Community Profile # Stephen23

Active since 2014

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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...

5 days ago | 0

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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 ...

5 days ago | 0

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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...

6 days ago | 0

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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...

7 days ago | 2

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

7 days ago | 0

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...

9 days ago | 0

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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...

9 days ago | 0

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

10 days ago | 0

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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...

10 days ago | 1

Logical array indexing unexpected behaviour.

11 days ago | 0

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...

13 days ago | 0

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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...

17 days ago | 1

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

18 days ago | 1

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{:}

18 days ago | 1

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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....

18 days ago | 0

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...

18 days ago | 2

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

18 days ago | 1

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

19 days ago | 0

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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...

19 days ago | 0

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...

19 days ago | 0

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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: ...

19 days ago | 0

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)

19 days ago | 1

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...

20 days ago | 0

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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 ...

20 days ago | 1

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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...

20 days ago | 1

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)

21 days ago | 0

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I am trying to save struct to file and load it but when I load it I can't get field names

21 days ago | 0

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Splitting n by 1 matrix
A = transpose(1:12552); C = num2cell(reshape(A,24,[]),1) You can eaily access the content of the cell array C using indexing, ...

21 days ago | 2

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how to identify empty , non-empty char matrix condition?
M = [... '01:04:00' '01:03:00' ' ' '01:01:00']; strcmp('',cellstr(M)) % CELLSTR removes trailing whi...

21 days ago | 0

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