# Stephen

Suspensa Vix Via Fit

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Split a cell array of character vectors at multiple-number delimiter

Rather than telling us what you currently get, it is probably more useful if you tell us what you want. I made some guesses abo...

en dag ago | 0

Reading mixed format data containing both text and numbers from a '.txt' file in matlab

fpt = '.'; % absolute or relative path to where the file is saved. fnm = fullfile(fpt,'text.txt'); % Count the header lines: ...

en dag ago | 0

Determining Order of flattening an array using colons

"If we use A(:,:) we expect an array with dimensions (X*Y, Z), with the i,j element pointing at (i mod X, i div Y, j) element o...

2 dagar ago | 1

| accepted

Saving file at different directory

You need to use FULLFILE to include the path in the filename, e.g.: [F,P] = uiputfile('FileNAME.txt'); fnm = fullfile(P,F); % ...

3 dagar ago | 1

| accepted

MATLAB plot is blank?

You are using matrix division where you should be using array division: https://www.mathworks.com/help/matlab/matlab_prog/array...

4 dagar ago | 0

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Get row number with certain data in it

"I tried the "find"-function but it didnt bring me to a useful result." It works for me: % Fake data: M = randi(9,7,2); M(5,...

4 dagar ago | 0

Add '_max' to odd variable names and '_min' to even ones.

T = array2table(rand(5,8),'VariableNames',{'Var1','t','Var3','ang_azi','Var5','vel_azi','Var7','acc_azi'}) T.Properties.Variabl...

4 dagar ago | 0

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How to I add zeroes onto a matrix?

Where V is your vector: V(end+1:52500) = 0

4 dagar ago | 1

I just need to get the numbers from this vector. The result must be a double. I need fast and clean code, as this operation is performed over and over again in my code.

Fastest: C = {'G07','G23','G04','G08','G20','G13','G30'}; V = sscanf(sprintf('%s',C{:}),'G%f')

4 dagar ago | 0

How do you capitalize the first and the third letter of each word in a sentence?

T = 'my pet is hungry'; U = regexprep(T,'(?<=\<(\w{2})?)(\w)','${upper($1)}') Of course because this is clearly homework you w...

4 dagar ago | 0

I need a function to identify if a number is part of a vector or matrix.

Where M is your matrix and N is your scalar number: any(N==M(:))

4 dagar ago | 1

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change the first digits when ends with 5959

Rather than messing around with strings you should probably just work with duration objects or numeric arrays. S = ["000000";"0...

5 dagar ago | 0

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How to merge two tables, keeping independent variable (x) the same but summing the dependent variable (y)

Simpler: T1 = readtable('Confoss_landings.xls', 'VariableNamingRule','preserve') T2 = readtable('Mainefoss_landings.xls', 'Var...

5 dagar ago | 0

Interpolate/Resample to a specific decimal point

Assuming no adjacent duplicate values: S = 1; V = [1,3,4,7,6,3,6]; X = cumsum([1,abs(diff(V))]); Z = interp1(X,V,1:S:X(end))...

5 dagar ago | 0

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How to combine 2 tables with different variables into 1 table?

The actual MATLAB solution just takes one simple line of code: SysTime = [1;2;3;4;5]; EDF = [10;20;30;40;50]; T1 = table(SysT...

5 dagar ago | 2

How to properly format a data table with fprintf?

A = [1,2,3,4,5]; fprintf('Numbers%s\n',sprintf(' %1.2f',A))

5 dagar ago | 0

Why the results of the matrix X' dont show?

Use https://www.mathworks.com/help/matlab/ref/mldivide.html A = [0,2,-1,0;0,0,1,-1;1,-1,0,0;-1,0,0,1]; B = [100;-500;300;100];...

5 dagar ago | 1

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Create Multiple Arrays While Looping Through One Single Array

By far the simplest and most efficient solution is to use one matrix: V = 1:81 M = reshape(V,9,9).' You can trivially access ...

6 dagar ago | 1

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how to add elements to an array in a for loop

The MATLAB approach is to use logical indexing, not a loop: V = [2,4,5,6,3]; N = sum(V(V>=5))

7 dagar ago | 0

I am unable to display my answers on command window

https://www.mathworks.com/help/matlab/ref/display.html a = [3 6 1 9; 6 5 3 7; 7 3 2 6]; display(a)

7 dagar ago | 0

Convert MAT file to v7.3

You can load and save the individual (or any selected) variables using the structure approach too. Lets try it: A = 1:3; B = 4...

8 dagar ago | 0

linspace not working on MATLAB Coder

In MATLAB it is usually better to loop over indices. Perhaps this would work: V = linspace(-r_max*Tc_usbl,r_max*Tc_usbl,decisio...

8 dagar ago | 1

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Normalize unit vector to single didgit integers

fun = @(V) round(V./10.^floor(log10(abs(V)))); fun([0.4,-0.4,0.8]) fun([0.123,0.123,0.5]) Note that this scales each element ...

10 dagar ago | 0

How can I run this script and only create folders with files in it without having an additional file outside the folder?

Get rid of the FOPEN and FCLOSE, they are completely unrelated to WRITEMATRIX: start = tic; % input n and m n = input('\n How...

13 dagar ago | 1

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Why does .m4a audio file (imported via audioread) get stored in workspace with two data series/data columns instead of just one?

Clearly your audio file has two channels. The MATLAB documentation states that the first output is "... returned as an m-by-n ma...

15 dagar ago | 1

random selection from 5 different vectors

C = {[1;2;3;2],[4;5],[7;8;9],[0;1;2],linspace(0,1,101)}; V = {1,1,1,1,2}; F = @(v,n)v(randi(numel(v),1,n)); Z = cell2mat(cell...

15 dagar ago | 0

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Plotting numeric data vs time (from text file)

"I am trying to import some numeric data from a text file and then plot it in MATLAB." T = readmatrix('time.txt'); M = readmat...

15 dagar ago | 1

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Use a structure with fields in a loop - Outputs & indexing ??

Where S is your structure: F = @(a)a.Sig(1); V = arrayfun(F,S)

16 dagar ago | 0

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How to load multiple .mat files containing timetables into the workspace and concatenate them vertically

"Do I have to rename the structs..." No, you do not need to. But in future when designing data you should keep the structure n...

22 dagar ago | 0

Please help i seem to be failing to understand what the following errors mean and how to correct for them.

I suspect that something like this is what you are trying to do (I fixed many small bugs): g = 9.8; %gravit...

23 dagar ago | 0

| accepted