wavelet denoising of signal
Wavelet Signal Denoiser. Alternatively, something like this may be similar to what you had in mind: C = randn(1,100); metho...

7 days ago | 0

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Why do I get wrong multiplication result?
teta and phi are row vectors of the same length, so this expression: exp(1i*k*sin(teta).*(m*dx*cos(phi)+n*dy*sin(phi))); is al...

7 days ago | 1

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help on graph (w/o common matrix plotting built-in functions)
data = randi([0 1],10,30) imshow(1-data)

7 days ago | 0

Multiply two cells of an table.
EM_Volllastkurve = table([0;100;200;300],[550;550;550;550],'VariableNames',{'Drehzahl' 'Drehmoment'}) To multiply (row 1, colum...

7 days ago | 1

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Inaccurate results when writing xls through writetable
From the documentation for writetable: If filename is the name of an existing spreadsheet file, then the writing function write...

7 days ago | 0

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I want to compare every matrix element to a constant then calculate a new matrix based on every case
Use logical indexing: A = [ 1 2 3 4 5 ]; b = 3; C = zeros(size(A)); C(A < b) = A(A < b)*b; C(A >= b) = A(A >= b)+b; di...

7 days ago | 0

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How can I export a string to a .txt file?
From the documentation for save: "Use one of the text formats to save MATLAB numeric values to text files. In this case: Each ...

7 days ago | 0

Batch processing using for loop
load with no output loads the contents of the mat file into the workspace, overwriting any variables of the same name that were ...

7 days ago | 0

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how to conver to 3d plot to 2d plot well?
You could make a 2d plot of some kind whose color comes from the data in the 3rd dimension, e.g., a surface or a contour: lat =...

7 days ago | 0

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How to plot a line with specific line slope ?
You have to decide where the plotted line segment should start and end. Here's one way you might do that, which is to plot the ...

7 days ago | 0

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Extract sub array from d-dimensional array given indices for each dimension
% random 4-D (4x8x5x10) array A: d_siz = [4 8 5 10]; A = randn(d_siz); size(A) % make the index vectors for each dimension ...

8 days ago | 1

how to sum elements
GA_sum = sum(GA); GH_sum = sum(GH); % etc.

8 days ago | 1

How can one display multiple Heatmaps in one figure on the same scale?
You can specify the ColorLimits of all three heatmaps after they are created. Here's a demonstration with some random data: fo...

8 days ago | 0

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converting MJD in UT1 to calender date
Convert 2017 January 00:00:00.5912977 to year,month,day,hour,,,,,,seconds, as requested: dt = datetime('2017 January 00:00:00.5...

8 days ago | 0

How I convert matrix 8760x1 to 365x24
M = 1:8760; % some 8760x1 matrix M_new = reshape(M,365,[]) % reshape to 365x24

8 days ago | 0

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How to make a colour gradient with 60 lines on a graph
You can set the ColorOrder property of the axes to control the colors of the plotted lines, without having to specify each line'...

8 days ago | 1

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Incorrect dimensions for raising a matrix to a power
Check that your inputs to gaussh are all scalars, because it looks like all three input arguments to the function gaussh are exp...

8 days ago | 0

How to find repeated values after decimal in array?
data = [ ... 868.1 567.1 413.1 1159.7 52.1 99.7 126.7 111.1 167.2 1322.2 ...

8 days ago | 0

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Writting multiple files with fopen 'w'
Here's a function (get_unused_file_name) you can use for this purpose. It takes a file name and check if that file already exist...

8 days ago | 0

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I don't understand the condition from FOR row 16 to row 26. Can explain each row form if row to the end please.
Lines 16 through 26: for i=1:rows fprintf('('); for j=1:columns if j < columns fprintf("%.4f , ...

9 days ago | 1

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round to 2 decimal places but still have more than 2 decimal places when storing
"the stored value not storing 2 decimal places." If you mean the value written to file has more than 2 decimal places, that's b...

9 days ago | 1

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Find min and max datetime in table
T = table( ... [2;2;3;3], ... datetime({'05/20/22';'05/20/23';'04/12/99';'06/12/02'},'InputFormat','MM/dd/yy'), ... ...

9 days ago | 0

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sort the matrix by the order of the first row
A = [ ... 3 5 4 1 2 0.2 0.5 0.7 0.1 0.9 0.7 0.9 0.4 0.3 ...

9 days ago | 0

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ismember to filtered table
That's doing ismember with the names of the files. [a,b]=ismember('meta_data_mri.MRID','MRIdata.subjects') [a,b]=ismember('abb...

9 days ago | 0

Can someone run this function and give the results as I have 2017 version and I believe there are some functions that work in latest versions
It appears to run ok in R2017b. I guess that means you have R2017a. Here's the result: openfig('untitled.fig'); If I had to g...

9 days ago | 0

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Deleting rows with an if Statement
Here's a way to delete rows of a matrix if two conditions are both met: x = magic(7) % delete rows of x where the value in col...

9 days ago | 0

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How do I use readtable to read in an Excel file whose first column has indenting that I want to preserve?
opts = detectImportOptions('test.xlsx'); opts.VariableOptions(1).WhitespaceRule = 'preserve'; Ex_MassProps = readtable('test...

9 days ago | 1

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function with text string input and excel file
warning off all get_car_info('Cars.xlsx','x') get_car_info('Cars.xlsx','y') get_car_info('Cars.xlsx','z') function out = g...

9 days ago | 0

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