# KSSV

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

Professional Interests: Mathematical Computing

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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...

10 hours 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

2 days 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

2 days 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...

2 days 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 ; ...

2 days 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)...

2 days 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)

3 days ago | 0

How to plot velocity profile?

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

3 days 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 ...

3 days 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_...

3 days ago | 1

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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;

3 days 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...

3 days ago | 0

How to solve many equations at once? (Not a system but just multiple separate equations)

You get the solution for x in terms of Pm first. This will be a symolic xpression. In that you can substiture your Pm values to ...

3 days ago | 0

Histogram fit with curved fitting

You are expecting like this? v = randn(1000,1) ; h = histogram(v) ; i = h.BinEdges ; x = mean([i(1:end-1)' i(2:end)'],...

3 days ago | 0

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Putting array in function to graph

x = 0 : 0.1 : 2; y = 0.7*(x.^2).*(1+0.2*(x.^2)).^-3.5 ; figure(1) plot(x,y) grid

3 days ago | 0

Extracting rows in row-wise manner. How to do this?

Question sounds very silly. You can use a lloop. A = rand(100,4) ; B = zeros(100,4) ; for i = 1:100 thisrow = A(i,:) ...

3 days ago | 0

How to generate multiple .stl files in a loop?

You are overwriitng the stl files. Always you are using the same name to .stl file. You need to give different filename; check t...

3 days ago | 0

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How can I sort data from an excel file and assign ID's to binary classes?

You need not to use a loop. You can go by inequalities, where you will get logical indices as output. The logical indices have 1...

3 days ago | 0

How do I fit a surface to this data properly?

Read this: https://in.mathworks.com/help/curvefit/fit.html

3 days ago | 0

How to merge two tables, keeping independent variable (x) the same but summing the dependent variable (y)

T1 = readtable('Confoss_landings.xls') ; T2 = readtable('Mainefoss_landings.xls') ; [idx,ia] = ismember(T2.(1),T1.(1)) ; ...

4 days ago | 0

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How to generate a rhythm in Matlab?

n = 2 ; % number of 0's l = 4 ; % length of array m = l-n ; % number of 1's iwant = [repelem(0,n) repelem(1,m)] ; % ra...

4 days ago | 1

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Make 3d sphere plot from net of sphere

clc; clear all ; I = imread('cameraman.tif') ; [m,n] = size(I) ; [X,Y,Z] = sphere(m-1,n-1) ; surf(X,Y,Z,flipud(I),'...

4 days ago | 0

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how to draw a number of circle inside large circle having same origin but different radius

r = linspace(0,1,10)' ; % Radii th = linspace(0,2*pi) ; C = [0 0] ; % Center x = cos(th) ; y = sin(th) ; X = C(1)...

4 days ago | 1

How to create a new matrix with a for loop?

You should not create individual arrays like that. You should proceed something like this iwant = zeros(3,100) ; iwant(i,:) =...

4 days ago | 0

find a value between two points

Read about interp1. If you have curve data as (x,y), at the point xi you can seek the value using: yi = interp1(x,y,xi)

4 days ago | 0

Projecting a point along normal direction

You may use this file exchange function: https://in.mathworks.com/matlabcentral/fileexchange/32696-2d-line-curvature-and-normals...

4 days ago | 0

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Correctly plot the quiver on a figure

Try changing (x,y) i.e. use (y,x) instead.

4 days ago | 0

Sort a Matrix by the first column connecting the row elements so that the elements of the second column 'follow' those of the first.

A = rand(10,2) ; [val,idx] = sort(A(:,1)) ; iwant = A(idx,:)

5 days ago | 0

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