Answered
Extract data using variable names
https://www.mathworks.com/matlabcentral/discussions/tips/849901-tutorial-why-variables-should-not-be-named-dynamically-eval The...

1 year ago | 1

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Answered
Calculations involving indexed variables and creating data tables
Lets first create some fake data (because you did not upload any sample data): T = array2table(rand(7,4),'VariableNames',{'X','...

1 year ago | 0

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Answered
vpa does not work with the desired amount of digits
You need to set the digits first: https://www.mathworks.com/help/symbolic/digits.html The default is 32. "returns an answer w...

1 year ago | 3

Answered
Alligning the output using fprintf
I = [0.0039,0.0038,0.2,0.402,0.628,0.837,1.069,1.234,1.436,1.666,1.79,2.05,1.8,1.54,1.42,1.24,1.03,0.8,0.61,0.4,0.18,0,-0.19,-0....

1 year ago | 0

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Answered
xlsread multiple files from multiple folders
S = dir('Y:\Projects\*\*.xls'); W = 'Logic'; for k = 1:numel(S) F = fullfile(S(k).folder,S(k).name); [num,str] = xls...

1 year ago | 0

Answered
Convert a cell containing structs into a single Struct
Avoid evil EVAL(). Constructing text that looks like code and then evaluating it should definitely be avoided. Using comma-sepa...

1 year ago | 1

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Answered
how to load and read sparse matrix from txt file to MATLAB ?
N = {}; C = {}; F = fopen('Ksparse.txt','rt'); while ~feof(F) N{end+1} = strtrim(fscanf(F,'%[^[]')); C{end+1} = spc...

1 year ago | 1

Answered
vector conversion from a vector of numbers to a vector cell of chars.
Y = [0,4,6]; X = cellstr(string(Y)) X = arrayfun(@num2str,Y,'uni',0) X = compose('%u',Y(:)).' X = split(num2str(Y)).' X = n...

1 year ago | 1

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Answered
Matlab spdiags function not do what I expect
"Why is C so different from the previous two?" Look at your code! On this line you completely overwite B with a completely diff...

1 year ago | 0

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Answered
Hi everybody. I'm kind of new to MATLAb and looking to get more efficient in my coding. This feels clunky to me and I feel like I could definitely shorten it. Any ideas?
Vectorize your code: https://www.mathworks.com/help/matlab/matlab_prog/vectorization.html Engine = ["LO2/LH2";"LO2/CH4";"ST...

1 year ago | 0

Answered
How do I print one value on one row and another on the next
Taking a wild guess: fmt = '%s %10.8f %10.8f %10.8f\r\n'; for i = 1:2:size(unit,1) fprintf(fid_1, fmt,'B',unit(i+0,1:3));...

1 year ago | 0

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Answered
Create multiple subtables from multiple .tsv tables
"The following code does it only for the first .tsv file. Any hint to go recursively over the 120 .tsv files? " There is nothin...

1 year ago | 0

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Answered
How to import multiple .mat files into the same workspace
"The problem is that the content of the most recent .mat file overwrites the previous one since the name of the arrays is always...

1 year ago | 1

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Answered
Run for loop 1000 times and get distribution of results
T = 1; N = 2^8; dt = 1/N; r = 1; G = 0.7; e = 0.5; R = 2; Dt = R*dt; L = N/R; M = 1000; Xem = nan(M,L); for...

1 year ago | 0

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Answered
define an objective function with user defined number of variables in fminunc()
"How do I define the objective function fun() such that it automatically adapts to the number of variables." fun = @(x) sum(x.^...

1 year ago | 0

Answered
Trying to create a drop down that will open a new uifigure, nothing happens when I click confirm?
Simpler solution: get rid of dda.ItemsData. Then .Value is exactly the text that is shown in the menu. This is explained here: ...

1 year ago | 1

Answered
how to read the data of type a*b?
str = '1*5 5*4 6 8 3 12 -5 9*0 7*-1'; vec = sscanf(str,'%f%*[ *]',[1,Inf])

1 year ago | 0

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Answered
Error when creating a tensor from a for loop
"Can anyone tell me what is causing this problem?" Explanation Look at the values that you are using as indices. For the 1st c...

2 years ago | 0

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Answered
I want to build the matrix
m = 4; n = 3; A = randi(9,n) C = [{zeros(n),eye(n)},arrayfun(@(p)A^p,1:m-1,'uni',0)]; G = cell2mat(C(1+tril(toeplitz(1:m))...

2 years ago | 0

Answered
Combine multiple varying length double arrays into one timetable
"I assume there has to be a better way of doing this than iteratively calling each variable..." Note that synchronize accepts 1...

2 years ago | 1

Answered
I want to divide an array into x number of smaller arrays of size [m x n] (where x is = m *n) and then using a for loop fill those smaller arrays with the same value
Changing your perspective on this problem would make it easier. A much simpler approach would be to use REPELEM: U = [3,9,6;2,...

2 years ago | 1

Answered
TIPS ON ENTERING FUNCTION INPUT
https://www.mathworks.com/help/matlab/matlab_prog/customize-code-suggestions-and-completions.html

2 years ago | 0

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Answered
Why does my function that should modify cells from an input return exactly the input every time?
This line: for j=size(p_cell,1) % y coord should be for j=1:size(p_cell,1) % y coord % ^^ After that you will need to f...

2 years ago | 0

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Answered
EXCEL TABLE - INDEXING MULTIPLE TABLES AT ONCE
Here is one approach using READCELL. It assumes that all data blocks are aligned, and then within each block: the 3rd cell of ...

2 years ago | 0

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Answered
How to group number sequences in a vector
V1 = [1,1,1,2,2,3,3,3,1,1,3,3,3,2,2,2,1,1,1]; R1 = sprintf('\3+\2+\1+'); [Xs,Xe] = regexp(char(V1),R1) Some values would requ...

2 years ago | 1

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Answered
Not enough input arguments
Your function parameterisation is incorrect. This anonymous function: @(t,y,MAP,Nstep,xNOL)ActualmodelwithPinfinity(t,y,MAP(:,k...

2 years ago | 0

Answered
how to convert a matlab variable name to a char for use in a title, legend, etc
https://www.mathworks.com/help/matlab/ref/inputname.html function(input_matrix) in_name = inputname(1); ... title(in_name) ...

2 years ago | 0

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Answered
for loop for non integer values
It is usually much easier and clearer to loop over indices, rather than over data values: V = 1:0.5:10; E = nan(..); % preallo...

2 years ago | 1

Answered
"Not enough input arguments" error when using fullfile
"I dont see how I dont have enough input arguments? " Very easily, when S1 is empty: S1 = dir('thisNameDoesNot*Exist') F1 = f...

2 years ago | 0

Answered
Is griddedinterpolant omits NaN?
None of the pure interpolation routines will "omit" NaN values. NaN values will propagate from input to output, just as they sh...

2 years ago | 0