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# KSSV

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6,513 total contributions since 2011

https://sites.google.com/site/kolukulasivasrinivas/
Professional Interests: Mathematical Computing

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Answered
How do I receive the touching points of a circle with given radius inside a curve?
Use this: https://in.mathworks.com/matlabcentral/fileexchange/22441-curve-intersections?focused=5165138&tab=function Also y...

9 hours ago | 0

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define x and y for interpolation of scattered data
Let A be the matrix, which is of size m*n x = 1:n ; y = 1:m ; [X,Y] = meshgrid(x,y) ; xq = 1:0.5:n ; yq = 1:0.5:m ; ...

13 hours ago | 0

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How can I save data in a multidimensional array
As you have Table T in your hand. You have what you want in hand already. You can access your required array suing. T.Vego ...

13 hours ago | 0

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using a vector to represent three coefficients.
function [quadRoots,disc] = Q1_19000046(coeff) %[quadRoots,disc] = Q1_19000046(coeff); %Compute quadRoots and disc of quadrati...

13 hours ago | 0

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Answered
Getting the max value of a certain column, fetching the entire row from a 3D matrix and write those in a new matrix
A = rand(68,8,30) ; % randmom data for demo col = 3 ; % third column from which max to be seeked [m,n,p] =size(A) ; ...

13 hours ago | 0

Answered
How to smooth out a surf plot
surf(z_vec, v2in_vec, all_v2.') Increase the dimensions of z_vec and v2in_vec. Make the difference/ step size small to increase...

14 hours ago | 0

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Classification learner app input issue
Two options: Merge all the csv files into single csv file and load the data through csv file. Load each file data into works...

14 hours ago | 0

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How to make visualization of multi-vehicle motion?
Use interpolation and get all the vehicles to the same time vector. Read about interp1. When you do this, your position of each ...

3 days ago | 0

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How to sum columns of a matrix in MATLAB in specified number of columns?
A = rand(2500,500) ; B = reshape(A,2500,10,[]) ; iwant = squeeze(B,2) ;

3 days ago | 0

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How to make every element in the form of isoparametric, Lagrangian quadratic element?
nodes = [nodes(:,1) nodes(:,5) nodes(:,2) nodes(:,6) nodes(:,3) nodes(:,7) nodes(:,4) nodes(:,8) nodes(:,9)] ;

3 days ago | 0

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Obtaining the pixel values within an ROI
As you have the coordinates for the boundary, use inpolygon and get the locations of the points lying inside the clsoed region.....

3 days ago | 0

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contour plot for 3d data with x, y, z and c in matlab
Read abouit contour3, slice.

4 days ago | 0

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How to use a shapefile to extract regions outside the shapefile?
Read the shape file using shaperead. This has single/ multiple regions. Pick one closed region fromt he shape file Take the ...

10 days ago | 0

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Choose n points randomly from a circle, how to calculate the probability that all the points are in one semicircle?
% Generate circle r = 1. ; % radius th = linspace(0,2*pi) ; x = r*cos(th) ; y = r*sin(th) ; % Geenrate random points...

10 days ago | 0

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Plot 4000x500 2D matrix
Read about surf, pcolor, imshow, imagesc.

10 days ago | 0

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Generate (X,Y) grid coordinates from within contour boundary
Use boundary to get the boundary of your required region. Use inpolygon with the generated grid and boundary points to get the...

10 days ago | 0

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Answered
I want to read image name to be an string
imgNames = dir('*.jpg') ; N = length(imgNames) ; for i = 1:N img = imgNames(i).name end

12 days ago | 0

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How to draw three graphs together to make a composite figure
C = [0 0 ; 1 0 ; 1 1 ; 0 1 ; 0 0 ] ; A = [0 1 ; 0 1.25 ; 1 1.25 ; 1 1 ; 0 1] ; B = [1 0 ; 1 1 ; 1.25 1 ; 1.25 0 ; 1 0] ; ...

13 days ago | 1

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Answered
Converting output from 'find' into a logical
Read about ind2vec. By the way you can straightaway logical, there is no need to use find.

13 days ago | 0

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Find the surface area of an object using stereo vision.
After using delaunayTriangulation, you have vertices and nodal connectivity in hand. Then you can use this function to get the a...

13 days ago | 0

Answered
Is there a way to come up with all the combination between 0 and 1 that sum up to equal 1?
x = 0:1/100:1 ; id = nchoosek(1:length(x),4) ; thesum = sum(x(id),2) ; % find sum == 1 idx = thesum==1 ; iwant = x(id...

14 days ago | 1

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Damping ratio computing from a MATLAB plot
For natural frequency you need to look into fft. Damping ratio can be calculated using logarithamic decrement approach. https:...

14 days ago | 0

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How to extract data from a cell array?
Already you have the cells in your desired way. You can access them using C{1} , C{2}, C{3} . You need to store them again...

14 days ago | 0

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How to plot data T(3023x1 table) and I(3023x1 table)?
plot(t.1,i.1)

14 days ago | 0

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How do I restrict a decimal number to 2 significant decimal places?
Refer for the same discussion: https://in.mathworks.com/matlabcentral/answers/79928-reduce-precision-of-a-number

14 days ago | 0

Answered
how to divide a region into elements where each element is 9 node element in matlab?
You can extend the following to your needs. https://in.mathworks.com/matlabcentral/fileexchange/33731-meshing-a-plate-using-...

14 days ago | 0

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Answered
interpolation with non-zero data only when using griddata
Get the boundary of your required region use inpolygon to get the points lying inside and outside the boundary Make the data f...

15 days ago | 0

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how to solve the nonlinear equatios?
Try this. syms v T p=30;d=1;lamda=0.8;c=10;r=35;h=0.05;chi=200;k=0.02;b=7;a =0.01; w = k*(1-exp(-a*chi)); M=k*a; equation1...

18 days ago | 0

Answered
length and width of room is increased by 20 percentage.what percentage has the area increased by
Let l, b be your old length and breadths. l1, b1 be new lengths and breadths l1 = 120/100*l ; b1 = 120/200*b ; A1 = l1*b1...

18 days ago | 0

Answered
help!!! with plot
a=200;b=5;cm=10;cr=3;v=600;k=6;u=0.1;s=0.2;e=2;cp=2;t=1; pr=1:10; r=-(pr*u*(b*cm - a + cp*e*k + b*cp*e*t))./(8*v + 2*b*pr.^2*u...

28 days ago | 0

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