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# Sulaymon Eshkabilov

##### Last seen: Today
473 total contributions since 2019

research interests: vibrations, optimal control, system modeling and simulation, mechatronics... coding

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I want to store data in a matrix from a for loop using non integer indexing
Hi, There are several ways of doing it: Most efficient way: x = [5:0.1:20]; v = (1:.1:10)'; MAT=v.*x; 2. Least efficie...

3 hours ago | 0

Make a point move straight up and down
Hi, If I've understood your question correctly, you'd like to get a up and down motion of a point x, y(i). Then here is one o...

3 hours ago | 0

Make a point move straight up and down
Hi, A simple motion or animation tool with plot tools is drawnow that can be employed in your task, e.g.: https://www.math...

4 hours ago | 0

How to create a movie from different .fig files ?
Hi, One of the easy matlab fcns to build movies from plot figures is getframe() along with drawnow. See the help doc: https:...

4 hours ago | 0

How can one put mean and std of the data into histogram using annotation?
Hi, A user can fully control the location of the legend by indicating its location as: legend({sprintf('mean = %3.2f, std = ...

4 hours ago | 0

create a vector of 0 and 1s that takes 1 at a fixed interval
Hi, O=zeros(1, 20); m=input('m = '); IN=m+1:m+1:numel(O); O(IN)=1;

17 hours ago | 0

problems using Start in Data Acquisition script
Hi Maybe you should add data rate, e.g.: D = daq("ni"); D.Rate = 5000; addinput(D, "ThunderdomeDAQ", "ai0", "Voltage"); ...

17 hours ago | 0

Hi You can try: a variable step solver: adjust absolute and realtive tolerances a fixed step solver: use a few different...

18 hours ago | 0

ASSISTANCE ON RUNNING RANDOM VARIABLES IN A FUNCTION
Hi, Here is a nice tutorial that explains everything what you need for your exercise. https://www.mathworks.com/help/matlab/...

3 days ago | 0

How do I hanning window a signal before FFT, inside of for loop?
Hi, You can insert your anticipated hanning window command on line 81 of your script, i.e., hold on; WIN_Hann=hann(length(Di...

3 days ago | 0

how to compute the complex Fourier series expansion of half-wave rectified signal. and plot its phase and amplitude spectrum?
Hi, Here are several nice tutorial examples of matlab on Fourier Transform. https://www.mathworks.com/help/matlab/math/fouri...

3 days ago | 1

Gerchberg–Saxton algorithm/ Phase Retreiveal algorithm
Here is one of the nice scripts posted on the MathWorks website: https://www.mathworks.com/matlabcentral/fileexchange/65979-gerc...

4 days ago | 0

How to apply a random Crossover (Arithmetic/Scattered/Two-point) in Genetic Algorithm using auto-generated file from Optimization Toolbox ?
See the screen shot given in the attachement. You should select from the drop-down options whichever crossover function suits fo...

4 days ago | 0

Improving fit of custom function
Hi, Why not to use cftool (Curve Fitting Toolbox). Launch it with: >> cftool Indicate your x data and y data variable na...

5 days ago | 0

C = union( A,B ) is too slow. Is there any faster way given that A and B are ordered.
Hi, This one could be faster: ismember(A, B)

6 days ago | 0

how to transfer a 3D variable into a row in an excel file?
Hi, a simple solution might be this one: for ii=1:14 % EEGData has 14 layers SH=strcat('Sheet', num2str(ii)); xls...

6 days ago | 0

what is wrong here? ??? Error using ==> times Matrix dimensions must agree.
Hi, There is two small but crucial errs - see the command below: %... Fi=fftshift(double(A)); % NOTE your assigned var...

6 days ago | 0

How can I index one array using element values from another array
Hi, Again using logical indexing might be one of the easy ways of doing it: Y_sub30 = y(z < 30); Total_sub30=sum(Y_sub30); ...

6 days ago | 1

| accepted

phase plot fft (strange)values
Hi, There was a small but crucial mistake while defining 's' signal. Here is the corrected one: s = cos(2*pi*15*t -30*pi/180...

6 days ago | 0

| accepted

Convert .mat file into .csv file
Hi, For your data, converting into xls or xlsx would be easier. If you'd need only csv, then you'd need to use the syntax as th...

6 days ago | 1

| accepted

Kindly help me to obtain the first four numerical solution of given trancedental equation "luck 1"
Use the commands: EQN = luck1==0 SOL = solve(EQN, x); SOL = double(SOL);

6 days ago | 0

How to use linear regression modeling for x-vector of dimension m and y-vector of dimension m
Hi, If your given data for x and y are 1-by-1000 or 1-by-10000000 ... . Briefly speaking your data is 1D. Then you'd need to us...

6 days ago | 0

Hi, There is an easy solution for your exercise that is to use "To Workspace" block instead of "Display" block. Then you will...

6 days ago | 0

how to zoom-out on a figure window in a script
Hi, Here are two simple ways of solving your task: 1) using zoom() function, e.g.: figure, plot(rand(10,1),'bo-') zoom(0.75)...

6 days ago | 0

Replace values in grid data (3D) to NaN, like another (3D) have NaN
It can be done very easily with a logical indexing opt: e.g.: Index = isnan(SST); VWind(Index)=NaN; Now you can compare and...

9 days ago | 0

| accepted

Transfer Function with one 1/s term
Hi, It is straightforward: T = tf([1 0 1], [1 1 1 0]); nyquist(T)

9 days ago | 0

| accepted

Tensor Product According to Input (Dynamically)
If your variable sigma_x is 90 rotated eye matrix, then you can use A = rot90(eye(d)); Good luck

1 month ago | 0

How to rename a bunch of files in a folder
Here is the answer that changes the file names to: 1a.tif, 2a.tif, 3a.tif, ..., etc. files = dir('*.tif'); for ii = 1:length(f...

2 months ago | 0