# KSSV

https://sites.google.com/site/kolukulasivasrinivas/

Professional Interests: Mathematical Computing

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extract data in specific interval

Let thedates be your datetime array. [y,m,d,h,m,s] = datevec(thedates) ; iwant = thedates(y==2020) You can also use inequal...

ongeveer 2 uur ago | 0

I have a 2 dimensional array. I want to view it.

x = trajectories(:,1) ; y = trajectories(:,2) ; plot(x,y)

ongeveer 3 uur ago | 0

I need help about the imbalanced data

Read about readtable. After reading you can access the rspective columns using T.T1, T.T2 etc... or T.(1), T.(2) etc. T = re...

ongeveer 4 uur ago | 0

| accepted

how to read images from subfolder of a data base and train svm cllasification

https://in.mathworks.com/matlabcentral/answers/437494-how-to-loop-through-all-files-in-subfolders-in-a-main-folder https://in....

ongeveer 4 uur ago | 0

Unable to perform assignment because the indices on the left side are not compatible with the size of the right side.

emat = cell([],1) ; % INPUT OF INITIAL MATERIAL DISTRIBUTION % ONLY in 1st ITERATION if (a==1) fid = fopen(...

ongeveer 4 uur ago | 0

| accepted

Create a 95% confidence circle

Yes you can use... the change would be a == b i.e. horizontal and vertical radii should be same.

ongeveer 7 uur ago | 0

How to show difference equation on the command line?

fprintf('y(n) = 0.25\n') fprintf('y(n-2) = 2*x(n)+0.5*x(n-2)\n')

ongeveer 9 uur ago | 0

How to read the variables from a file

https://in.mathworks.com/matlabcentral/answers/251731-how-to-take-text-files-and-turn-the-data-into-variables

ongeveer 9 uur ago | 0

How do I enter f(x) = sin((π/2) x) + sin((2/5)πx) over the interval [0,40]

x = linspace(0,40,100) ; f = sin(pi/2*x)+sin(2/5*pi*x) ; plot(x,f)

ongeveer 10 uur ago | 0

How to combine 2 tables with different variables into 1 table?

Convert both the tables into arrays using table2array. And then you need to use below: T1 = [1 2 3 4 5; 10 20 30 40 50]' ; T2 ...

ongeveer 10 uur ago | 0

| accepted

How to plot a graph?

You can striaght away use plot on 50*6 matrix. plot(A) ; % A is 50*6 matrix legend

1 dag ago | 0

Finding 8 points on an ellipse

Find the major, minor axes of ellipse i.e. (a,b). Once these are known, the paraetric equation of ellipse are: Take phi = 0:p...

1 dag ago | 1

i have an error using plot function with syms engine

You need to substitue the value of a into K1 using the function subs, convers the output into double and then plot. y = double...

1 dag ago | 0

finding indices of values in a range

To achieve the first task, you can use inqualities i.e. >, <. = etc. To achieve the second task use ismember.

1 dag ago | 0

matrix1:matrix2 ?

It means : a=[1 2 3; 4 5 6] ; b=[1 2; 3 4 ; 5 6] ; a(1):b(1) i.e. it is taking a(1,1) and b(1,1) and trying to make a linsp...

1 dag ago | 0

| accepted

How to convert logarithmic to linear

Take exp of the result. The inverse of log is exp,

1 dag ago | 0

how to evaluate equation at different values?

mu=linspace(2.4,4,1000); x = zeros(size(mu)) ; x(1)=.5; for i=1:10 x(i+1)=mu(i)*x(i)*(1-x(i)); end plot(mu,x)

1 dag ago | 0

Save a loop iteration into a ZEROS array

Note that Array is not all zeros. It has complex numbers, so when you are printing you feel like they are zeros. Also you need n...

2 dagen ago | 0

How to get the file names that start with the same letter in the folder?

f = dir('T*.bin') ; N = length(f) ; for i = 1:N f(i).name end

4 dagen ago | 0

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Create a function based on some criteria

if x <= 0 y = -1 ; elseif x > 0 && x <= 5 y = x^3 ; elseif x > 5 y = x^2 ; end

4 dagen ago | 0

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How to save output of double loop?

A = zeros(n,m) ; for i=1:n for j=1:m A=myfunction(...); % assuming output of the function is 1x1 end e...

4 dagen ago | 1

How can I detect constant signal patch from whole signal by using matlab script ?

x = 0:0.1:10; y = gaussmf(x,[2 5]); % Introduce constant value [val,idx] = max(y) ; idx0 = idx:idx+10 ; y(idx0) = val ; ...

4 dagen ago | 0

How to plot 2D Linear Inequality?

[x1,x2]=meshgrid(0:.1:10,0:.1:10); cond1=x1-x2<=-2; cond2=-0.3*x1-x2<=-8; cost=0.4*x1.^2-5*x1+x2.^2-6*x2+50; figure (1)...

4 dagen ago | 0

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Function readtable: how to insert the value of a variable double in the directory

f = dir('C:\Users\hp\OneDrive\Project\Results\'); f(3) f(4)

5 dagen ago | 0

How to plot velocity profile?

T = readtable('Atq16.xlsx') ; data = table2array(T) ; plot(data(:,2:end),data(:,1),'-or')

5 dagen ago | 0

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Reading .rec files ( mutiple .rec files)

For .edf files you can use this file exchange function: https://in.mathworks.com/matlabcentral/fileexchange/31900-edfread For ...

5 dagen ago | 0

How to find uaci by fixing one image and changing the other?

A = imread('whatever_is_A') ; B_images = dir('*.png') ; % you are in the folder of images and give extension N = length(B_...

5 dagen ago | 1

| accepted

I want to cut a vector into even number of terms in a loop

save_T = 35; if mod(save_T,2)==0 % is even continue else save_T=save_T-1;

5 dagen ago | 0

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Need help in plotting contour of speed, torque and eff

scatter(eff,speed,[],torque,'filled') You cannot plot contour with the given data. You have 1D data. You need to have 2D data...

5 dagen ago | 0