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Stephen23


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Risposto
How to use Unicode numeric values in regexprep?
inp = 'Häagen-Dasz'; baz = @(v)char(v(1)); % only need the first decomposed character. out = arrayfun(@(c)baz(py.unicodedata.n...

circa 8 ore fa | 1

Risposto
Cutting (dividing) a matrix into a specific number of rows.
A = [11,12,13;21,22,23;31,32,33;41,42,43;51,52,53;61,62,63;71,72,73;81,82,83]; B = reshape(permute(reshape(A,[],2,3),[1,3,2]),[...

1 giorno fa | 2

Risposto
Why does MATLAB not finding a element from my matrix?
Testing for exact equivalence of binary floating point numbers should be avoided. Compare the values, are they actually the sam...

1 giorno fa | 1

Risposto
Question: Structure Array Generation and Dimensions Manipulation
Simple solution: new = [newpop(:);pop(:)] However if you want to your code to be more robust, then you need to preallocate NEW...

1 giorno fa | 0

| accettato

Risposto
Printing all outputs of the function that has been solved via ode45
This questions gets asked regularly on this forum: users often imagine that there must be some easy way to get some values out o...

2 giorni fa | 1

| accettato

Risposto
Index exceeds the number of array elements error when using fsolve
Your x0 is a two-element vector, so you told FSOLVE to call the function handle with a two-element vector. But then inside the f...

2 giorni fa | 0

| accettato

Risposto
How do I plot a tent-map?
"How do I plot a tent-map?" Following the basic definition of tent map: https://en.wikipedia.org/wiki/Tent_map X = 0:0.01:1; ...

3 giorni fa | 1

| accettato

Risposto
Impossible to set VariableTypes as 'double' for complete array and readtable function
Try something simpler and let READTABLE do the work for you: T = readtable('test_log_1.csv', 'CommentStyle','#', 'VariableNamin...

3 giorni fa | 1

| accettato

Risposto
Replacing numerical values in table with string
This is MATLAB, so forget about using a loop like that. Either replace the entire column at once or use e.g.: https://www.mathw...

6 giorni fa | 1

Risposto
Sorting files in struct according to time in filename
You could download my FEX submission NATSORTFILES(): https://www.mathworks.com/matlabcentral/fileexchange/47434-natural-order-f...

7 giorni fa | 0

Risposto
How to extract data from a file, and form a column vector?
Note that copy-and-pasting blocks of code like that... is not a generalized approach to writing code. Best avoided. Rather than...

10 giorni fa | 1

Risposto
Generate list of frequencies evenly spaced in logarithmic plot
X = logspace(log10(0.2),log10(628),8) Y = sqrt(X); semilogx(X,Y,'-*')

10 giorni fa | 1

| accettato

Risposto
Extracting a double array from within a struct
"So in the end I will have an 18x297 array." Because there are a different number of columns in each matrix you will need to EI...

10 giorni fa | 0

| accettato

Risposto
How can I get arguments in my MATLAB batch script to use a series of files with different character strings?
S = dir('/location/*/physio/*_PULS.log'); for k = 1:numel(S) F = fullfile(S(k).folder,S(k).name); T = readtable(F); %...

11 giorni fa | 0

| accettato

Risposto
raising an element of a vector to a power gives complex number, but it should be real number
"Oh okay I guess I got it..." No guessing is required, this is explained by the rules of operator precedence: https://www.math...

12 giorni fa | 2

Risposto
How to import text data with different column lengths without having NaN
Keeping the corresponding pairs of columns together: T = readtable('test.txt', 'Delimiter',',') for k = width(T):-2:1 T =...

13 giorni fa | 0

Risposto
Matrixwise subtraction yields vector - how to reshape to original logical matrix?
A = rand(3); B = rand(3); X = A>=0.5; [~,C] = find(X); M = accumarray(C,A(X)-B(X),[],@mean).'

13 giorni fa | 0

| accettato

Risposto
Observing Error while reading .csv files
Your code is fragile and complex. You should aim to simplify it and make it more generalised: avoid having lots of hard-coded t...

13 giorni fa | 1

Risposto
Too many input arguments error when cell2mat and mean functions are used
V = [23;27;26;17;7]; N = numel(V); C = nan(N,2); for k = 1:N M = vertcat(iniclu{k,1:V(k)}); % comma-separated list ...

15 giorni fa | 1

| accettato

Risposto
Counting First digit of a certain number
t1 = [0, 0; 0, 1; 0, 1; 1, 1; 1, 0; 0, 0; 0, 1]; t2 = [1, 1; 0, 1; 0, 1; 0, 1; 1, 1; 0, 1; 1, 1]; t3 = [0, 1, 1; 1, 0, 0; 1, 1...

16 giorni fa | 2

| accettato

Risposto
Loop for Concatenating files *.CSV
V = vertcat(Folder{10:-1:1}); https://www.mathworks.com/matlabcentral/answers/1656435-tutorial-comma-separated-lists-and-how-to...

16 giorni fa | 0

| accettato

Risposto
Sequencing data in the loop (*.CSV files)
"How can I keep the data in sequnce." Either use sufficient leading zeros in the filenames OR sort the filenames alphanumerical...

16 giorni fa | 1

| accettato

Risposto
How to avoid creating 1x1 struct?
b = linspace(..); e = spline(..); newStruct = struct('b',num2cell(b),'e',num2cell(e)); "I get this which serves no purpose wh...

19 giorni fa | 0

Risposto
How to have a code restart with a different file after finishing with a different file?
"However it combined all of the files into one output file, my new question is how to create a new txt file for each csv file th...

19 giorni fa | 0

| accettato

Risposto
Cannot find file that exists for second variable
Your code is looking for a file literally named TIMESERIES: if ~exist('timeseries','file') whereas what you want to do is use ...

19 giorni fa | 0

| accettato

Risposto
How to solve incosistent scientific format ?
Do not convert to text and compare text. Compare the numeric values. Best of all by comparing the absolute difference against a...

20 giorni fa | 1

Risposto
Function with 3 input arguments
"I just know I am missing something fundamental here..." Exactly the same fundamental concept as your previous questions: defi...

23 giorni fa | 1

| accettato

Risposto
How do I insert a substructure within an existing structure at a specific index
"What is the simplest way to do this?" With a structure array this would be easy with some indexing. It would also make accessi...

24 giorni fa | 0

| accettato

Risposto
Confusing sprintf() behavior
"Is this a bug?" No. SPRINTF and FPRINTF apply the entire format string to the data values, repeating the entire format string...

25 giorni fa | 1

| accettato

Risposto
concatenate multiple 'OutputFcn' options in odeset?
Define a wrapper function to call whatever functions you want. Note that the wrapper function itself will need to fulfill the r...

28 giorni fa | 1

| accettato

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