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# Kalasagarreddi Kottakota

Last seen: Today Aktiv seit 2021

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Frage

Why low pass filtering requires long duration time signals?
Hi, I am working with lowpass filtering using filtfilt in matlab. I have observed filtering process is increasing its efficienc...

etwa ein Monat vor | 2 Antworten | 0

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How to check the freqeuncy response of a boxcar filter?
Hi, I am performing a lowpass filtering with two different filters. a) window i.e. box car b) butter filter. For butter, I know ...

etwa 2 Monate vor | 1 Antwort | 0

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How to represent bar plots efficiently?
I have a set of data, where the 2nd value is very very small compared to the first. Thus, it is very difficult to visually see. ...

etwa 2 Monate vor | 1 Antwort | 0

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What is the best metric to compute the error for complex time series data?
I have a complex number time series of data for ground truth and estimated values. I am currently using Mean square error metri...

etwa 2 Monate vor | 1 Antwort | 0

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How to plot a 3d surf plot?
I am executing the following code to plot a 3d surface. I get an error. Can I get some help to correct it. Or if there any altte...

etwa 2 Monate vor | 1 Antwort | 0

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How to shape the subplot to square and change colorbar label to top of the bar?
I need a square subplots and the colorbar label needs to move to top of the bar. Could some one help me? set(0,'DefaultAxes...

etwa 2 Monate vor | 1 Antwort | 0

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How to set properly single colorbar for subplots?
Hi, As you see here, I need only one globar color bar for all the subplots. But when I try using this, the first two subplots ar...

etwa 2 Monate vor | 1 Antwort | 0

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How to move the colorbar label to top position of the bar?
I need to change the colorbar label to the position showed in the attached image. C = [0 2 4 6; 8 10 12 14; 16 18 20 22]; clim...

etwa 2 Monate vor | 1 Antwort | 0

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What is the best error metric for complex numbers in matlab?
I need to calculate the error percentage for complex numbers and I generally use: All measured and actual are complex number...

3 Monate vor | 2 Antworten | 0

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How to define cutoff freqeuncy when using rectwin for lowpass filtering?
Hi, when perfoming lowpass filtering, how to choose the cut-off freqeuncy argument? Is it fc/fs/2 or fc/fs? fc is cut off frequ...

3 Monate vor | 1 Antwort | 0

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How to design a low pass filter with rectangular window?
Hello all, Here, I have a lowpass filter with butter 15Hz cutoff freqeuncy. But I am looking for a low pass filter using rectan...

3 Monate vor | 1 Antwort | 0

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How to remove the ripple or artifacts caused by lowpass filter?
Hi, I am in a complex situation, where the lowpass fitering with sharp cutoff freqeuncy is affecting a technique I was developin...

3 Monate vor | 2 Antworten | 0

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How to understand the design of lowpass butter filter?
Hi, I am designing a low pass butter filter with very small cut-off freqeuncy. But I see very wierd results which I could not un...

3 Monate vor | 1 Antwort | 0

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How to eliminate for loop and perform the computation parallely?
Hi, I am looking a way to reduce the time for computation of the problem of this size. This code is a larger part of a big code ...

6 Monate vor | 1 Antwort | 0

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How to compute the double integral over dx and dy?
Hi, Can someone help me to how to code this equation in matlab? Let x and y are axis of a plane. dx and dy are increments. I ha...

6 Monate vor | 3 Antworten | 0

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How to plot index of the coordinate on plot?
x, y are coordinates and I need also the index of the coordinate. As I have 10 coordinates , I need to have the coordinate numbe...

7 Monate vor | 1 Antwort | 0

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How to change the imagesc axis?
I have he following code which displays imagesc axis with the length of the samples. But I want the x axis to be dispyed w.r.t t...

7 Monate vor | 2 Antworten | 0

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Are there any matrix balancing/scaling function in matab for complex rectagular matrices?
I have a complex number matrix with 45 x 2 size. And it needs to be inverted. But the condition number is too large around 8000....

7 Monate vor | 3 Antworten | 0

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How to check the proportionaly of columns of a complex rectagular matrix?
I have a complex matrix G of size 45 x 2, where in magitude wise the 2nd column is very small than 1st. Here in the code column...

7 Monate vor | 2 Antworten | 0

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How to perform derivative of a random signal without finite difference schemes?
I have a random signal measured through experiments. When I perform derivative of signal using diff or gredient, these functions...

7 Monate vor | 3 Antworten | 0

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How to generate a set of gaussian noise signal with zero mean and say 'x' variance and measure their covariance?
I am looking to generate 3 white gaussian signals with 0 mean and 0.25 and compute the covariance matrix of them. Could someone ...

8 Monate vor | 1 Antwort | 0

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How to access the values of sym?
I am trying to solve an inequlaity using feval and the function return the limits in variable sym. May I know how to access the ...

9 Monate vor | 1 Antwort | 0

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How can I find the filter bandwidth of Savitzky-Golay filtering?
The matlab function sgolayfilt(x,order,framelength) takes polynomial order and framelength as input arguments. As savitzky acts ...

9 Monate vor | 3 Antworten | 1

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How to perform inverse between a page of a 3D matrix and a column vector without loops?
The matrix H looks like 9 x 2 x 14 and matrix A1 is 9 x1. I need to perform inversion between every page of H with A using mldiv...

9 Monate vor | 2 Antworten | 0

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How to define a criteria for output arguments of a function?
Consider a sample code schematic as shown below: The following function has 2 options, 1st option will deliver 2 output argurmen...

9 Monate vor | 1 Antwort | 0

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How to simplify the for loop for 3D matrix?
I have the following code, where I am looking to eliminate only the outer for-loop (k) and include 'k' inside the inner loop. ...

9 Monate vor | 1 Antwort | 0

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How to write a matlab code to perform moving compuation for any equation?
Lets say I have a vector of 1000 random numbers and want to sum every 30 numbers of the vector and store it in a variable.

9 Monate vor | 1 Antwort | 0

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Value of cross correlation in matlab?
The cross correlation function xcorr in matlab provides the lag between two signals. But, Is there any matlab function that calc...

9 Monate vor | 1 Antwort | 0

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Is there any matlab function to calculate moving mean square error?
I am looking for a way to calculate mean square error for every 'n' sample in a signal of length N (total number of samples)

10 Monate vor | 2 Antworten | 0

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How to calculate a running value of a function for every 30 samples?
clear all; clc; Nt= 2000; % Total samples d = randn(1,Nt); ratioCompute = sum(d)/mean(d); I need calculate this ratioCo...

10 Monate vor | 1 Antwort | 0

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