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Stephen Cobeldick


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Matrix indexing- How to assign variable c to second row of A
A(2,:) = c As explained here: https://www.mathworks.com/help/matlab/getting-started-with-matlab.html

약 3시간 전 | 0

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how to find index of string using AND operator when adding conditions
>> zz = {'2','B','A';'2','C','A';'2','V','H';'2','B','Y';'3','F','A';'3','G','A';'3','B','A';'2','G','A'} zz = '2' 'B'...

약 4시간 전 | 0

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Why Nested For Loop Is not showing me the index values from 1 to N interval ?
MATLAB does not display infinite lines in the command window scroll buffer. By default it displays the last 5000 lines, as expla...

약 9시간 전 | 0

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How to read .txt file which have complex numbers and how to separate real and imaginary parts of the complex numbers?
1. Remove the space characters embedded in the complex numbers: opt = {'MultipleDelimsAsOne',true,'HeaderLines',1}; str = fil...

약 10시간 전 | 1

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How to print out 2 variables using disp() function
Use concatentation to join the character vectors together into one longer character vector: disp([txt,num2str(area)]) "...the ...

1일 전 | 0

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Compare data sets of different length and make them equal
>> Data_1 = [1, 8 , 10, 11, 24, 30]; >> Data_2 = [2, 4, 5, 21, 9, 7, 1, 3]; >> Data_2(1+numel(Data_1):end) = [] Data_2 = ...

1일 전 | 0

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How to add two 3-D matrices?
out = cat(3,Matrix1,Matrix2) This is called concatenation: https://www.mathworks.com/help/matlab/math/creating-and-concatenati...

1일 전 | 0

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Finding min values of third column for rows with similar values
>> M = [2.0000,0,3.1971;1.0000,0,3.1971;3.0000,0,6.4662;1.0000,0,6.4662;3.0000,0,9.6356;2.0000,0,9.6356;2.0000,1,7;1.0000,1,5;3....

2일 전 | 1

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How to save a .wav file into different path after processed?
https://www.mathworks.com/help/matlab/matlab_env/specify-file-names.html D = 'absolute or relative path to the folder where you...

2일 전 | 0

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How to concatenate cells in mat file under each other?
Your question is unclear: does the mat file contain one cell array of 255 elements, or 255 separate scalar cell arrays? If ther...

3일 전 | 0

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Error Message: Output argument "I" (and maybe others) not assigned during call to "simpsons".
Although you specified one output argument I:, nowhere in the code did you define I: function I = simpsons(f,M,a,b) ... I = ?...

3일 전 | 0

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Comapring Values in one Matrix to another
The simple MATLAB way: >> A = [373,383,393,403,413,420,451,485,499]; >> B = [373,453,457,461,464]; >> C = A(A>min(B)) C = ...

5일 전 | 1

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save in a new file using 'save' command
If your function is called in a loop then follow the examples here: https://www.mathworks.com/help/matlab/import_export/process...

5일 전 | 0

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unique across multiple cells or arrays
>> a = {[1,2,2],[2,3,6,3],[4,3,5,6,7]}; >> [u,x] = unique([a{:}],'first'); % or 'last' to allocate to the last cell where value...

5일 전 | 1

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Command to exit to the base workspace?
error() As Bruno Luong pointed out, this does not work inside try-catch and also prints text to the command window.

6일 전 | 1

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Location of the "end" statement of the main function in a m. file?
"before first local function" any functions defined after the main function are local functions: https://www.mathworks.com/hel...

6일 전 | 1

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How to convert a char into double?
Note that there are not only numbers in that string, it also contains 'S' characters apparently at random, e,g.: >> f(8480:8500...

6일 전 | 1

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Variables under the same name in different .mat files
Rather than loading into separate structures and creating numbered variables (which is a bad way to write code), you should simp...

6일 전 | 0

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Identify first and last indicies of numbers in an array containing NaN's
Your original idea of using diff is exactly the simple and efficient solution that experienced MATLAB users would use: >> M = [...

7일 전 | 0

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How to parse text to numbers?
>> ttxt = {'No info';'1-50.00000';'3-100.000';'2-2.0000';'Free & Unlimited';'1-100.0000;1-0.0000';'1-25.000;1-50.000'} ttxt = ...

8일 전 | 1

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Separate string with tag_string
This should get you started. Adjust as required. str = 'tag_A(this is tag A, it contains tag_B(this is tag_B, it contains tag_C...

8일 전 | 0

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Hi, this function is to return the maximum value of 'n' consecutive elements but error index exceeds the number of array elements appears for a random applied vector
The main bug is that you are iterating over data values and not indices as your code requires. On this line you define the loop ...

9일 전 | 0

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Count number of indexes for each consecutive values in column of array
>> V = [0 0 1 1 1 0 0 0 0 0 1 1 1 1 1 1 1 1 1 0 0 0]; >> D = diff([0;V(:);0]); >> find(D<0)-find(D>0) ans = 3 9

10일 전 | 0

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What should I do to display midnight in datetime?
>> dt = datetime(2019,9,8,0,0,0,'Format','yyyy-MM-dd HH:mm:ss') dt = 2019-09-08 00:00:00

10일 전 | 0

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How can I writetable to cell array
Where C is your cell array: for k = 1:numel(C) F = sprintf('file_%d.CSV',k); writetable(C{k},F) end This just follo...

13일 전 | 0

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Dynamic vectors into cell
It is very easy to get what you want, you just need to avoid concatenating all of the numeric/logical data together, e.g.: >> D...

13일 전 | 0

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Using cellfun and regexp question
The simple and efficient solution is to use the 'once' option: sampleRates = regexp(storedSamplerates,'\d+','match','once'); %...

14일 전 | 1

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How to remove array items that include a certain substring?
>> C = {'a1','a2','b1','b2','c1','c2'}; >> X = strncmpi(C,'c',1); >> D = C(X) D = 'c1' 'c2'

14일 전 | 0

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what is the best possible way to find the missing values using interpolation
>> a60 = [1,5,9,13,17,21]; >> t60 = 60*(0:numel(a60)-1); >> t15 = t60(1):15:t60(end); >> a15 = interp1(t60,a60,t15) a15 = ...

15일 전 | 0

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convert period (.) to colon (:) for reading time
I don't see why you need to convert any characters, MATLAB imports that format without error: >> str = '2020-07-29 14.42.32'; ...

15일 전 | 1

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