Stephen23

Aktiv seit 2014

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Function definitions are not permitted in this context.
"i don't know why my code not work" It is very simple: you have code outside of the function definition. Solution: get rid of ...

etwa 11 Stunden vor | 0

Beantwortet
Error using (function_name). Too many output arguments.
You did not define the function to return any output arguments: function calcolo_cp(T,fluido) If you intended to return e.g. C...

etwa 12 Stunden vor | 2

Beantwortet
Vectorize nested for loops with indices and subscripts
A = [1,2,0,2;2,1,3,0;0,3,1,3;2,0,3,1] matArray = unifrnd(-1,1,[4,4,10]) Method one: [X,Y] = meshgrid(1:size(matArray,3),A(:))...

etwa 15 Stunden vor | 0

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Beantwortet
Can a custom argument validation function alter the field names of its input variable?
The hard part is not validation, but mapping random fieldnames to your desired fieldnames. Notet that argument validation does ...

2 Tage vor | 0

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Beantwortet
How to write all cells of structure in excel sheet ?
Why is a scalar structure nested inside a (pointless) scalar cell array? Why are lots of scalar numerics stored inside a cell a...

2 Tage vor | 2

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Beantwortet
Can the software read more precise numbers (such as decimal points)?
Use https://www.mathworks.com/help/matlab/ref/im2double.html before performing any adjustments on the image.

3 Tage vor | 1

Gesendet

Custom List / Arbitrary Sequence Sort
Sort a text array into the order of custom lists / arbitrary text sequences. Sort words with Latin-, Greek-, and Cyrillic-based ...

3 Tage vor | 3 Downloads |

Beantwortet
How to define variable names for resampling?
You should: replace the ISMEMBER with ENDSWITH get rid of those asterisks For example: endsWith(files(i+j).name, {'_B03_10m....

4 Tage vor | 0

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Beantwortet
How should I fix my regular expression to parse this txt file?
"It seems that my regular expression is way too broad and causing this problem." There are several locations where your regular...

7 Tage vor | 0

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Beantwortet
What is the equivalent datetime() call to the clock() function?
Note that DATETIME is an object with properties, so (depending on your requirements) accessing its properties is a simple option...

9 Tage vor | 0

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Beantwortet
How can I convert matrix to cell?
https://www.mathworks.com/help/matlab/ref/mat2cell.html A = reshape(1:40000,100,400)'; C = mat2cell(A,4*ones(1,100),100)

10 Tage vor | 0

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How to name and save the results using the name of imported file ?
A much better approach is to store the data in e.g. a structure array: P = 'absolute or relative path to where the files are sa...

10 Tage vor | 0

Beantwortet
Question on creating dynamic matrix variables
"Or alternatively, is there a neat way to do so?" Of course there is: indexing. Either into a numeric array or into a container...

12 Tage vor | 0

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Beantwortet
Building an array of strings that might be empty
"What am I missing?" The differences between strings and characters. Do not mix up string arrays with character vectors (which ...

14 Tage vor | 0

Gesendet

Maximally Distinct Color Generator
Generate maximally-distinct colors in an RGB colormap.

14 Tage vor | 40 Downloads |

Beantwortet
Find a value using an index obtained from a different matrix with same dimensions
The efficient MATLAB approach: tmc = readmatrix('Total_matrix_cases.txt'); tmr = readmatrix('Total_matrix_rotation.txt'); [tm...

14 Tage vor | 0

Beantwortet
Using a menu to generate variables for larger code
For the 1st dialog box: V = str2double(answer); maxvel = V(1); dragco = V(2); width = V(3); mass = V(4); accdur = V(5);...

17 Tage vor | 0

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Beantwortet
3D indices for particular values in a 3D array
Use IND2SUB: X = randi(9,4,3,2) [R,C,P] = ind2sub(size(X),find(X==8))

17 Tage vor | 0

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Beantwortet
how assign cellarray to field Struct
"thank..but it's possible to avoid loop?" Of course (depending on the sizes and classes of APP, SIS, etc): app.Sis = struct('b...

17 Tage vor | 0

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Beantwortet
Generate Array of Random Values
D = sort(randi([-9,9],7,2),2) V = rand(7,13); V = V.*diff(D,1,2)+D(:,1)

18 Tage vor | 0

Beantwortet
Hi, I want to speed up my script with double loop.
X = permute(A,[3,2,1]) + permute(B,[2,3,1]) The data arrangement in memory is not optimal for that operation. Use BSXFUN for ve...

20 Tage vor | 1

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Beantwortet
How to replace exact char in a cell array from another reference cell array
This is difficult because 'x1' is also a substring of 'x10'. But making a few assumptions it might be possible: A = {'x1', 'x10...

20 Tage vor | 1

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Beantwortet
Merge two matrices taking non-Null values
A = [8,8,8,8,NaN;32,32,25,31,NaN;56,56,43,53,NaN;81,80,60,76,NaN;105,103,78,99,NaN;129,127,95,122,NaN]; B = [8,NaN,8,8,8;32,NaN...

20 Tage vor | 1

Beantwortet
Dynamically Make a Variable Name
This is MATLAB so the best solution is to use indexing, just as the MATLAB documentation shows: https://www.mathworks.com/help/...

22 Tage vor | 1

Beantwortet
How to call a function name from function names saved in an array?
prev_output = [1,0,0]; fcs = sprintf('func%s',sprintf('%d', prev_output)); Either use FEVAL: output = feval(fcs,inputs); or ...

24 Tage vor | 0

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Beantwortet
How to use Unicode numeric values in regexprep?
inp = 'Häagen-Dasz'; baz = @(v)char(v(1)); % only need the first decomposed character. out = arrayfun(@(c)baz(py.unicodedata.n...

27 Tage vor | 1

Beantwortet
Cutting (dividing) a matrix into a specific number of rows.
A = [11,12,13;21,22,23;31,32,33;41,42,43;51,52,53;61,62,63;71,72,73;81,82,83]; B = reshape(permute(reshape(A,[],2,3),[1,3,2]),[...

28 Tage vor | 2

Beantwortet
Why does MATLAB not finding a element from my matrix?
Testing for exact equivalence of binary floating point numbers should be avoided. Compare the values, are they actually the sam...

29 Tage vor | 1

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Beantwortet
Question: Structure Array Generation and Dimensions Manipulation
Simple solution: new = [newpop(:);pop(:)] However if you want to your code to be more robust, then you need to preallocate NEW...

29 Tage vor | 0

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Beantwortet
Printing all outputs of the function that has been solved via ode45
This questions gets asked regularly on this forum: users often imagine that there must be some easy way to get some values out o...

29 Tage vor | 1

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