Answered
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),[],...

1 year ago | 2

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

1 year ago | 0

Answered
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')

1 year ago | 0

Answered
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...

1 year ago | 0

| accepted

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

1 year ago | 0

| accepted

Answered
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...

1 year ago | 1

Answered
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)

1 year ago | 0

Answered
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...

1 year ago | 0

| accepted

Answered
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...

1 year ago | 0

| accepted

Answered
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...

1 year ago | 0

Answered
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)-'...

1 year ago | 1

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

1 year ago | 0

| accepted

Answered
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

1 year ago | 1

| accepted

Answered
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.',...

1 year ago | 0

| accepted

Answered
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...

1 year ago | 0

Answered
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: ...

1 year ago | 1

| accepted

Answered
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...

1 year ago | 0

Answered
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...

1 year ago | 0

| accepted

Answered
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+)...

1 year ago | 2

| accepted

Answered
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 ...

1 year ago | 0

| accepted

Answered
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 =...

1 year ago | 0

| accepted

Answered
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 ...

1 year ago | 0

| accepted

Answered
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')

1 year ago | 1

Answered
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...

1 year ago | 0

| accepted

Answered
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 "...

1 year ago | 0

| accepted

Answered
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...

1 year ago | 0

| accepted

Answered
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...

1 year ago | 2

| accepted

Answered
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...

1 year ago | 0

Answered
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,''...

1 year ago | 0

| accepted

Answered
extract multiple slices of difference sizes from a vector
The MATLAB approach: A = [1 4 6 5 4 8 7 8 6 4]; N = [2 3 5]; C = mat2cell(A,1,N); Checking: C{:}

1 year ago | 0