Community Profile # Stephen23

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Split string in two strings
str = ["van Donk","Gerritsen","kooijman","Verliefde","Floré","Pengel","aan de Wiel","van der Hoeven","Hop","Boer","van Ewijk"] ...

alrededor de 4 horas ago | 1

Split column by text and numbers
str = ["54","33","104A"]; tkn = regexp(str,'^(\d+)\s*(\w*)\$','tokens','once'); tkn = vertcat(tkn{:}); num = tkn(:,1) let = t...

alrededor de 6 horas ago | 0

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Store cell arrays composed of datetimes and numbers
Your loop works for me (with suitable preallocation): store = cell(5,2); % preallocate! for i = 1:5 dt = datetime(2022,ra...

alrededor de 6 horas ago | 0

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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 ...

alrededor de 9 horas ago | 0

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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')

alrededor de 11 horas ago | 0

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)

alrededor de 23 horas ago | 0

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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...

alrededor de 23 horas ago | 0

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)) = []

alrededor de 23 horas ago | 0

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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);

2 días ago | 0

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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...

7 días 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 ...

8 días 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...

8 días 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...

9 días ago | 2

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

9 días 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...

12 días 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...

12 días 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);

12 días 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...

12 días ago | 1

Logical array indexing unexpected behaviour.

13 días 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...

15 días 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...

19 días ago | 1

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

20 días 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{:}

20 días 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....

21 días 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...

21 días 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')

21 días ago | 1

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

21 días 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...

21 días ago | 0