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# Kalasagarreddi Kottakota

Last seen: 1 jour il y a Actif depuis 2021

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Question

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 ...

environ 2 mois il y a | 1 réponse | 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...

2 mois il y a | 3 réponses | 0

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Question

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...

3 mois il y a | 1 réponse | 0

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Question

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...

3 mois il y a | 2 réponses | 0

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Question

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....

4 mois il y a | 3 réponses | 0

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Question

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...

4 mois il y a | 2 réponses | 0

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Question

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...

4 mois il y a | 3 réponses | 0

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Question

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 ...

4 mois il y a | 1 réponse | 0

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Question

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 ...

5 mois il y a | 1 réponse | 0

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Question

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 ...

5 mois il y a | 3 réponses | 1

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Question

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...

5 mois il y a | 2 réponses | 0

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Question

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...

5 mois il y a | 1 réponse | 0

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Question

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. ...

5 mois il y a | 1 réponse | 0

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Question

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.

5 mois il y a | 1 réponse | 0

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Question

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...

5 mois il y a | 1 réponse | 0

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Question

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)

6 mois il y a | 2 réponses | 0

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Question

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...

6 mois il y a | 1 réponse | 0

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Question

How to find coordinates of intersecting line?
Hi, I have plot which is shown below and there is black (dashed) vertical line in x axis at 3. I need to find the coordinates ...

7 mois il y a | 2 réponses | 0

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Question

How to know the passband of the savitzky golay matlab filter?
Hi, The matlab savitzky golar filter which is a low pass filter takes inputs as order and frame length. sgolayfilt(x,order,fra...

7 mois il y a | 1 réponse | 0

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Question

How to make decreasing quadratic curve?
Hi, I am looking a decreaing quadratic of red colour in the image below. But when I script, I get the curve (in blue). Can someo...

8 mois il y a | 2 réponses | 0

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Question

How to create a random and smooth varying rpm profile?
Hi, I am trying to create an rpm profile with rpm- varying between 1190 rm to 1210 rpm . Could someone help me on how to crea...

8 mois il y a | 1 réponse | 0

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Question

How to fix the precession difference error of variables in matlab?
I have 2 data sets named T and T2 as shown in the below figure with values ranging with a precession of 1e-5. The expected ma...

10 mois il y a | 2 réponses | 0

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Question

How to convert long to scientific e format in plots legend?
txt = ['lambda = ',num2str(lambda(check))]; plot(1:100, abs(Arec(:,2000)),'DisplayName',txt)% capon legend show How to change...

12 mois il y a | 1 réponse | 0

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Question

How to solve this complicated expression to get real roots?
The following is a complicated expression for which I need to find a real value for such that the expression equals to zero: ...

environ un an il y a | 1 réponse | 0

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Question

How to solve the following type of equation that includes summation in matlab?
How to find an expression for using matlab, so that the below equation equals to zero.

environ un an il y a | 1 réponse | 0

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Question

How to allign Y axis of a image with out reversing image?
The axis of the image is not alligned with the coordinate system. Could someone help in this regard? If I use set(gca,'YDir','no...

plus d'un an il y a | 1 réponse | 1

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Question

How to plot imagesc plot over .jpg image?
The result of this plot only shows image 'Top.jpg' with a colorbar, but I am looking for imagesc plot over the rgb image. figur...

plus d'un an il y a | 1 réponse | 0

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Question

How to add colormap on an image?
Add colormap on a .png/.jpeg image.

plus d'un an il y a | 2 réponses | 0

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Question

How to multiply row of matrix A with column of matrix B?
A is 121 x 36 matrix B is 36 x 121 matrix The result C should be 121 x 1 matrix. May I know how should I multiply a row of ...

plus d'un an il y a | 2 réponses | 0

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Question

How to perform pinv for each column in a complete matrix?
A=[1 5 9;2 6 10;3 7 11;4 8 12] B = pinv(A); I want to perform pinv(A) to each column. Can some help me? No loops please.

plus d'un an il y a | 1 réponse | 0

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