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Stephen23


Active since 2014

Suspensa Vix Via Fit

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Answered
How to take average of such an array?
Z = {[1,0,2,2,1,1,3,1,1,0],[2,1,0,0,0,1,0,2,0,0];[2,2,3,3,1,3,3,2,1,0],[2,2,0,0,1,2,0,2,0,0];[2,3,3,3,2,3,4,2,1,0],[3,5,0,0,1,3...

etwa 13 Stunden ago | 0

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Answered
Why does not string(f.name) work, f = dir(folder)?
"Why does not string(f.name) work, f = dir(folder)?" Dot indexing into the structure f f.name generates a comma-separated lis...

ein Tag ago | 1

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Answered
Extracting and saving frames from a video with automatic number '0001,0002,0003' instead of 1,2,3 etc
V = VideoReader("Video1.mp4"); for k = 1:V.NumFrames A = readFrame(V); F = sprintf('%05d.jpg',k); imwrite(A,full...

2 Tage ago | 0

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Answered
Number of .mat files into single .mat file
Fake data: X = 1:3; save data1.mat X X = 4:6; save data2.mat X X = 7:9; save data3.mat X clear Joining file data: N = 3...

2 Tage ago | 0

Answered
Delete duplicate cell in a cell of complex double.
As far as I can tell, you only want to remove local duplicate (i.e. only checking within the same cell of F): F = {{[0.04,0.2,0...

2 Tage ago | 1

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Answered
Extract the Transport names from the list of adapter names
Oneliner :) txt = 'Physical Address Transport Name =================== =====...

3 Tage ago | 1

Answered
Can I parse a text file with dates and data using readmatrix or readtable?
"but I don't know how to specify the datetime in the call. I don't understand the matlab instructions for these." READTABLE, RE...

3 Tage ago | 0

Answered
How to find text structure within string array?
str = "moose_0_-1_6_Coordinates-8580_138864_ 30-01-21_17-48-22_0.xml"; rgx = '\d+-\d+-\d+_\d+-\d+-\d+'; out = regexp(str,rgx,'...

3 Tage ago | 0

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Answered
Extract fields from structure
A.C.XX_YY1 = 5; A.C.XX_YY2 = 10; A.C.ZZ = 3; B = A.C; F = fieldnames(B); X = startsWith(F,'XX_YY'); B = rmfield(B,F(~X))

4 Tage ago | 0

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Answered
Copying and renaming multiple files from multiple directories into one directory
This should get you started: P = 'absolute or relative path to the source parent directory'; Q = 'absolute or relative path to...

6 Tage ago | 0

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Answered
How to avoid "NaT" when converting a cell into datetime ? (Or: how to add missing parts of datetime ?)
"How to avoid "NaT" when converting a cell into datetime ?" Convert each cell individually. Certainly not as efficient as one D...

6 Tage ago | 0

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Answered
how to prealloacte and store values in a character array?
I am guessing that your strings have different lengths on different loop iterations, in which case it mght not be obvious how to...

6 Tage ago | 0

Answered
How to find out number of Fridays in a month?
Here is a really simple approach using CALENDAR(): M = calendar(2022,8); N = nnz(M(:,6)) Otherwise you could try using a DATE...

7 Tage ago | 0

Answered
How do I copy some files to another folder?
"I guess the filename cannot be a string..." The filenames certainly can be string. The problem is the you are using command s...

7 Tage ago | 0

Answered
How to delete a duplicate cells?
F = {[3,8;6,4],[6,9;7,3],[3,8;6,4],[6,9;7,3]}; F{:} for ii = numel(F):-1:2 for jj = 1:ii-1 if isequal(F{ii},F{jj...

7 Tage ago | 1

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

8 Tage ago | 1

Answered
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...

8 Tage ago | 0

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Answered
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...

8 Tage ago | 0

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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 ...

8 Tage 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')

9 Tage ago | 0

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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)

9 Tage 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...

9 Tage ago | 0

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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)) = []

9 Tage ago | 0

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Answered
How to convert negative numbers in parentheses (bank-formatted text) to numbers with minus sign?
S = ["(1,234)";"2,345,678";missing;"(1,234.56)"] N = str2double(strrep(strrep(S,')',''),'(','-'))

10 Tage ago | 1

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);

10 Tage 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...

15 Tage 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 ...

16 Tage 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...

16 Tage 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...

17 Tage ago | 2

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

17 Tage ago | 0

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