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Stephen23


Active since 2014

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Answered
Unable to use inner join function
Because the two tables use different names for the key variable, you will have to help INNERJOIN by telling it the names of the ...

circa 2 ore ago | 0

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Answered
how to write numbers with 10^ format in matlab?
str = strrep(sprintf('CC = %.1e',123456),'e','x10^') str = regexprep(sprintf('CC = %.1e',123456),'e(\D)0*(\d+)$','x10^$1$2')

circa 4 ore ago | 0

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)

circa 16 ore 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...

circa 16 ore 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)) = []

circa 16 ore ago | 0

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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 giorno 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 giorni 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 giorni 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...

8 giorni 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...

9 giorni ago | 2

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

9 giorni 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...

12 giorni 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...

12 giorni 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);

12 giorni 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 giorni 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 giorni 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 giorni 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 giorni ago | 1

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

20 giorni 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 giorni 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 giorni 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 giorni 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')

21 giorni 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 giorni 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 giorni 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...

22 giorni 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: ...

22 giorni 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)

22 giorni 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...

22 giorni 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 ...

22 giorni ago | 1

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