Réponse apportée
Faster alternate to all() function
N = 10000; varname = rand(246658,4) idxkeep = randi(size(varname,1),1,N); tic for i=1:N idx = idxkeep(i); idy = ...

plus d'un an il y a | 1

| A accepté

Réponse apportée
Finding mean value over certain amount of values in a matrix
Avoid SQUEEZE. More robust: A = [1,2,3;4,6,8;7,12,7;14,4,23] N = 2; C = size(A,2); B = reshape(mean(reshape(A,N,[],C),1),[],...

plus d'un an il y a | 2

Réponse apportée
subdivide numbers inside a file .xlsx
Simpler: C = readcell('file.xlsx'); M = str2double(split(C(6:end),', ')) T = array2table(M, 'VariableNames',split(C(5),', '))...

plus d'un an il y a | 0

Réponse apportée
Your variables are reaching 2GB limit,revert to save -v7.3 This will be slower but avoids matlab not saving the data.
"How should I resolve this?" Specify the version when calling SAVE: save(.. , '-v7.3')

plus d'un an il y a | 0

Réponse apportée
How to open and modify .dat file
unzip nema.zip fid = fopen('nema.dat','rb'); arr = fread(fid,'int8'); fclose(fid); dim = [364,364,110]; arr = reshape(arr,d...

plus d'un an il y a | 0

| A accepté

Réponse apportée
unique across tables within table
U = unique(vertcat(RawFileIndex.Parameters{:}).ID)

plus d'un an il y a | 0

| A accepté

Réponse apportée
Finding multiple Matrix in a txt file
"For example (in my own dumb coding brain) I would like matlab to "Search a txt file that has a certain name that the user can s...

plus d'un an il y a | 1

Réponse apportée
how to make the numbers on the matrix with alternative sign?
n = 5; m = toeplitz([2,1,zeros(1,2*n-2)]) .* -(-1).^gallery('minij',2*n)

plus d'un an il y a | 0

Réponse apportée
Adding column in cell array before converting to a matrix.
Here are a couple of approaches. First lets create some fake data: C = {randi(9,3,2),randi(9,2,2),randi(9,4,2)} C{:} Method o...

plus d'un an il y a | 0

| A accepté

Réponse apportée
readtable struggling to interpret spreadsheet as numbers
"readtable struggling to interpret spreadsheet as numbers" Unfortunately due to that broken CSV format we need to import everyt...

plus d'un an il y a | 0

| A accepté

Réponse apportée
How to convert datetime into a number?
txt = '08-Jan-2016 05:40:00' dtn = datetime(txt,'InputFormat','d-MMM-y H:m:s', 'Format','yyyyMMddHHmmss') https://www.mathwork...

plus d'un an il y a | 0

Réponse apportée
Creation of binary coded image from a matrix
A = [0,2;1,3;7,14] Method one: BLOCKPROC (requires image toolbox, probably not very fast): F = @(s)reshape(dec2bin(s.data,4)-'...

plus d'un an il y a | 1

Réponse apportée
How to convert numbers to text
v = fix((0:14)./5).' w = char(v+'x')

plus d'un an il y a | 0

| A accepté

Réponse apportée
How to search for table column via a string
y = rawTable.(string); % ^ ^ https://www.mathworks.com/help/matlab/matlab_prog/access-data-in-a-table.html

plus d'un an il y a | 1

| A accepté

Réponse apportée
How to use indices of one matrix as entries of another matrix?
Fake data: M1 = reshape(randperm(256)-1,16,16); Y = find(M1==hex2dec('34')); M1([1,Y]) = M1([Y,1]) Convert: C = 1+mod(M1.',...

plus d'un an il y a | 0

| A accepté

Réponse apportée
Save in an array lines after the appearance of a text pattern
txt = fileread('File.txt') rgx = 'Cell\s*$Angstrom$:(\s+\S+){9}'; tkn = regexp(txt,rgx,'once','tokens'); mat = sscanf(tkn{1...

plus d'un an il y a | 0

Réponse apportée
Reading unformat text file with strings and numbers
In lieu of a sample data file provided by the OP I created my own... Lets try importing it using READTABLE and a few options: ...

plus d'un an il y a | 1

| A accepté

Réponse apportée
How can I iterate through an array using a for loop?
Given an array of paths: C = {'C:\Users\me\Documents\My Info','C:\Users\me\Documents\My data'}; F = @(p)dir(fullfile(p,'*.xlsx...

plus d'un an il y a | 0

Réponse apportée
Store a script as a function
If you want to call RANDOMSTART from e.g. another function or from the command line then it must be a function. What you have is...

plus d'un an il y a | 0

| A accepté

Réponse apportée
Collect information of a file with the same kind of text pattern
txt = fileread('file.txt'); rgx = 'Cr(\d+)\s*Cr(\d+)\s*$\s*(\S+),\s*(\S+),\s*(\S+)$.+@.*\n.+\n.+\n[^:]*:\s*\(\s*(\S+)\s+(\S+)...

plus d'un an il y a | 2

| A accepté

Réponse apportée
I am getting "Conversion to logical from table is not possible." error, how do you solve it?
"How can I solve this problem?" Use the correct indexing: c0 = Table(ind_coeff,2); % what you are doing: return another table ...

plus d'un an il y a | 0

| A accepté

Réponse apportée
Importing files in bulk chnages table columns to NaNs
Avoid the inner loop: T = load('T.mat').T if width(T)>=37 V = str2double(string(T{:,37})); V(isnan(V)) = 0; T =...

plus d'un an il y a | 0

| A accepté

Réponse apportée
order using first column in array cell
The basic problem is that you are storing scalar strings in a cell array. This should be avoided: "If you create variables that ...

plus d'un an il y a | 0

| A accepté

Réponse apportée
Extract two floating point numbers from a string
T = '23.047°S 67.782°W 9.876°N 5.432°E' ; V = sscanf(regexprep(T,{'(\S+)°[SW]','(\S+)°[NE]'},{'-$1','+$1'}),'%f')

plus d'un an il y a | 1

Réponse apportée
Parse csv with complex numbers written by Python numpy
Forget about fiddling about with strings. Define the parentheses as delimiters and import as numeric: format short G M = readm...

plus d'un an il y a | 0

| A accepté

Réponse apportée
Taking outer product of two matrices
"However, the ⊗ operator between ∇ and u isn't the simple multiplication operator *." The Wikipedia page you linked to states "...

plus d'un an il y a | 0

| A accepté

Réponse apportée
Not enough input arguments
"I am a little perplexed by this warning from matlab: "Not enough input arguments" for my following code" Lets take a look at h...

plus d'un an il y a | 0

| A accepté

Réponse apportée
why does it change the number when using VPA?
"why does it change the number when using VPA?" It doesn't. That "loss of digits" is completely unrelated to VPA. The change o...

plus d'un an il y a | 2

| A accepté

Réponse apportée
How can I use the data of a set of matrices labelled in order
"Thank you also for pointing about about dynamic variables, but as a beginner I am lacking options." You decided to use LOAD, s...

plus d'un an il y a | 0

Réponse apportée
i have a csv with data separated with commas and columns also are separated with commas
T = fileread('piloto.csv') T = regexprep(T,',(\d+e)','\.$1') % you could also save this to a proper CSV file C = textscan(T,''...

plus d'un an il y a | 0

| A accepté