered
How to concatenate multiple .mat files and generate a 3D matrix?
"I have 100 files ..." which are probably named using some sequential numbering, so you will need to take that into account in ...

7 dagen ago | 0

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Answered
Can you parameterize table lookup, i.e. t1.A(i) = t2.A(t2.B==t1.B(i)), so it does not require a loop?
If you stored the IDs as basic numeric arrays, rather than inefficiently as complex cell arrays containing lots of numeric scala...

7 dagen ago | 0

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Answered
Using structures with Functions
Rather than defining a scalar structure containing arrays, it looks like you should be using a non-scalar structure: https://ww...

8 dagen ago | 2

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Answered
Sort files in folder based on type
mkdir('ecfFiles') mkdir('txtFiles') movefile('*.ecf','ecfFiles') movefile('*.txt','txtFiles')

8 dagen ago | 0

Answered
How to interpolation between matrices
Assuming that you want to interpolate between the corresponding elements of those 4x4 matrices, then you could do something like...

11 dagen ago | 0

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Answered
How to map one array elements to another array elements?
Method one: indexing: num = [1,2,2,4,3,1]; val = [40,30,20,10]; out = val(num) Method two: interpolation: out = interp1(val...

11 dagen ago | 0

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Answered
Choosing a function handle from a group of function handles
s = sprintf('f_%d_%d',m,n); f = str2func(s);

11 dagen ago | 0

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Answered
Using contains() with dir() to search files in folder
Replace this comma-separated list files_in_folder.name with this cell array of filenames: {files_in_folder.name} https://www...

12 dagen ago | 1

Answered
Logical array indexing unexpected behaviour.
"I have been unable to find anything about this behavior so please enlighten me" https://www.mathworks.com/help/matlab/matlab_p...

13 dagen ago | 0

Answered
How to use Greek Letters in equation
The MATLAB approach: syms omega mu epsilon sigma k1 = omega .* sqrt((mu .* epsilon)/(2)) .* sqrt((1 + ((sigma)/(epsilon .* ome...

15 dagen ago | 0

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Answered
How can I change a matrix name in workspace during my script ?
The problem is caused by your data design, which forces meta-data into variable names. Forcing meta-data into variable names mak...

19 dagen ago | 1

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Answered
n E Z => sin(n*pi) = -1 ?
n = sym(100000000000000000000000000000) sin(n*pi)

19 dagen ago | 1

Answered
Sort values in a cell array
A = [90,45,38,51]; B = [8,1,8,3]; [~,~,X] = unique(B); C = accumarray(X,A(:),[],@(v){v}) Checking the content of C: C{:}

20 dagen ago | 1

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Answered
How to get coordinates of largest element in an array?
format long G M = [-2.37702213697260e+17,-2.33711662054550e+19,-615937600693473,-4.41919914907522e+19,-3.50291921355524e+20;-2....

20 dagen ago | 0

Answered
Warnings in Command Window
"I'm not if that's causing the problem." The problem is that you have added many subfolders to the MATLAB search path, that sho...

20 dagen ago | 2

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Answered
How do I sort all the columns of a table based on the first column?
Where T is your table: T = sortrows(T,'Date')

20 dagen ago | 1

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Answered
Reading numbers from String
Another approach: str = {'SRm40_','SRp5_'}; vec = str2double(regexprep(str,{'[A-Z_]+','m','p'},{'','-','+'}))

21 dagen ago | 0

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Answered
how to use an array as the input variable for function
You can use a comma-separated list: https://www.mathworks.com/help/matlab/matlab_prog/comma-separated-lists.html https://www.m...

21 dagen ago | 0

Answered
Organize matrix data into Bins using loop
"Is there a more efficient way to Bin this data???" Using inbuilt functions will be the most efficient approach, e.g. DISCRETIZ...

21 dagen ago | 0

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Answered
Read date from .CSV in native format of yy-mm-dd
As far as I can tell, it is not possible to specify the pivot year when calling READTABLE et al. But you can do it afterwards: ...

21 dagen ago | 0

Answered
How to reshape the three dimensional array in 2D matrix?
format compact A = cat(3,[8,2;3,9],[7,6;1,5]) M = reshape(permute(A,[2,1,3]),4,2)

21 dagen ago | 1

Answered
Compare two strings and count the same words
want = "Gruppe 1; Gruppe 2; Gruppe 3; Gruppe 3; ; Gruppe 6"; vgls = "Gruppe 1; Gruppe 2; Gruppe 3; Gruppe 4; Gruppe 5; Gruppe 6...

21 dagen ago | 0

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Answered
What character to type for [M,I] = min(A,[],'all',___)
In the MATLAB documentation underscore is used to indicate "any other valid options shown above, in this location". You do not ...

21 dagen ago | 1

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Answered
convert dates to specific format
My guess is that you have unfortunately stored each date as one numeric value, whose digits just happen to coincide with the dat...

22 dagen ago | 1

Answered
How to combine two one dimensional cell arrays into one two-dimensional cell array?
Where A and B are your cell arrays: C = cellfun(@horzcat,A,B,'uni',0)

22 dagen ago | 0

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