# Sulaymon Eshkabilov

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

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**Content Feed**

How can I split an array?

Vw1=Vw(:,1); Vw2=Vw(:,2); Vw3=Vw(:,3); Vw4=Vw(:,4);

1 day ago | 0

How can I delete data from a variable in a table?

In fact, it is not viable to delete only rows as dpb stated. Otherwise, if you'd like to remove all elements of specific rows,...

1 day ago | 0

Matlab function can't reach 2nd element of the input.

In your simulink model, a mutiplication block (?) has to have matrix multiplication operation. The elementwise multiplication is...

1 day ago | 0

How can i plot hyperspectral image data with kmeans?

Remove in your code line 1 and last one, e.g.: clear; data = multibandread('D:\Project\20201027_210119\cube_envi32.dat...

1 day ago | 0

| accepted

How to retrieve location values in a matrix

% e.g.: A = randi([0, 13], 4,6) A(3,1), A(4, 2), A(1,3)

1 day ago | 0

how can i solve integral equation ,symbolically methode by using a matlab

You can start by initiating the variables via syms, e.g.: syms t x y = expression1; f = expression2; Sol = solve(y+integral(...

9 days ago | 0

Fmincon solution is same as initial guess

THere are a couple of errs oin your fcn, i.e. y0, a,b,c,d not defined. Moreover, x is not defined. function J=cost_function(y0,...

11 days ago | 0

| accepted

Compare 2 string documents

The err is here: if AIS1 == AIS2 % ERR % Corrected one: if AIS1(i) == AIS2(i) Note that sizes of AIS1 and A...

11 days ago | 1

how many times is a value repeated in a table

N20=sum(tab.prob(:,1)==20); % Times of 20s N50=sum(tab.prob(:,1)==50); % Times of 50s N100=sum(tab.prob(:,1)==100); % Times of...

11 days ago | 0

| accepted

I coded this and it types me error

The loop operation canNOT be assigned twice in one for. Your code has to be in this format: for i=1:N % You can skip ste...

11 days ago | 1

| accepted

code for model online

Run this in your MATLAB command window: >> sm_cable_elevator Also, you can get it with: >> open sm_cable_elevator

11 days ago | 0

How to add error bars to a timeseries plot using datetime values

Maybe you should try to employ datenum(), e.g.: x= datenum(ts1); % See help doc how to get datenum() errorbar(x,y...

11 days ago | 0

How can i optimize the code and connect the functions?

One quick and easy suggestion is to employ readtable() instead of xlsread().

11 days ago | 0

how to add zero padding to text file to make 250x4

X = load("Test0.txt"); % Original data file x1 = zeros(250,4); % Zeros 250-by-4 XX = [x1;X]; % All d...

11 days ago | 0

Convert older simulink model to newer version

Open the original model in Simulink 2019b and save it as 2019b model (*.slx or *.mdl).

11 days ago | 0

Solved

Make a list string

Given a cell string, produce a string separating the items with spaces and commas and with an 'and' preceding the final item, an...

11 days ago

HAVING TROUBLE WITH PLOTTTING

% Here is a slightly edited/fixed version that works ok. while(1) [val,Principal,Number,Interest] = inputvalues; if(...

11 days ago | 0

how do I find where a function is defined (equivalent of "which" command in bash)

which count

11 days ago | 1

Save number of iterations in a for loop

An easy solution is: n=10; for i=1:n tspan=[0 max(EXP.t)]; MAT=[SYSTEM.m_BW(i) SYSTEM.w_L(i) SYSTEM.w_K(i) SYSTEM...

11 days ago | 0

| accepted

How can i take multiple images from a folder (which is almost 800!) and perform specific operation?

You'd need to employ for or while loop with the following loop structure: M_FOLDER = '???\MATLAB'; % Directory where all image ...

11 days ago | 1

Plotting points on a graph every 15 minutes

You had better use timer class: https://www.mathworks.com/help/matlab/ref/timer-class.html

11 days ago | 0

how can i plot the amplitude spectrum of these signals

Fs = ... % Sampling freq t = ... % Time F = 0.25+cos(2*pi*50*t); L = length(F); N = 2^nextpow2(L); Y = f...

13 days ago | 0

When creating a table, how do I specify the dimensions of a particular variable?

It is better to create a zero matrix and then assign a table variable, e.g.: Nrows=10; Ncols=8; A = zeros(10, 8); my_table ...

13 days ago | 0

how to calculate mean square error ?

You have already computed in the last line of the code. Maybe you meant root mean square error. If so, MSE = mean(fit_err.^2); ...

14 days ago | 0

Creating a simulink model to analyse the harmonics on the substation

You can model your exercise simulation model in combination MATLAB+Simulink. Simulink modelling is strainghtfoward. If you don't...

14 days ago | 1

Solved

ABBREVIATION

Abbreviate the given string. Consider Only Capital Letters. EXAMPLE If input is 'Abbreviation of The Given String' then ou...

14 days ago

How to display subplot with multiple image with its own x and y axes ?

subplot(2,2,1); imshow(Newforegnd); % Use this command axis on ...

14 days ago | 1

Trial and error help needed

You can start by studying how to employ some MATLAB's built in fcns, such as, hexToBinaryVector()

14 days ago | 0

How to plot the fft if we are having the data ?

Hi, Here is a correct and complete code for fft calc and plot with your data given in .xls data file: clearvars; clf; D=rea...

14 days ago | 0

Lowest value of n for a fibonacci series

f(1)=a; f(2)=b; k=2; while f(k)<1e5 f(k+1)=f(k-1)+f(k); k=k+1; end fprintf('The final value is %d \n', f(end))

14 days ago | 0