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Class property automatically propagated to old class instances
See Comparison of Handle and Value Classes Your exampleClass is a value class. However, the behavior you describe is more like ...

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Index in position 1 exceeds array bounds. Index must not exceed 1.
What is your intention with this assignment? %% Initial condition T(:,:) = 293; % initial temperature (K) Matlab mak...

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Run a large number of iterations without the use of a for loop
Preallocating the variable t will improve speed a lot. Something like t = nan( 1536256, 1 ); t(1) = rf-r0; ... t(i) = rf-...

plus de 2 ans il y a | 1

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How to vectorize the function?
Read Array vs. Matrix Operations. With scalars the two produce the same result, but not with vectors and arrays. The second se...

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How am I suppose to fix this error. I am trying to run the code in order to get a stress vs strain plot and find the value described in the script.
This script runs without throwing errors; the syntax is correct. I assigned values to some undefined variables, lo, m, x, y. C...

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Extracting the numeric part from a cell
Try >> extractBetween( "injection-0:94582)", ":", ")" ) ans = "94582"

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'line' returns number instead of handle inside a loop of a class method
I have reproduced your findings on R2018b. The numerical "handles" are the old type, pre R2014b. I failed to find an explanati...

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Error using for loop to delete empty cell array elements
Replace for i=1:numel(temp_routes_log) by for i = numel(temp_routes_log) : -1 : 1 % loop from last to first element OR if r...

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how to find the immediate date before in one column based on another column using find function?
Assumptions: the two column vectors are sorted a specific date in the first vector may exist in the second vector more than o...

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Whitespace Delimited Textfile, NaN results?
The problem is caused by 'Delimiter',' ' in datacell = textscan(fid,'%f%f%f%f', 'Delimiter',' ', 'CollectOutput', 1); in co...

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empty array size is stuck on 1x3
Try replace fscanf(fileID,'\n\n\n\n\n\n\n\n\n\n\n\n\n\n'); by for jj = 1 : 14 fgetl( fileID ); end fscanf(fileID,'\n\n...

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Please help me to look at the code. Thx
This returns a numerical result, but it's not an integer. fun = @(x) exp(-x.^2./2); int = gausslegendre( 0, 2, fun, 1 ) func...

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I have an invalid use of operator error
I have modified your function to avoid the recursive call of the function. atmos function [T,p,rho] = atmos() h = 0:0.2:20...

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Trouble using the system command with special characters
You try to call system() with a sequence of several input arguments and assumes that system() shall join these arguments to the ...

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Cell Mode and how to use it in Debugging.
There is a bit of confusing nomenclature regarding this feature. Futhermore the feature has evolved over the years. I found this...

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Question


How to find package functions that are shadowed?
I'm missing something. It is possible to have several package functions with identical fully qualified names, e.g. p1.test, on ...

plus de 2 ans il y a | 1 réponse | 2

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Create matrix using the array as index
Try this M = zeros(5,5); a = [2,2,1,0,3]; for jj = 1:5 M(a(jj)+1,jj)=1; end disp(M)

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Import large csv as datastore with formatting errors
Comment out the offending rows open files while not( feof(fid) ) chr = fgetl(fid); is_ok = analyse_row( chr ); ...

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I am getting "Undefined function or variable" for an existing variable.
Run this modified script from the command window whos par* run QuickSIN_parameters.m % load experiment parameters whos par* ...

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Question


R2021b: The Run Section tool in the Editor has been removed
I use the Run Section tool all the time and was surprised to read in the R2021b release notes that it's been removed. Is it repl...

plus de 2 ans il y a | 3 réponses | 0

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how to delete repeated rows in a table?
Test this %% M = [518460 3.322; 518460 -12.984; 518520 3.798; 518520 -10.28; 518580 7.763; 518580 16.851; 518640 5.959; 522225...

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how to find a float number
find( abs( y7 -(-0.3340) ) < tol ) You choose tol. See eps - Floating-point relative accuracy

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Tiny discussion on good practices in object oriented programming (OOP) through a simple example
"[...]titles of decent books for non-programmers" AFAIK: There is no book on object oriented design and programming with Matlab...

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Question


Is the Abstract keyword needed to make a method abstract?
Is this correct Matlab syntax classdef MyClass methods outarg = my_method( this, inarg ); end end R2018b a...

plus de 2 ans il y a | 1 réponse | 0

1

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How to speed up the while loop?
You didn't test the code before uploading! I modified the input lines z = 1; % input('Enter zeta, z = '); w = 1; % input('Ent...

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Matrix dimensions must agree.
Because (jy12) is 400x400 and omega is 200x200

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I got stuck with a loop after the value gets to NaN
The values of xr and yr do not converge to a solution that you expect. xr goes to zero and yr goes to "infinity". >> Newton_Ra...

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Why the ouput of disp input function become looping?
The expected output is repeated a zillion times, because yfit is a vector with a zillion elements >> whos yfit Name Si...

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Split every matrix in cell and make it into different cell
One way %% M = ones(32,32,2,3); % Sample data (20000 replaced by 3) C = mat2cell( M, 32, 32, 2, ones(1,3) ); %% C = sque...

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How to convert 32x32x2x20000 into 20000x1 cell array?
A mat2cell example %% M = ones(32,32,2,6); % Sample data (20000 replaced by 6) C = mat2cell( M, 32, 32, 2, ones(1,6) ); %...

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