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KSSV


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6,253 total contributions since 2011

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

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Answered
How to apply the laplacian filter on a color image in Matlab?
https://in.mathworks.com/help/images/ref/locallapfilt.html

3 days ago | 0

| accepted

Answered
How can I compute spectrogram for data vector containing NaN values?
Multiple options: Discard NaN's Fill the NaN's using interpolation (interp1, spline) Fill the NaN's using fillmissing Fill t...

3 days ago | 0

Answered
How to measure the similarity between two signal?
Read about xcorr

3 days ago | 0

Answered
How to select points on a scattered plot with mouse?
Read about ginput

3 days ago | 0

| accepted

Answered
Linear indices from row and column indices for a rectangular region of interest.
YOu need to consider the size of matrix a. %this works a = rand(5,5); row_indices = 1:5; col_indices = 1:5; [X,Y] = meshgr...

3 days ago | 0

Answered
how to plot random points in airfoil wing
Check this demo example. I have coded it keeping in mind how your data is. It is like you are provided with upper and lower curv...

3 days ago | 0

Answered
3d plot help
data=[1,1,1 ; 2,2,2 ; 3,3,3; 4,4,4] x=data(:,1); y=data(:,2); z=data(:,3); figure scatter3(x,y,z,100,z,'filled')

3 days ago | 0

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Answered
filter a matix column values
Let X,Y,D,V be your (x,y) locations, distance and velocity respectively. figure hold on plot(X,Y,'r') plot(X(D>1.5),Y(D>1...

4 days ago | 1

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Answered
Select 100 points either side from mouse click cooradinates
x = linspace(0,1) ; y = sqrt(x) ; % Mid point M = [mean(x) mean(y)] ; % points left side idx1 = x<M(1) ; % % points...

4 days ago | 0

Answered
find missing points on a graph
a=[1,3,4,6,7,9] b=[2,12,24,32,41,49] plot(a,b,'r-') hold on plot(a,b,'ko','LineWidth',2,'DisplayName','KnownCorrespondence')...

4 days ago | 0

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Answered
How to eliminate certain columns from a matrix
Let A be matrix A(:,1:2:end) = [] % remove odd columns A(:,3) = [] % remove third column idx = [1 2 5 7] ; A(:,i...

4 days ago | 1

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Answered
Matlab coding and workspace
A = zeros(100,1) ; % initilaize for i = 1:100 A(i) = rand ; % update the value in loop end

4 days ago | 0

Answered
How can I draw separating lines between colors in a 3D volume plot?
Remove the shading interp line after plotting. LV_S3_LAT; %load the data V = Vertices(:,2:4); T = Triangles(:,2:4)+1; sV ...

4 days ago | 0

Answered
How to remove small connected parts in the image without smoothing the others?
Read the image Get the locations of black pixels Fit the ellipse for the data Plot the ellipse on the image Use inpolygon a...

4 days ago | 0

Answered
RGB map into numerical data
I = imread('IMG_2830.jpeg') ; I1 = imcrop(I) ; % Exactly crop the required borders/ exclude axis [nx,ny] = size(I1) ; x ...

4 days ago | 0

Answered
How to use result in each iteration in a for loop and then use it in next loop?
for i = 1:10 a = rand+rand ; % this is the result in first loop for j = 1:3 b = a+rand ; % result of first...

5 days ago | 0

Answered
Filling in matrix for strain map
Read about fillgaps and fillmissing

5 days ago | 0

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Answered
Surface Plot Excel Data
num = xlsread(myfile) ; x = num(:,1) ; y = num(1,:) ; Z = num(2:end,2:end) ; surf(x,y,Z) % if throws error trnspose Z

5 days ago | 0

Answered
How to check a triangle surface mesh is closed?
Just a wild guess.......give a try and let me know. Find the mean of the points and check whether this mean lies inside or outsi...

6 days ago | 0

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Answered
Display radius on the plot
YOu can display radius of the circle like below: th = linspace(0,2*pi) ; R = 1. ; % REadius of Circle C = [0. 0.] ; ...

6 days ago | 0

Answered
Create data set according to a plot ?
t = [0 10 15 30 40 50 60] ; vel = [20 20 30 30 10 5 5] ; plot(t,vel) ylim([0 35])

7 days ago | 0

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Answered
How to plot two columns when another column has a specified value
idx1 = contains(type,'dipslip') ; idx2 = contains(type,'strikeslip') ; figure hold on plot(moment(idx1),Area(idx1),'Or') pl...

7 days ago | 0

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Answered
Ctrl+Enter running the entire program
YOu should use %% this at the start and at the end to run a section.

7 days ago | 0

Answered
Use for loop in array
a = rand(10,1) ; for i = 1:length(a) a(i) end

7 days ago | 0

Answered
How to find the Statistical Properties(Mean, Standard Deviation, Skwness and Kurtosis) of image?
Mean: https://in.mathworks.com/help/images/ref/mean2.html std: https://in.mathworks.com/help/images/ref/std2.html skew...

7 days ago | 0

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Answered
Finding the tangent line of an ellipse
https://in.mathworks.com/matlabcentral/answers/89306-tangent-line-to-a-curve-at-a-given-point

7 days ago | 0

Answered
Function ontput missed or not assigned
function [y1 y2]=xxx(u) if u<10 y1=1 ; y2= [] ; else y1 = [] ; y2=1 ; end end

7 days ago | 0

Answered
using for loop in alignsignal function
[m,n] = size(X) ; Xa = zeros([],m) ; Ya = zeros([],n) ; for i = 1:n [xa,ya] = alignsignals(X(:,i),Y(:,i)) ; Xa(:...

7 days ago | 0

Answered
Triangulation within specified region
Read about delaunayTriangulation , you can provide edge constraints. On providing these constraints; you can avoid such triangle...

10 days ago | 1

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Answered
How to read a .txt file and convert to an image in MATLAB?
A = load('USER-1-1-1.txt') ; imagesc(A)

10 days ago | 0

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