Stephen23

Aktiv seit 2014

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Error using vertcat and how to solve it?
f = @(t,x) [-x(4)-(0.424)+(1.6977)*exp(-1.35*10^20*(x(1)^2)); x(4)-(0.663)+(2.6540)*exp(-1.35*10^20*(x(2)^2)); -(2.994...

etwa 17 Stunden vor | 0

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How to load multiple .mat files which are having subfile in .mat format using the loop?
Unfortunately the data in those MAT files is very badly designed, because each MAT file uses a changing prefix on the variable n...

ein Tag vor | 0

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Accessing and synchronizing timetables in cell array?
Do not use a loop for this! The simple MATLAB approach is to use a comma-separated list: https://www.mathworks.com/help/matlab/...

ein Tag vor | 1

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How to create separate matrix in workspace for each iteration
"I want to save loop data after each itteration in new workspace with new variable name.Like in first loop i want to save data i...

2 Tage vor | 1

Beantwortet
Select sequence of numbers from Array
V = [1 1 1 2 2 2 3 3 3 4 4 4 1 1 1 2 2 2 3 3 3 4 4 4 1 1 1 2 2 2 3 3 3 4 4 4 1 1 1 2 2 2 3 3 3 4 4 4]; X = V(:)==1; Y = cumsum...

6 Tage vor | 0

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Save table with cell arrays in csv
T = load('table.mat').table % !!! do NOT use "table" as a variable name !!! F = @(v)strjoin(string(v),','); T = convertvars(T,...

6 Tage vor | 0

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Save each iteration of a for loop to table
With MATLAB it is invariably easier to loop over indices, rather than looping over data values directly. V = [-1,-0.5,-0.1,0,0...

6 Tage vor | 0

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How I can return output from function 'A' for using them as input for another function 'B'?
How to call function with output arguments is explained in the introductory tutorials: https://www.mathworks.com/help/matlab/ge...

6 Tage vor | 0

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I want to export data to txt file in Loop
P = 'absolute or relative path to where the files are saved'; S = dir(fullfile(P,'*.txt')); for k = 1:numel(S) F = fullfi...

7 Tage vor | 0

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i am tring to input different z values to get different B using matrix manipulation. just having trouble using for loop
Note that I replaced the INV()* with the recommended MLDIVIDE: https://www.mathworks.com/help/matlab/ref/inv.html#bu8tv8c-6 An...

7 Tage vor | 0

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How can i calculate the length of curve?
A very simple approach is to download John D'Errico's excellent ARCLENGTH function: https://www.mathworks.com/matlabcentral/fil...

9 Tage vor | 0

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How to measure elapsed time in hh:mm:ss?
You can do this with SECONDS(), but then it requires two lines. Here is a simple solution on one line: tic .. dur = duration(...

9 Tage vor | 0

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Str2double gives NaN
https://www.mathworks.com/matlabcentral/answers/437449-matlab-coder-giving-issue-with-textscan#answer_354189 X = "3.716,3.711,3...

9 Tage vor | 1

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Why do I receive the error "Undefined function 'times' for input arguments of type 'matlab.graphics.chart.primitive.Line'"?
The basic problem is that you have re-used the variable name p. You think that p is some value from the start of your code, but ...

9 Tage vor | 0

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How to find number of bit change between binary numbers?
A = ['110'; '101'; '011'; '111'; '100'; '001'; '010'] B = sum(diff(A,1,1)~=0,2)

10 Tage vor | 1

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How to loop function for all timesteps in one text file
T = fileread('atomlocation.txt'); C = regexp(T,'(^\S+\s+\S+\s+\S+\s*\n)+','lineanchors','match') N = numel(C); fprintf('%d bl...

11 Tage vor | 0

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How to create a 3D Matrix?
"While in python this matrix is of 3*2*5," Not really, it is actually just a whole lot of nested 1D lists. In some languages th...

12 Tage vor | 0

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This statement is not inside any function. (It follows the END that terminates the definition of the function "mixing_tank".)
The function definition needs to come after all of the other code. See: https://www.mathworks.com/help/matlab/matlab_prog/local...

13 Tage vor | 0

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Get special variable out of every struct in workspace
"Is there any way to extract the "values" out of these 2 structs for each variable which is loaded into the workspace?" Yes, bu...

13 Tage vor | 1

Beantwortet
How to load all .mat file in the current directory and save them as .wav file?
P = 'C:\Users\Desktop\BE'; S = dir(fullfile(P,'*.mat')); for k = 1:numel(S) F = fullfile(S(k).folder,S(k).name); D =...

13 Tage vor | 1

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How do I add rows to a table in a for loop?
"... it keeps producing the tables I want, but not in the order I want, and I don't know how to fix this." My guess (in lieu of...

14 Tage vor | 0

Beantwortet
identifying entry elements in rows of logical matrix
A = [1,1,1;0,1,1;0,0,0;0,1,0] B = A .* (cumsum(A,2)==1) % replace .* with & to get a logical output

14 Tage vor | 3

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Beantwortet
How to perform function whos output is a struct in a loop?
Assuming identical fieldnames, the simplest and most robust solution is to concatenate the structure after the loop: N = numel(...

14 Tage vor | 0

Beantwortet
Deleting fields of a particular dimension in a structure
As I wrote in several of your earlier questions, this task would be much easier if your data were better designed: https://www....

14 Tage vor | 0

Beantwortet
How can I change timestamp format?
The best solution is to fix the source. Otherwise: C = {'09.02.2022 14:41:56:999';'09.02.2022 14:41:57:1'} D = regexprep(C,{':...

14 Tage vor | 0

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Creating a row vector of combinations?
One simple aprpoach is to download this FEX submission: https://www.mathworks.com/matlabcentral/fileexchange/24325-combinator-c...

14 Tage vor | 3

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Extracting names from first row of index and seeing if they are equal to indexed variable?
You can simplify this by using one loop. Lets first create some fake data: mkdir ./scan1 mkdir ./scan2 mkdir ./scan3 writema...

15 Tage vor | 0

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How to eliminate values after comma, in double value?
A wild guess: V = [0.2,0.2862] W = fix(V*10)/10

15 Tage vor | 1

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How i creat Costomer fscanf?
format long M = readmatrix('sol2.txt', 'Delimiter',{' ','∠'}, 'MultipleDelimsAsOne',true, 'TrimNonNumeric',true)

15 Tage vor | 1

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How to save the Data in different array using Value in 2nd column
Clearly creating lots of separate variables in the workspace would be a very bad approach: https://www.mathworks.com/matlabcent...

15 Tage vor | 0

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