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How do I find the overall model p-value of a multinomial regression model (mnrfit)?
According to the documentation, mnrfit is no longer recommended (as of R2023a), and recommends fitmnr instead. It appears to p...

16 dagar ago | 1

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Checking whether excel file is opened?
The fopen function can return information about MATLAB instances of the open files, however I am not certain that it can go beyo...

16 dagar ago | 0

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how can i resample signals using signal analyzer app
The example in Resample and Filter a Nonuniformly Sampled Signal could be helpful.

16 dagar ago | 1

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trying to find which row this specific date time is at in an excel sheet
The ismember function is an option — ValueAtNumRow = datetime('11-Sep-2023 22:25:26', 'InputFormat','dd-MMM-yyyy HH:mm:ss') d...

16 dagar ago | 1

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Scatterplot arrays with different number of elements and tracing the trendline
One option is to reshape the (3x36) arrays into (i08x1) (column) vectors and duplicate ‘M_IRI’ to match by just triplicating it ...

16 dagar ago | 0

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Difference between bandpass function and butterwoth bandpass function
I always use the 'ImpulseResponse','iir' name-value pair when using bandpass or its friends. That forces it to design a vewry e...

17 dagar ago | 1

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Answered
Finding the 'peaks' of a stairway graph
It would really help to have your data (or at least a representative sample of it that demonstrates the problem you want to sol...

17 dagar ago | 0

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Reformat and Merge Date and Time columns
For what it’s worth — LD = load('RVdata.mat'); data = LD.data data.Date = data.Date + timeofday(data.TimeHHmmss); data = re...

18 dagar ago | 2

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Extract interpolated data from contourf?
The contour functions return (x,y) matrices for each contour, and in all likelihood, the ‘x’ values are not the same for both co...

18 dagar ago | 0

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Average C/No value for each second
It would help to have the data. The best approach will likely be to create a timetable from it and then use the retime funct...

18 dagar ago | 0

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Answered
Use the correct filter on a signal
Frequency-selective filters do not work that way. (Intrigued by this, I attenpted to design one by taking the -transform of the...

18 dagar ago | 0

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read file txt with strings and numbers
Use readtable or readcell, depending on what you want. There are other options (textscan), however those two are easiest to use...

19 dagar ago | 0

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Answered
Equation with constants and two variables that are ranges of values
Try this — Beta=(0.0:0.10:1.0); T=(473.15:100:1473.15); BigDeltaPlgH2O = (2.91-0.76*Beta) .* (10^6./T.^2) - 3.41 - 0.41*Beta...

19 dagar ago | 0

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how do you offset curves?
Was my answer to your previous post How to invert axes? helpful? In: subplot(2,2,2, 'align'); if you want the time vector ...

20 dagar ago | 1

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How to invert axes?
I believe what you want is Reverse — x = linspace(0, 1); y = exp(-(x-0.5).^2*50); figure plot(x, y) grid figure plo...

21 dagar ago | 0

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Answered
How to remove incorrect tags from questions?
In the right margin of this page (and the page you want to change), there is a section called (appropriately) Tags. Just to the...

21 dagar ago | 0

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How to code NESTED CYCLES
I would set the empty array to 1 (so that it iterates one time only) and be done with it — a = @(x,y) [x y]; f = [3 6 3 9];...

21 dagar ago | 0

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Determining Signal to Noise Ratio
Calculating SNR can be difficult if the underlying signal is unknown. An extended discussion is in the Analyzing Harmonic Disto...

21 dagar ago | 0

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How can I solve for specific complex solutions?
I am not certain what you want. The first step in solving this is to plot the functions. They may either guide you to a solu...

21 dagar ago | 0

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Dealing with transfer function in symbolic math toolbox.
Yes. Once you have the symbolic polynomials in , use the sym2poly function to extract the coefficiinets. (It may be necesary...

22 dagar ago | 0

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What stat test to use for improved task?
Theis seems to me to ba a paired test, so the Wilcoxon signed rank test (the signrank function) would likely be appropriate. ...

22 dagar ago | 0

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Fitting PDE to estimate parameters
I see one problem: residual = Ccalc - Cexp; that is easily fixed by using the norm function (here calculating the square root...

22 dagar ago | 0

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Answered
Averaging a curve with itself
Try this — % type('membrane_intensity.m') LD = load('test.mat'); x = LD.cx; y = LD.c(:,1,1); [xs,x1] = min(x); [xe,x2...

23 dagar ago | 0

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Answered
how write legend plot right side)
Try this — x = linspace(0, 10); y = randn(size(x,2), 5); figure plot(x, y) legend(compose('Vector %2d',1:5), 'Location',...

23 dagar ago | 1

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Replacing elements in arrays
I am not exactly certain what you want to do, what the nubmers are, or if you only want to replace one or all that meet the crit...

23 dagar ago | 0

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Detrending still leaves a slope
This is the best I can do with your data. A reasonably robust approach is — % imshow(imread('lineprofile.jpg')) % imshow(i...

23 dagar ago | 0

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Answered
Fourier analysis of an spwm signal
Try this — LD = load('spwm_one_cycle.mat') ts1 = LD.ts1 Time = ts1.Time; Data = ts1.Data; figure plot(Time, Data) xl...

23 dagar ago | 0

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Answered
How to change x-axis without changing datapoints?
Here are two ways of changing the plot — x = linspace(536000, 543000, 500).'; yax = linspace(532900, 533400, 500).'; B =...

23 dagar ago | 0

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Answered
An EEG dataset .txt , I want to transpose the rows and columns for all files.
I would still keep them as they are in the files, and transpose them after you read the files. EEG = readmatrix('S9 HC.txt') ...

23 dagar ago | 1

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How to import range of text files into different matrices?
I do not know anything about the file contents, so the easiest way would be to save them to cell array elements. D = cell(50,...

24 dagar ago | 0