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Can't seem to replace values in matrix meeting criteria, although the correct row,col coordinates are found
Use SUB2IND: idx = sub2ind(size(img),row,col); img(idx) = 1; The section "Indexing Matrices with Two Subscripts" here: https...

circa un mese fa | 0

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Compare two files and remove any lines in the second file when they match values found in the first file
lines1 = [1,2,3,4;2,4,6,7;2,5,7,8;6,7,4,6] lines2 = [2,4,6,7;2,5,7,8] out = setdiff(lines1,lines2,'rows')

circa un mese fa | 0

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A more efficient or compact way to sort strings that contain dates
a = [... '123_abc_01_202403020000_202403022359.txt'; '123_abc_01_202403040000_202403042359.txt'; '123_abc_01_2024...

circa 2 mesi fa | 1

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Portion of code containing my custom functions is hidden and I cant access it.
The feature is called code folding: https://www.mathworks.com/help/matlab/matlab_prog/edit-and-format-code.html#brazeg3-1 http...

circa 2 mesi fa | 1

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How can I access the value of a string variable? I need to construct a file path from a string variable, but keep getting the variable name and not the string.
It works perfectly, exactly as you showed in your question: directory_name = "directory1"; f = fullfile('/Users/me/ch4', direc...

circa 2 mesi fa | 1

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Appending data when extracting nested fields as individual variables
The simple and efficient MATLAB approach using two comma-separated lists (no loops are required!): first100 = load('frames.mat'...

circa 2 mesi fa | 0

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Natural-Order Filename Sort
Alphanumeric sort of filenames or filepaths, with customizable number format.

circa 2 mesi fa | 347 download |

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Natural-Order Row Sort
Alphanumeric row sort of a cell/string/categorical/table array, with customizable number format.

circa 2 mesi fa | 14 download |

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Customizable Natural-Order Sort
Alphanumeric sort of a cell/string/categorical array, with customizable number format.

circa 2 mesi fa | 49 download |

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Custom List / Arbitrary Sequence Sort
Sort a text array into the order of custom lists / arbitrary text sequences. Sort words with Latin-, Greek-, and Cyrillic-based ...

circa 2 mesi fa | 2 download |

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char array to numeric array
"I was wondering if there was a better way of doing this?" Of course, use READTABLE (or READMATRIX): unzip tab_file_table.zip ...

circa 2 mesi fa | 0

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I'm trying to convert the text into binary and then i want to make the 4 bits chunks.
message = 'Hello world'; A = dec2bin(message, 8) B = reshape(A.',1,[])

circa 2 mesi fa | 0

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How to stop double printing text using sprintf ?
Problems: 1- This is the relevant code: VariantModel = compose('%d', 1:height(VariantIDPassed)); .. writefile(VariantModel{i...

circa 2 mesi fa | 0

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Risposto
How do I fix my Nan issue within a recursive function?
Replace this (which returns logical indices): FirstID = M==-1; with this (which returns the linear index): FirstID = find(M==...

circa 2 mesi fa | 0

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How to import multiple .mat files to workspace?
The basic problem is that you are not supplying the filepath to LOAD. You can improve your code as well. I am guessing that you...

circa 2 mesi fa | 0

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Error in code, parenthesis perceiving as comment for some reason
Explanation: for some reason you seem to be running this literal code: Q_est = updateQ(...) instead of calling UPDATEQ etc. wi...

circa 2 mesi fa | 1

Risposto
smart function to switch functions
You could use STR2FUNC: str = 'ode23'; odesolver = str2func(str); odesolver(@fun,..) or simply use FEVAL: feval(str,@fun,.....

circa 2 mesi fa | 0

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Reshaping a matrix based on the first row
A = [270,270,270,271,272,272,273,273,273]; B = [ 12, 2, 3, 14, 5, 2, 6, 8, 11]; X = ~isnan(A); C = findgroups(A(X)); R...

circa 2 mesi fa | 0

Risposto
sorting non-exact x/y data into rows and columns, typewriter style
x = [1.01,2.01,1.02,2.02]; y = [1.01,1.02,2.01,2.02]; m = [x(:),y(:)]; % simpler [~,id] = sortrows(round(m),[-2,+1])

circa 2 mesi fa | 0

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How can I extract an array of numbers from a text-formatted cell array of strings.
C = {'20s';'15m';'';'24s';'';'44s';'3h';'40m';'20s';'';'14s'} F = @(t)prod(sscanf(t,'%f')); V = cellfun(F,regexprep(C,{'h$','m...

circa 2 mesi fa | 1

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Risposto
Update an Excel file after each Matlab calculation
You can use a COM server to trigger Excel to recalculate the worksheets: https://www.mathworks.com/matlabcentral/answers/100938...

circa 2 mesi fa | 0

Risposto
Error using (function_name). Too many output arguments.
You did not define the function to return any output arguments: function calcolo_cp(T,fluido) If you intended to return e.g. C...

circa 2 mesi fa | 2

Risposto
Vectorize nested for loops with indices and subscripts
A = [1,2,0,2;2,1,3,0;0,3,1,3;2,0,3,1] matArray = unifrnd(-1,1,[4,4,10]) Method one: [X,Y] = meshgrid(1:size(matArray,3),A(:))...

circa 2 mesi fa | 0

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Can a custom argument validation function alter the field names of its input variable?
The hard part is not validation, but mapping random fieldnames to your desired fieldnames. Notet that argument validation does ...

circa 2 mesi fa | 0

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How to write all cells of structure in excel sheet ?
Why is a scalar structure nested inside a (pointless) scalar cell array? Why are lots of scalar numerics stored inside a cell a...

circa 2 mesi fa | 2

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Risposto
How to define variable names for resampling?
You should: replace the ISMEMBER with ENDSWITH get rid of those asterisks For example: endsWith(files(i+j).name, {'_B03_10m....

circa 2 mesi fa | 0

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How should I fix my regular expression to parse this txt file?
"It seems that my regular expression is way too broad and causing this problem." There are several locations where your regular...

2 mesi fa | 0

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What is the equivalent datetime() call to the clock() function?
Note that DATETIME is an object with properties, so (depending on your requirements) accessing its properties is a simple option...

2 mesi fa | 0

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How can I convert matrix to cell?
https://www.mathworks.com/help/matlab/ref/mat2cell.html A = reshape(1:40000,100,400)'; C = mat2cell(A,4*ones(1,100),100)

2 mesi fa | 0

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How to name and save the results using the name of imported file ?
A much better approach is to store the data in e.g. a structure array: P = 'absolute or relative path to where the files are sa...

2 mesi fa | 0

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