Research Assistant.

Department of Electrical and Computer Engineering

University of Virginia

Question

How to have a stack plot with different colors?

I have the following stacked plot that I want to change the color of but I am unable to do so. Thanks in advance.

2 månader ago | 1 answer | 0

Question

Reading the numeric columns from a mixed data type file

I have a file (attached below) output.mat I am trying to read the data but everytime I need to manually copy/edit and paste in ...

3 månader ago | 1 answer | 0

Question

Copy and paste current MATLAB code in another folder

I want to make a copy of my current code in execution and paste it into a folder I specify. But I am not sure how to do that. Th...

3 månader ago | 1 answer | 0

Question

How to modify few numbers in a random text file?

I am uploading a text file related to a model in an electronic simulator. How to modify the 4 parameters named with toxe = %1....

3 månader ago | 1 answer | 0

Question

How is pspectrum() different from FFT() magnitude plotted in dB?

I am having difficulty in finding a high-resolution frequency spectrum even though I have a pretty large number of time domain d...

5 månader ago | 1 answer | 0

Question

High resolution FFT from time domain data.

I have a very large time domain data with a lot of samples, but still I am not getting a good resolution in the FFT spectrum. Is...

5 månader ago | 1 answer | 0

Question

Find peaks/valleys of a noisy signal

I have this signal which is noisy as well as it has too much data samples. When I try to find the peaks or valleys, it gives mul...

5 månader ago | 2 answers | 0

Question

How to find the delta cycles (change in the number of cycles) in two sine signals with nearly identical frequencies?

I have these two signals generated from the following code; clc clear all close all %% f = 4000; t = 0:1e-5:50e-3; sig...

5 månader ago | 2 answers | 0

Question

Finding first 5 maxima and its consecutive minima.

I have the signal in the plot which is zoomed in a time window to show the peaks. I want to find not only the maxima (I did th...

6 månader ago | 1 answer | 0

Question

Create a binary matrix for more than 50 variables

I am not able to get the ouput for: dec2bin(0:1:2^no_of_variables-1) where 2^no_of_variables = 50 or more. This is because ...

6 månader ago | 1 answer | 0

Question

How to make stack plot with y axis consisting of multiple plots?

I make the plots by the following code using subplots subplot(2,1,1) for i=2:size(data,1) plot_fig(i) = plot(data(1,:...

6 månader ago | 1 answer | 0

Question

Can we save the table as delimited txt in a proper manner?

I am using the following command. writetable(T,'myData.txt','Delimiter',' ') However, the table doesn't get stored as nicely...

6 månader ago | 0 answers | 0

Question

Dynamic variable names for MATLAB table

I am making the header names of the table as following: colnames = [arrayfun(@(x) sprintf('type%d', x), 1:size(all_sorted), 'Un...

6 månader ago | 1 answer | 0

Question

How to take logical or of all the elements in the vector without a loop?

I am trying to use or(a(1,1):a(1,size(a,2))) but it doesn't run for more than 2 elements. also when I run or(1,1,0,0.1,0,...

6 månader ago | 2 answers | 0

Question

Converting a variable sized cell array to a matrix

I have a cell as below: 5 -3 11 2 3 7 -9 7 -1 3 2 4 -4 ...

6 månader ago | 1 answer | 0

Question

How to position the legend such that it is not over the plots and also how to make horizontal legends?

I am plotting mxn matrix (y-axis) with the mx1 vector (x-axis). However, the plot just looks bad for cases of more than 10 legen...

6 månader ago | 1 answer | 0

Question

How to construct and evaluate a boolean expression using symbols?

If I have a boolean expression that is y = (x1bar∨x2)(x3bar∨x4bar)(x3bar∨x5) I am currently using a simple 1 and 0 matrix to ...

6 månader ago | 1 answer | 0

Question

Can I make the matrix of size n with only x elements known and rest all 0?

I have a matrix that can have some x known values. But I want to make it of fixed length n. In other words, I want to append 0s ...

6 månader ago | 2 answers | 0

Question

Is there a matrix which can be alphanumeric?

I am trying to make a matrix like 1n -1 1n 2 1n 1 1n 3 The first column is going to be concaten...

6 månader ago | 1 answer | 0

Question

Is it possible to read a file line by line and then break each line into individual characters/numbers for further processing?

If I have a file with the folliwing contents: a file.dat a n pqr 3 2 1 -3 0 2 3 -1 0 Then is it possible to extract the nu...

6 månader ago | 1 answer | 0

Question

MATLAB not using the RAM entirely. Is it because I have an academic license?

I have a big workstation with 256 GB RAM and 32 cores. The intention to buy this was to speed up the simulations. But, I just fi...

7 månader ago | 1 answer | 0

Question

How to construct a large graph (~1e5) that has max, min, and avg degree using the logical sparse adj matrix that computes faster. Also, how to ensure that the graph is not broken (there are no subsets of disconnected graphs in the main graph)?

I have the following code for generating a small (~1e3) graph that I can control the degree of (code 1). This has n (number of n...

7 månader ago | 0 answers | 1

Question

Generate a 100000x100000 matrix that takes less time and memory

I have written a random matrix generator code that generates an adjacency matrix of any size. I am targetting larger size like 1...

7 månader ago | 3 answers | 0

Question

how to find fwhm using fwhm()?

I have a time domain data and also a FFT of this data. But when I use fwhm(x,y) then it says Pulse Polarity = Positive Pulse ...

7 månader ago | 1 answer | 0

Question

dBc/Hz phase noise undefined function error?

I am trying to use phaseNoiseMeasure (https://www.mathworks.com/help/msblks/ref/phasenoisemeasure.html) function to find dBc/Hz...

7 månader ago | 1 answer | 0

Question

How to display the filename correctly?

I am trying to export a figure with a file name that is derived from the string name after a section of a code. Below is the exp...

7 månader ago | 1 answer | 0

Question

How to maintain uniformity in the xtick and ytick labels? Also, how to adjust the legend position in a non-interactive setup.

I have the below plot and I want to do the following changes. 1) If you see the horizontal spacing between tick and the plot i...

7 månader ago | 1 answer | 0

Answered

How to plot the figure as equivalent to figure Picture1 below?

I got the solution. It is quite simple. I used export_fig function of MATLAB https://www.mathworks.com/matlabcentral/fileexchang...

How to plot the figure as equivalent to figure Picture1 below?

I got the solution. It is quite simple. I used export_fig function of MATLAB https://www.mathworks.com/matlabcentral/fileexchang...

7 månader ago | 0

| accepted

Question

How to plot the figure as equivalent to figure Picture1 below?

I have a plotted figure in software called Origin. I used to use the EMF figures from Origin and import them into the PowerPoint...

7 månader ago | 1 answer | 0

Answered

Problem Add-Ons Matlab 2016b

Please try to run the following in the MATLAB Command Window: >> opengl software And then try opening the Add on explorer aga...

Problem Add-Ons Matlab 2016b

Please try to run the following in the MATLAB Command Window: >> opengl software And then try opening the Add on explorer aga...

8 månader ago | 0