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Function with a structural array
Concatenation is done using square brackets |[]|. Curly brackets are for defining cell arrays. Also, while it is a question of p...

8年以上前 | 2

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Subplots within for loops
figure() ; for plotId = 1 : 4 subplot(2, 2, plotId) ; plot(x{plotId}, y{plotId}) ; end figure() ; for plo...

8年以上前 | 7

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overlay plot on imgage
hold on for overlays, for example: imshow( myImage ) ; hold on ; plot( x, y, 'rx' ) ; and you will see the plot...

8年以上前 | 2

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How to find intersection coordinates of node points in truss image?
If you are always dealing with regular trusses, your best option may be to detect vertical and horizontal edges by summation ove...

8年以上前 | 1

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How to match and take the part of the string between two specified characters
Replace the line that extracts the start time with: startTime = strtrim( regexp( content, '(?<=Start Time\s+:\s*).*?(?= - )...

8年以上前 | 2

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How to take only first part of the string
Assuming that all cells content is of class char: B = [A(:,1), cellfun(@(s)regexp(s, '\S+', 'match', 'once'), A(:,2:3), 'Uni...

8年以上前 | 0

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Using fprintf to print in text file
The first argument in the call to FPRINTF should not be the file name but the file handle that you get with FOPEN: kid = fop...

8年以上前 | 0

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Replacing numerics in text using regular expressions.
Here is a small trick assuming that no character in your string interferes with <https://www.mathworks.com/help/matlab/ref/sprin...

8年以上前 | 1

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How to split the name in to two cells
Or regexp-based: if C = {'56', 'mat find false', '89 mm', 'mat 96 kl'} ; then result = regexp(C, '(mat)?\s?(.*)', 't...

8年以上前 | 2

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Sorting excel data (numbers and strings) and outputting sorted data to another excel file.
*EDIT 09/27 @ 22:57 UTC* I updated your file and attached it to my answer (Data_original.xlsx). I picked on number (093321, d...

8年以上前 | 2

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Detect Edge in picture with low contrast
Well, that picked my interest so I just spent a lunch break on it. Running the following using the |process| function attached (...

8年以上前 | 6

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Dividing a cell array into permutations of two column cell
*EDIT 1:* Here it goes: words = {'A', 'B', 'C', 'D'} ; n = length( words ) ; wordIds = arrayfun( @(k) nchoosek( 1:n...

8年以上前 | 1

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How to convert cell array with Nan to a double array with Nan=0?
x = cell2mat(C) ; x(isnan(x)) = 0 ;

8年以上前 | 1

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How to extract a row from a transpose of a matrix
Take the first column of the original matrix.

8年以上前 | 3

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MatLab Logical answer always 1
Yes, all these tests (relational operators) return a logical, which is a value that is true (1) or false (0). But: >> 5 <...

8年以上前 | 3

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Define an input that is ONLY a 3-by-4 matrix
You can use specialized functions described here: <https://www.mathworks.com/help/matlab/input-and-output-arguments.html> ...

8年以上前 | 1

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How is it possible that Matlab still hasn't created a built in function that automatically inserts a title above a group of subplots?
When you start getting picky, you don't use SUBPLOT anymore because it is not that flexible. Instead you create an axes object t...

8年以上前 | 4

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Import an Excel File
I think that I am starting to see what you did, and it is not something that we generally do actually, hence the misunderstandin...

8年以上前 | 1

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How to remove repeating rows without unique function?
Use the |'stable'| option: >> A = randi( 3, 10, 2 ) A = 2 3 1 1 3 1 3 1 3 ...

8年以上前 | 2

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I am trying to solve following error in my code, Error using .* Matrix dimensions must agree.
If you got this code from someone else and it should be working (because it used to work with the exact same parameters), my gue...

8年以上前 | 1

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How do I read a text file with certain format line by line with each line of different length?
There are more orthodox solutions, but I updated a former answer quickly in case you need a short term solution. The only assump...

8年以上前 | 0

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How to remove artifacts from a signal
Why not simply: d = [0; diff( signal )] ; isValid = ~logical( cumsum( -sign( d ) .* (abs( d ) > 10) )) ; then e.g...

8年以上前 | 7

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reshape a matrix from the text
The output of TEXTSCAN is a row cell array with 4 cells and each one of them contains a numeric array (column vector) of 2250 va...

8年以上前 | 0

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how to read grid data from text file ?
The format seems to be GridTOMS as mentioned <https://acd-ext.gsfc.nasa.gov/Data_services/cloud_slice/new_data.html here>. There...

8年以上前 | 1

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How Can I replace specific lines in a text file
Here is an example, but we can be much more specific. % - Read source. content = fileread( 'myData.txt' ) ; % - Update...

8年以上前 | 5

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Comparing Elements of two matrices if loop
Or you can operate in 3D: A = [-10, 2, -8, 4; ... -4, 6, -3, 7; ... 2, 5, 3, 6] ; B = [ 3, 6; ... ...

8年以上前 | 0

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How to check whether a 2d matrix is gradually increasing in values in row direction.
>> flags = [false( 1, size( A, 2 )); diff( A ) < 0] flags = 2×3 logical array 0 0 0 0 0 1 >> A(flags...

8年以上前 | 1

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How to import data from a non-symmetric .txt file.
If you are stuck with usual tools, try this: content = fileread( 'virusDat.txt' ) ; % - Split in rows, remove extra empt...

8年以上前 | 1

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Extracting and Manipulating Data
Looking at your data: data = xlsread( 'data2016.csv' ) ; and displaying a slice: 0.0001 0.0026 0.0021 0.0...

8年以上前 | 0

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Processing timer for Sparse matrix is too long?
You won't be able to do it, vectorizing or not. If random integers are really in |1:7|, the probability, when you pick two el...

8年以上前 | 2

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