Respondida
How to remove harmonics and noises from a signal and reconstruct it?
@ANANTA BIJOY BHADRA [edit: correct spelling errors] Make a signal with 32 samples per cycle, and smaller sinusoids at the 2nd...

más de 2 años hace | 0

Respondida
How to save a figure/plot after annotating?
@arjun luther, plot(0:10,0:10,'-rx') ax=gca; exportgraphics(ax,'MyFig300.eps','Resolution',300); After issuing the plot comm...

más de 2 años hace | 1

Respondida
Need explanation of the power spectrum after plotting the graph
@Muhammad Faiz, You asked what the power spectrum plot means. Your plot shows multple traces for each of the three conditions: ...

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Respondida
Solving a 2D Wave equation in time with initial conditions and boundary conditions
@Jelle Doorn, You must use a smaller dt when dx gets smaller, to maintain stability in the numerical solution. I know that you...

más de 2 años hace | 0

Respondida
Please help with correcting baseline of fall detection
@Marko Ivanusic, This is a good project! The data in the file you supplied does not match either series in the plot. You dre...

más de 2 años hace | 0

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Respondida
Differential beamforming - audio data processing
@Marko Jankovic, When you say you have tried to do differential beamforming without success, what exactly did you do? How do yo...

más de 2 años hace | 0

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Respondida
Unable to get how to solve for mutltivariable function while calculating DTFT
@Rohit Kumar, [Are you sure that is exactly how the frequency repsonse and the input funtion are defined?] The frequency res...

más de 2 años hace | 0

Pregunta

confidence intervals returned by predict()
The predict() function returns confidence intervals (CIs) for values predicted from a model. There are four options available f...

más de 2 años hace | 1 respuesta | 1

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respuesta

Respondida
How to output simple linear regression confidence limits for new values of independent variable.
@Gary Diamond [edit: corrected typo] [second edit: corrected an error in the plotting of CIs] I wonder if you used a column o...

más de 2 años hace | 0

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Respondida
HOW TO FFT A NOISY EARTHQUAKE DATA
@Mary Claire, [edit: add detrend command example; fix typos] You are right that removing the mean value first is good. x=x-m...

más de 2 años hace | 0

Respondida
i want to plot the vertical velocity graph in multiple location in cross section plan into the graph like the post image.
@ANIRBAN, It would be helpful if you would provide some actual data and an explanation in words of what you want to plot. It a...

más de 2 años hace | 0

Respondida
Sampling Time and oscillator
@Ismael Ochoa, "What Can I do in this case?" You can ignore the small variation in the peak heights. Does it matter? You ca...

más de 2 años hace | 0

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Respondida
Time series from Power Spectral Density (PSD)
@Albert Zurita, you wrote: I would like to compute different time series (time realizations) of a given PSD. I've read there ar...

más de 2 años hace | 1

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Respondida
How do i find the snr of a signal, before filtering and after filtering?
@Rafia Noshin, [edit: change SNR calculations from ratio of amplitudes to ratio of powers] It depends. First of all, SNR is ...

más de 2 años hace | 0

Respondida
Fast time integration troubles
@Federico, The code you use to convert data to data_volts looks reasonable. Your code assumes that the ADC produces an output o...

más de 2 años hace | 1

Respondida
Use imufilter to calculate rotation matrix to earth frame
@Yunda Liu, [Edit: correct the sign in one element of one of the rotInit matrices, below.] You have (linear) acceleration (in ...

casi 3 años hace | 0

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Respondida
How to calculate the BER for NLOS channel?
@Parul, the calculaiton of bit error rate depends strongly on how you model the encoding and decoding of bits, as well as how yo...

casi 3 años hace | 0

Respondida
How to calculate the BER for NLOS channel?
@Parul, The bit error rate for near-line-of-sight digital communication depends on many factors, including the carrier-to-noise...

casi 3 años hace | 0

Respondida
Optimize function while meeting a condition
@Jon Bilbao, the link to the Wikipedia article is helpful. Now I understand that cant has units of length, not angle. I cann...

casi 3 años hace | 0

Respondida
what is wrong with ifft process on this image?
@2NOR_Kh, img = imread("cameraman.tif"); figure, subplot(121); imshow(img); title('Original'); [m, n]=size(img); %img_fft = ...

casi 3 años hace | 0

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Respondida
How to add a subscript to a plot of ordered pairs in the order in which they are plotted.
@Tatum, A=[1,1; 0,1; 0,0; .5,.5; .5,1.5]; labels=string(1:length(A)); plot(A(:,1),A(:,2),'bo') xlabel('u'); ylabel('v') tex...

casi 3 años hace | 1

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Respondida
Optimize function while meeting a condition
@Jon Bilbao, Please explain your function in more detail. It is good practice to include comments in a function eplaining the ...

casi 3 años hace | 0

Respondida
How I can define/ calculate reflection of the ray correctly? As my reflection makes mistake in direction
I meant the comment above to be an answer; please consider it to be one. t is a scalar, t>=0 so that the reflected ray is only ...

casi 3 años hace | 0

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Respondida
Generate trapezoidal waveform from a square waveform using convolution
@Victor Dos Santos, [edit correct capitalization errors] Your convolution worked and it did produce a trapezoidal signal. You...

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Respondida
Plotting Several Data Sets in a For Loop
@George, You write: x_new=x_prev+u0x*i+0.5*ax*(i^2); which is not correct, given how you define variables. You define i as cu...

casi 3 años hace | 0

Respondida
how to smooth the data of array to get a smooth surface?
@Abdullah, an example of a median filter for a surface: First, make a surface with some "noise": A=repmat(-(-20:20).^2/400,31,...

casi 3 años hace | 0

Respondida
how to smooth the data of array to get a smooth surface?
@Abdullah, Check this out: https://www.mathworks.com/help/matlab/data_analysis/convolution-filter-to-smooth-data.html Or do a...

casi 3 años hace | 0

Respondida
How do I get directionality from the departure() function
@Steve K, Multiply the values from departure by sign(lon1-lon2). Define points: lat1=[45.73366;42.30074;42.11033;37.69088]; ...

casi 3 años hace | 0

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Respondida
solving 4 equations with 4 unknowns
@Hamza Harbi, because the equation has two solutions. The first values of a,b,d,e are one solution; the second values of a,b,d,...

casi 3 años hace | 0

Respondida
Sinusoidal curve from discrete dataset
@Ashfaq Ahmed, [edit: I changed the comments in the code for t1 and t. I added a line to display the fitted values.] load('si...

casi 3 años hace | 1

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