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How can I sort a string both alphabetically and numerically?
By far the simplest approach is to download the NATSORT function: https://www.mathworks.com/matlabcentral/fileexchange/34464-cu...

3年弱前 | 0

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How to access data of regexp output (without temporary variable)?
The general answer to the question has not changed much since 2012. Using a temporary variable is not "less efficient" as many ...

3年弱前 | 1

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How to sorting categorical array for plotting
By default the categories are sorted into character order, not alphanumeric order. S = "M"+(1:10); A = categorical(S) C = cat...

3年弱前 | 0

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Select last numeric character(s) of the string
"How can I extract the last numbers occurring at the end of different strings?" X = "sucrose-10"; Y = str2double(regexp(X,'[-...

3年弱前 | 2

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Compensate the vector with the last entry
V = [2,4,7,3]; K = 8; V(end+1:K) = V(end)

3年弱前 | 0

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why the code is incorrect? and where is incorrect? Matlab told me the function is incorrect, why?
"why the code is incorrect?" FZERO expects its first input argument to be a function handle: https://www.mathworks.com/help/ma...

3年弱前 | 0

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find equal value into cell
Forget about loops and FIND and ISMEMBER and other fiddling around, you should be using OUTERJOIN command. If your data are nice...

3年弱前 | 1

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Using App Designer, reading a numeric edit field and creating a double array from the inputs?
The reason why it is a cell array is because you told MATLAB to make a cell array. Basically you are doing this: fc1 = 1; fc2 ...

3年弱前 | 0

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Getting all values in the same field for different entries within a structure
"Is it possible to get all the different math grades in an array without a for-loop?" Of course. The simple and efficient MATL...

3年弱前 | 0

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How to change HH:mm:ss:SSS to HH:mm:ss.SSS for a column?
time = {'01:18:34:754'; '13:04:19:999'}; data = rand(2,1); T = table(time,data) tmp = regexprep(T.time,':(?=\d{3})','.'); T....

3年弱前 | 0

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error when using '>' , Operator '>' is not supported for operands of type 'table'.
if significant{i,j} > 2 % ^ ^ https://www.mathworks.com/help/matlab/matlab_prog/access-data-in-a-table.html

3年弱前 | 0

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Copy variables into excel smoothly
"So I wonder how I can work around this?" Don't copy-paste data into Excel. The simple, easy, robust approach is to use WRITEMA...

3年弱前 | 1

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Fill a matrix with another buy keep the original size
A = zeros(5,5); B = rand(3,5); A(1:size(B,1),:) = B https://www.mathworks.com/help/matlab/getting-started-with-matlab.html

3年弱前 | 1

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Adding to existing date value
"Using caldays does not update the month" Yes, it does: dt = datetime(2023,3,27, 'Format','u-MM-dd') dt = dt+caldays(5) Appa...

3年弱前 | 0

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Why is NaN returned when I have all necessary input data?
"Does anyone see my mistake?" Your data has a range of approx 0.166: how many peaks do you expect to get with minimum peak prom...

3年弱前 | 0

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How do I change the name of a variable (actually value of a character array) inside a loop?
"I do not see any oher solution then to edit the name while in the loop." What you are asking is just to change some text. This...

3年弱前 | 0

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regexp string to numeric array
Assuming that every string contains exactly the same number of numeric data: str = {'bob22alice666buster2', 'donald42lisa00budd...

3年弱前 | 0

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finding a numeric pattern in a vector
Your basic concept is okay. You need to select an appropriate character match and quantifier. Note that the asterisk is actually...

3年弱前 | 0

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Merging Date and time
Rather than fiddling after importing, the best approach is to import the file correctly using READTABLE options, e.g.: fnm = 'L...

3年弱前 | 2

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Efficient way to convert m by n array into a single column table with each row containing n by 1 array?
A = [1 3 5; 2 6 7; 5 8 9; 3 2 1]; T = cell2table(num2cell(A.',1).')

3年弱前 | 0

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Rearrange cell array of strings based on occurrence in another cell array of string
Assuming that every text in B contains exactly one text from A, and that every text in A occurs in B: A = {'test1', 'test2', 't...

3年弱前 | 0

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I don't know how to use if function with or operator
The simple MATLAB approach: if any(data(i,1)==[0,0.0625,0.125,0.25,0.5,1,2,4,8,16,32]) or even simpler: if any(data(i,1)==[0,...

3年弱前 | 2

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readmatrix error: "filename" must be a string scalar or character vector.
Get rid of DIR from inside the loop. P = 'C:\Users\aasyuda\Documents\CV-EIS\aptamer-histamin\14April2023\14April2023\0p0001nM';...

3年弱前 | 0

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Writing txt files accurately with a restriction on the number of columns.
V = randi(123,1,23) T = sprintf('%g,',V); U = regexprep(T,'(.{1,13}),','$1\n'); % e.g. max 13 columns fprintf('%s',U) And if...

3年弱前 | 2

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How do I put spaces before a line in a txt file using strcat and fprintf?
STRCAT removes whitespace characters. The easy and robust approach is separate FPRINTF calls: fprintf(fid_wrt,' \n') fprintf...

3年弱前 | 0

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Generate comma separated list in single line of code?
A one-line approach that has been possible since R2019b: struct('x',{'A','B','C','D'}).x https://www.mathworks.com/help/releas...

3年弱前 | 0

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compare variable with different data types
Here is a neat approach that also allows case-insensitivity: x = 'Yes'; % x can be char, string, logical, or numerical if strc...

3年弱前 | 0

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Concatenate all arrays from a field in a structure
Where S is your structure: A = vertcat(S.A) B = vertcat(S.B) etc. https://www.mathworks.com/matlabcentral/answers/1656435-tu...

3年弱前 | 1

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Access and extract table array using for loop
"I need to extract (or access) the data using "for loop". For example, from "ECG", we can extract the data from 0 sec, 10 sec, 2...

3年弱前 | 0

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Merging empty vector with double
"if B is empty, I want it to be shown as 9 zeros" A = [1;2;3;4;5;6;7;8;9]; B = []; C = []; C(1:numel(A),1) = A; C(1:numel(B...

3年弱前 | 0

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