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How to create plot from the data in .txt file ?
This should get you started. Note that the warnings are expected and can be ignored. T = readtable('Spatial Density.txt', 'Emp...

1 year 前 | 4

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How do you cluster lines in 3D space?
I would suggest something like this since the main difference in your "groups" seems to be the approximate slopes of the three g...

1 year 前 | 0

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Converting the outpur of a fit (e.g. sfit) into a string format, then pasting the text to a Text Area in app desginer
Another option (which does essentially the same thing) is this: load census; f = fit(cdate,pop,'poly2'); s = formattedDispl...

1 year 前 | 1

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Why is NaN inserted in wrong position?
b = [1 3 0;-2 -1 5]; b(b(:,3)==5,3) = NaN % add ,3 to select only the third column for assignment

1 year 前 | 1

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How I get the frequencies in Hz of a specific signal?
I think this is close to what you are looking for. % % This code will generate a saltatory stimulus of 10 Hz up to 800 Hrz (the...

1 year 前 | 1

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How to specify relative code paths in S-function builder
Have you tried the suggestion in this answer? https://www.mathworks.com/matlabcentral/answers/1568023-how-to-specify-relative-...

1 year 前 | 0

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How to calculate the average of a cell array?
T = {[10, 1, 30], [15, 2, 10], [20, 3, 20]} A = vertcat(T{:}) % make an array from the elements of the cell array by stacking t...

1 year 前 | 1

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errore too many output
You are trying to do this [norm_sp,f_vector]=fft(acc_z,fs(n)); If you look at the documentation for fft you will see that ther...

1 year 前 | 0

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Read in a general binary file (for example, but not exclusively a jpeg file), make a modification and write a new file out verbatim--no altered bytes.
fileread reads the file as text. You need to open the file and read it as binary bytes (uint8) and then process it that way. R...

1 year 前 | 0

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Having issues with plotting a single level contour line on a matrix that has edges
From your simple example, it can be seen that there actually are two places where the interpolated surface passes through the le...

1 year 前 | 1

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How to add rows containing zeros to a matrix
Here is another way. A = rand(2,6) A(4,6) = 0

1 year 前 | 0

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Plotcube function not working
There is a plotcube function on the file exchange: https://www.mathworks.com/matlabcentral/fileexchange/15161-plotcube?s_tid=sr...

1 year 前 | 0

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Keep the latest desired value before changing to undesired value
There might be a way to do this using just basic Simulink blocks, but I don't have Simulink right now to test with. So, I'm goi...

1 year 前 | 0

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Iterative Process to find a variable in which two equations are equal and opposite
I would use fminsearch for this. See below. Note that I am using abs(A - B) for the Error term. % minimize error between two ...

1 year 前 | 0

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Show only a part of the yaxis
Here is a kind of messy workaround. Note that this doesn't work if you have the grid on. h = plot(linspace(-2, 2, 1000), atan(...

1 year 前 | 1

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Smooth curve in certain regions to get desired output
Maybe you can adapt this approach to get what you want. This uses two different moving average filters for the start and end of ...

1 year 前 | 1

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How to model secant and cosecant in Simulink
If I remember correctly, there is only one "Trigonometric Function" block in Simulink. Just double click the block and change t...

1 year 前 | 0

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Why is the number of periods of a cosine wave in the plot changing with the number of samples ?
This is called aliasing. I recommend reading the linked Wikipedia article. The sample rate (in this case the number of time sam...

1 year 前 | 3

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Plot with x-axis limits going from [180:360] then [0:180] contiguously
It seems extremely odd that your data would "wrap" at 250 degrees. Nevertheless... elevation = [26:80 0:25]; azimuth = linspa...

1 year 前 | 0

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another crazy plot layout with zoomed portions and arrows
Hopefully you can adapt this approach to your needs. x = linspace(0, 10, 1000); y = exp(-x); plot(x, y) grid on ax = axes('...

1 year 前 | 0

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A little help with translating a piece of Fortran code to Matlab
The easiest way to read a file line by line in Matlab is with the readlines function. Example: str = readlines('test.txt')

1 year 前 | 0

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subplot with 1 large and 2 small figures
Yes it is. Here is an example. See the documentation for tiledlayout. tiledlayout(2, 2) nexttile([1 2]) % first plot spans tw...

1 year 前 | 2

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select, only once, the names present in a struct
S.Number = compose('%04d', 0:16)'; % create test data since you only included a picture of your data desc = {'Scout'; 'Scout'; ...

1 year 前 | 0

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Missing data retrieve from a periodic pattern.
load('TempRecord.mat'); plot(T.Time, T.Temp) grid on There is definitely not enough information here to fill in those large g...

1 year 前 | 0

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How to plot weeknumbers (integers) in a graph without leaving gaps for weeks that do not exist
Maybe you can adapt this approach to your situation. dt = datetime(2023,1,[1 8 15 22 4*22+3*[7 14 21]]) % example datetime valu...

1 year 前 | 0

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3D spherical plot is cut off by the edges of the graphing window
This doesn't work if you want to be able to interactively zoom in on a region, but if you have in mind a specific range of X, Y,...

2 years 前 | 0

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Fill editfield text value with string from a table
For this specific example, readlines might work better than readtable. DataComments = readlines('file7.csv') Then pick which o...

2 years 前 | 0

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Why don't the markers have the correct color in the legend?
The problem is that each of your calls to scatter is creating five separate sets of data for a total of 10 sets. But, you only r...

2 years 前 | 1

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How to add seconds to a HH:mm DateTime array ?
datetime objects always have a seconds field. If you don't set it, it will already be zero by default, so you don't need to "ad...

2 years 前 | 0

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how to use previous value in simulink? [(k-1) value]
It looks like what you need to do is remove the new_filtered_V input from your MATLAB function block and add this line at the to...

2 years 前 | 1

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